View MAX9977_7860850.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

general description the MAX9977 quad, low-power, high-speed, pin-elec- tronics driver includes, for each channel, a three-level pin driver. the driver features a wide voltage range and high-speed operation, includes high-impedance and active-termination (3rd-level drive) modes, and is highly linear even at low voltage swings. the MAX9977 provides high-speed, differential control inputs with internal 50 ? (100 ? lvds) termination resistors that allow compatibility with 1.8v and 3.5v terminated 0.4v p-p cml, reducing the discrete component count required on the circuit board. the MAX9977ad has no internal termination. a 3-wire, low-voltage, cmos-compatible serial interface programs the low-leakage and tri-state/terminate opera- tional configurations of the MAX9977. the MAX9977? operating range is -1.5v to +6.5v (con- sult factory for other operating ranges), and features a maximum power dissipation of only 0.8w per channel. the device is available in a 100-pin, 14mm x 14mm x 0.1mm body, and 0.5mm pitch tqfp. an exposed 8mm x 8mm die pad on the top of the package facili- tates efficient heat removal. the device is specified to operate with an internal die temperature of +60? to +100?, and features a die temperature monitor output. applications medium-performance system-on-chip ate and memory applications features low power dissipation: 0.8w/channel high speed: 1200mbps at 3v p-p and 1800mbps at 1v p-p low timing dispersion wide -1.5v to +6.5v operating range interfaces easily with most logic families active termination (3rd-level drive) internal 50 ? termination resistors on control inputs low gain and offset errors pin compatible with the max9963 and max9965 quad drivers MAX9977 quad, low-power, 1200mbps ate driver ________________________________________________________________ maxim integrated products 1 ordering information 19-0383; rev 0; 7/05 for pricing, delivery, and ordering information, please contact maxim/dallas direct! at 1-888-629-4642, or visit maxim? website at www.maxim-ic.com. * future product?ontact factory for availability. ** idp = inverted die pad. + denotes lead-free package. pin configuration and selector guide appear at end of data sheet. pa rt t em p r a ng e pin- pa ck a g e expo sed pa d va ria t io n c o de m ax9977akc cq 0 c to + 70 c 100 tqfp - idp ** c 100e - 8r m ax9977akc cq+ 0 c to + 70 c 100 tqfp - idp ** c 100e - 8r m ax9977ad c cq* 0 c to + 70 c 100 tqfp - idp ** c 100e - 8r m ax9977ad c cq+ * 0 c to + 70 c 100 tqfp - idp ** c 100e - 8r 47 ? dtv_ gs dhv_ dlv_ data_ ndata_ rcv_ nrcv_ dut_ sclk cs v cc v ee gnd tmsel din serial interface serial interface is common to all four channels. mode bits independently latched for each channel. 0 tmsel optional r data 2 x 50 ? lleak high impedance multiplexer thr v t _ _ temp one of four identical channels shown. ch_ mode bits lleak rst optional r rcv 2 x 50 ? MAX9977 buffer functional diagram free datasheet http:///
MAX9977 quad, low-power, 1200mbps ate driver 2 _______________________________________________________________________________________ absolute maximum ratings electrical characteristics (v cc = +9.75v, v ee = -4.75v, v gs = 0, v t 12 = v t 34 = 1.8v, t j = +85 c, unless otherwise noted. all temperature coefficients are measured at t j = +60 c to +100 c, unless otherwise noted.) (note 1) stresses beyond those listed under ?bsolute maximum ratings?may cause permanent damage to the device. these are stress rating s only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specificatio ns is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. v cc to gnd ............................................................-0.3v to +11v v ee to gnd..........................................................-5.75v to +0.3v v cc - v ee ...........................................................-0.3v to +16.75v dut_ to gnd.......................................................-2.75v to +7.5v data_, ndata_, rcv_, nrcv_ to gnd .................-2.5v to +5v data_ to ndata_, rcv_ to nrcv_ ..................................1.5v v t 12, v t 34 to gnd...................................................-2.5v to +5v data_, ndata_, rcv_, nrcv_ to v t 12 or v t 34 .................2v sclk, din, cs , rst to gnd ......................................-1v to +5v dhv_, dlv_, dtv_ to gnd ...................................-2.5v to +7.5v dhv_ to dlv_ ......................................................................10v dhv_ to dtv_ ......................................................................10v dlv_ to dtv_.......................................................................10v gs to gnd .............................................................................1v all other pins to gnd ......................(v ee - 0.3v) to (v cc + 0.3v) temp current...................................................-0.5ma to +20ma dut_ short circuit to -1.5v to +6.5v..........................continuous continuous power dissipation (t a = +70 c) 100-pin tqfp (derate 167mw/ c above +70 c) .........13.3w* storage temperature range .............................-65 c to +150 c junction temperature .....................................................+150 c lead temperature (soldering, 10s) .................................+300 c parameter symbol conditions min typ max units power supplies positive supply v cc 9.5 9.75 10.5 v negative supply v ee -5.25 -4.75 -4.50 v drivers active 192 215 positive supply current (note 2) i cc drivers in high impedance 175 196 ma drivers active -224 -251 negative supply current (note 2) i ee drivers in high impedance -207 -232 ma drivers active 3.0 3.3 power dissipation (note 2) p d drivers in high impedance 2.7 3.1 w dut_ characteristics operating voltage range v dut (note 3) -1.5 +6.5 v leakage current in high-impedance mode i dut lleak = 0; v dut _ = -1.5v, 0, +3v, +6.5v 3a leakage current in low-leakage mode lleak = 1; v dut _ = -1.5v, 0, +3v, +6.5v 5 50 na driver in term mode (dut_ = dtv_) 2 5 combined capacitance c dut driver in high-impedance mode 4 6 pf low-leakage enable time (notes 4, 5) 20 s low-leakage disable time (notes 5, 6) 0.1 s low-leakage recovery time to return to the specified maximum leakage after a 3v, 4v/ns step at dut_ (notes 5, 6) 5s * dissipation wattage values are based on still air with no heat sink. actual maximum power dissipation is a function of heat ext raction technique and may be substantially higher. free datasheet http:///
MAX9977 quad, low-power, 1200mbps ate driver _______________________________________________________________________________________ 3 electrical characteristics (continued) (v cc = +9.75v, v ee = -4.75v, v gs = 0, v t 12 = v t 34 = 1.8v, t j = +85 c, unless otherwise noted. all temperature coefficients are measured at t j = +60 c to +100 c, unless otherwise noted.) (note 1) parameter symbol conditions min typ max units control and levels inputs level programming inputs (dhv_, dlv_, dtv_) input bias current i bias 25 a settling time to 0.1% of full-scale change 1 s differential control inputs (data_, ndata_, rcv_, nrcv_) input high voltage v ihd 0 3.5 v input low voltage v ild -0.2 +3.2 v between differential inputs 0.15 1.00 differential input voltage v diff between a differential input and its termination voltage 1.9 v input termination voltage v t_ _ 0 +3.5 v input termination resistor between signal and corresponding termination voltage input 47.5 50 52.5 ? single-ended control inputs ( cs , sclk, din, rst ) internal threshold reference v thrint 1.05 1.25 1.45 v internal reference output resistance r o 20 k ? external threshold reference v thr 0.43 1.73 v input high voltage v ih v thr + 0.2 3.5 v input low voltage v il -0.1 v thr - 0.2 v input bias current i b 25 a serial interface timing (figure 4) sclk frequency f sclk 50 mhz sclk pulse-width high t ch 8ns sclk pulse-width low t cl 8ns cs low to sclk high setup t css0 3.5 ns cs high to sclk high setup t css1 3.5 ns sclk high to cs high hold t csh1 3.5 ns din to sclk high setup t ds 3.5 ns din to sclk high hold t dh 3.5 ns cs pulse-width high t cswh 20 ns temperature monitor (temp) nominal voltage t j = +70 c, r l 10m ? c output resistance 20 k ? free datasheet http:///
MAX9977 quad, low-power, 1200mbps ate driver 4 _______________________________________________________________________________________ electrical characteristics (continued) (v cc = +9.75v, v ee = -4.75v, v gs = 0, v t 12 = v t 34 = 1.8v, t j = +85 c, unless otherwise noted. all temperature coefficients are measured at t j = +60 c to +100 c, unless otherwise noted.) (note 1) parameter symbol conditions min typ max units drivers (note 7) d c o u t pu t ch a r a c t er i st i c s ( r l 1 0 m ? ) dhv_, dlv_, dtv_ output offset voltage v os at dut_ with v dhv _, v dtv _, v dlv _ independently tested at +1.5v 15 mv v gs = +100mv, v dhv _ = 6.5v + 100mv 2 output offset voltage due to ground sense v gsos v gs = -100mv, v dlv _ = -1.5v - 100mv 2 mv dhv_, dlv_, dtv_ output offset temperature coefficient +200 v/ c dhv_, dlv_, dtv_ gain a v measured with v dhv _, v dlv _, and v dtv _ at 0 and 4.5v 0.997 1.00 1.003 v/v dhv_, dlv_, dtv_ gain temperature coefficient -50 ppm/ c v dut _ = 1.5v, 3v (note 8) 5 linearity error full range (notes 8, 9) 15 mv dhv_ to dlv_ crosstalk v dlv _ = 0; v dhv _ = 200mv, 6.5v 2 mv dlv_ to dhv_ crosstalk v dhv _ = 5v; v dlv _ = -1.5v, +4.8v 2 mv dtv_ to dlv_ and dhv_ crosstalk v dhv _ = 3v; v dlv _ = 0; v dtv _ = -1.5v, +6.5v 2 mv dhv_ to dtv_ crosstalk v dtv _ = 1.5v; v dlv _ = 0; v dhv _ = 1.6v, 3v 2 mv dlv_ to dtv_ crosstalk v dtv _ = 1.5v; v dhv _ = 3v; v dlv _ = 0, 1.4v 2 mv dhv_, dtv_, dlv_ dc power-supply rejection ratio psrr (note 10) 18 mv/v maximum dc drive current i dut _ 40 80 ma dc output resistance r dut _i dut _ = 30ma (note 11) 46 47 48 ? i dut _ = 1ma, 8ma 0.5 1 dc output resistance variation ? r dut _ i dut _ = 1ma, 8ma, 15ma, 40ma 0.75 1.5 ? dynamic output characteristics (z l = 50 ? ) ac drive current 80 ma v dlv _ = 0, v dhv _ = 0.1v 15 22 v dlv _ = 0, v dhv _ = 1v 110 130 drive-mode overshoot v dlv _ = 0, v dhv _ = 3v 210 370 mv v dlv _ = 0, v dhv _ = 0.1v 4 11 v dlv _ = 0, v dhv _ = 1v 20 65 drive-mode undershoot v dlv _ = 0, v dhv _ = 3v 30 185 mv v dhv _ = v dtv _ = 1v, v dlv _ = 0 180 250 term-mode spike v dlv _ = v dtv _ = 0, v dhv _ = 1v 180 250 mv v dlv _ = -1.0v, v dhv _ = 0 100 high-impedance-mode spike v dlv _ = 0, v dhv _ = 1v 100 mv free datasheet http:///
MAX9977 quad, low-power, 1200mbps ate driver _______________________________________________________________________________________ 5 electrical characteristics (continued) (v cc = +9.75v, v ee = -4.75v, v gs = 0, v t 12 = v t 34 = 1.8v, t j = +85 c, unless otherwise noted. all temperature coefficients are measured at t j = +60 c to +100 c, unless otherwise noted.) (note 1) parameter symbol conditions min typ max units settling time to within 25mv 3v step (note 12) 4 ns settling time to within 5mv 3v step (note 12) 40 ns timing characteristics (z l = 50 ? ) (note 13) prop delay, data to output t pdd 1.2 1.5 1.9 ns prop delay match, t lh vs. t hl 3v p-p 40 100 ps prop delay match, drivers within package (note 14) 40 ps prop-delay temperature coefficient +1.6 ps/ c 0.2v p-p , 40mhz, 0.6ns to 24.4ns pulse width, relative to 12.5ns pulse width 25 50 1v p-p , 40mhz, 0.6ns to 24.4ns pulse width, relative to 12.5ns pulse width 25 50 2v p-p , 40mhz, 0.75ns to 24.25ns pulse width, relative to 12.5ns pulse width 30 55 3v p-p , 40mhz, 0.9ns to 24.1ns pulse width, relative to 12.5ns pulse width 35 60 prop delay change vs. pulse width 5v p-p , z l = 500 ? , 40mhz, 1.4ns to 23.6ns pulse width, relative to 12.5ns pulse width 100 ps prop delay change vs. common-mode voltage v dhv _ - v dlv _ = 1v, v dhv _ = 0 to 6v 50 75 ps prop delay, drive to high impedance t pddz v dhv _ = 1.0v, v dlv _ = -1.0v, v dtv _ = 0 1.6 2.1 2.6 ns prop delay, high impedance to drive t pdzd v dhv _ = 1.0v, v dlv _ = -1.0v, v dtv _ = 0 2.6 3.2 3.9 ns prop delay match, t pddz vs. t pdzd -1.5 -1.1 -0.7 ns prop delay match, t pddz vs. t lh 0.2 0.6 1.0 ns prop delay, drive to term t pddt v dhv _ = 3v, v dlv _ = 0, v dtv _ = 1.5v 1.3 1.8 2.3 ns prop delay, term to drive t pdtd v dhv _ = 3v, v dlv _ = 0, v dtv _ = 1.5v 1.6 2.1 2.7 ns p r op d el ay m atch, t p d d t vs. t p d t d -0.7 -0.3 -0.1 ns prop delay match, t pddt vs. t lh -0.1 +0.3 +0.7 ns dynamic performance (z l = 50 ? ) 0.2v p-p , 10% to 90% 260 310 360 1v p-p , 10% to 90% 330 390 450 2v p-p , 10% to 90% 430 500 570 3v p-p , 10% to 90% 500 650 750 rise and fall time t r , t f 5v p-p , z l = 500 ? , 10% to 90% 800 1000 1200 ps rise and fall time match t r vs. t f 3v p-p , 10% to 90% 50 ps free datasheet http:///
MAX9977 quad, low-power, 1200mbps ate driver 6 _______________________________________________________________________________________ electrical characteristics (continued) (v cc = +9.75v, v ee = -4.75v, v gs = 0, v t 12 = v t 34 = 1.8v, t j = +85 c, unless otherwise noted. all temperature coefficients are measured at t j = +60 c to +100 c, unless otherwise noted.) (note 1) parameter symbol conditions min typ max units 0.2v p-p 550 1v p-p 550 630 2v p-p 650 750 3v p-p 850 1000 minimum pulse width (note 15) 5v p-p , z l = 500 ? ? 800 mbps dynamic crosstalk (note 17) 15 mv p-p rise and fall time, drive to term t dtr , t dtf v dhv _ = 3v, v dlv _ = 0, v dtv _ = 1.5v, 10% to 90%, figure 1a (note 18) 0.6 1.0 1.3 ns rise and fall time, term to drive t tdr , t tdf v dhv _ = 3v, v dlv _ = 0, v dtv _ = 1.5v, 10% to 90%, figure 1b (note 18) 0.6 1.0 1.3 ns ground sense gs voltage range v gs 250 mv gs input bias current v gs = 0 25 a note 1: unless otherwise specified, all minimum and maximum dc and ac driver 3v rise and fall time test limits are 100% tested at production. all other test limits are guaranteed by design. all tests are performed at nominal supply voltages, unless other- wise noted. note 2: total is for a quad device and is specified at the worst-case setting. the supply currents are measured with typical supply voltages. note 3: externally forced voltages may exceed this range provided that the absolute maximum ratings are not exceeded. note 4: transition time from lleak being asserted to leakage current dropping below specified limits. note 5: based on simulation results only. note 6: transition time from lleak being deasserted to output returning to normal operating mode. note 7: with the exception of offset and gain/cmrr tests, reference input values are calibrated for offset and gain. note 8: specifications measured at the end points of the full range. full range is -1.3v v dhv_ +6.5v, -1.5v v dlv_ +6.3v, -1.5v v dtv_ +6.5v. note 9: relative to straight line between 0 and 4.5v. note 10: change in offset voltage with power supplies independently set to their minimum and maximum values. note 11: nominal target value is 47 ? . contact factory for alternate trim selections within the 45 ? to 51 ? range. note 12: measured from the crossing point of data_ inputs to the settling of the driver output. note 13: prop delays are measured from the crossing point of the differential input signals to the 50% point of the expected output swing. rise time of the differential inputs data_ and rcv_ are 250ps (10% to 90%). note 14: rising edge to rising edge or falling edge to falling edge. note 15: specified amplitude is programmed. at this pulse width, the output reaches at least 90% of its nominal (dc) amplitude. the pulse width is measured at data_. note 16: specified amplitude is programmed. maximum data rate is specified in transitions per second. a square wave that reaches at least 90% of its programmed amplitude may be generated at one-half of this frequency. note 17: crosstalk from one driver to any other. aggressor channel is driving 3v p-p into a 50 ? load. victim channel is in term mode with v dtv_ = +1.5v. note 18: indicative of switching speed from dhv_ or dlv_ to dtv_ and dtv_ to dhv_ or dlv_ when v dlv_ < v dtv_ < v dhv_ . if v dtv_ < v dlv_ or v dtv_ > v dhv_ , switching speed is degraded by a factor of approximately 3. free datasheet http:///
MAX9977 quad, low-power, 1200mbps ate driver _______________________________________________________________________________________ 7 dtv_ dhv_ t tdr dlv_ t tdf dhv_ t dtf dlv_ t dtr dtv_ (a) drive-to-term rise and fall time (b) term-to-drive rise and fall time 90% 10% 90% 10% 90% 10% 90% 10% figure 1. drive-to-term and term-to-drive rise and fall times typical operating characteristics (v cc = +9.75v, v ee = -4.75v, v gs = 0, t j = +85 c, unless otherwise noted.) driver large-signal response into 500 ? MAX9977 toc03 v dut_ = 1v/div t = 2.0ns/div v dlv_ = 0 r l = 500 ? v dhv_ = 5v v dhv_ = 3v v dhv_ = 1v 0 driver small-signal response MAX9977 toc01 v dut_ = 50mv/div t = 2.0ns/div v dlv_ = 0 r l = 50 ? v dhv_ = 500mv v dhv_ = 200mv v dhv_ = 100mv 0 driver large-signal response MAX9977 toc02 v dut_ = 500mv/div t = 2.0ns/div v dlv_ = 0 r l = 50 ? v dhv_ = 5v v dhv_ = 3v v dhv_ = 1v 0 free datasheet http:///
driver 1v trailing-edge timing error vs. pulse width MAX9977 toc10 pulse width (ns) timing error (ps) 20 15 10 5 15 10 5 0 -5 -10 -15 -20 -25 20 -30 025 normalized at pw = 12.5ns period = 25ns, v dhv_ = +1v, v dlv_ = 0 driver time delay vs. common-mode voltage MAX9977 toc11 common-mode voltage (v) time delay (ps) 5 4 3 2 1 0 50 40 30 20 10 0 -10 60 -20 -1 6 normalized at v cm = 1.5v MAX9977 quad, low-power, 1200mbps ate driver 8 _______________________________________________________________________________________ driver 1v, 600mbps signal response MAX9977 toc04 v dut_ = 100mv/div t = 1ns/div 0 v dlv_ = 0, v dhv_ = 1v, r l = 50 ? driver 1v, 1800mbps signal response MAX9977 toc05 v dut_ = 100mv/div t = 500ps/div 0 v dlv_ = 0, v dhv_ = 1v, r l = 50 ? driver 3v, 400mbps signal response MAX9977 toc06 v dut_ = 250mv/div t = 1ns/div v dlv_ = 0 v dhv_ = 3v r l = 50 ? 0 driver dynamic current-limit response MAX9977 toc08 i dut_ = 50ma/div t = 50ns/div 0 driver sourcing driver sinking r l = 10 ? drive to term transition MAX9977 toc12 v dut_ = 250mv/div t = 2.0ns/div r l = 50 ? 0 dhv_ to dtv_ dlv_ to dtv_ driver 3v, 1200mbps signal response MAX9977 toc07 v dut_ = 250mv/div t = 500ps/div v dlv_ = 0 v dhv_ = 3v r l = 50 ? 0 driver 3v trailing-edge timing error vs. pulse width MAX9977 toc09 pulse width (ns) timing error (ps) 20 15 10 5 0 -20 -40 -60 -80 -100 20 40 -120 025 normalized at pw = 12.5ns period = 25ns, v dhv_ = +3v, v dlv_ = 0 typical operating characteristics (continued) (v cc = +9.75v, v ee = -4.75v, v gs = 0, t j = +85 c, unless otherwise noted.) free datasheet http:///
MAX9977 quad, low-power, 1200mbps ate driver _______________________________________________________________________________________ 9 driver linearity error vs. output voltage MAX9977 toc14 v dut_ (v) linearity error (mv) 5.5 4.5 -0.5 0.5 1.5 2.5 3.5 -2 0 2 4 6 8 10 12 -4 -1.5 6.5 dut_ = dhv_ v dlv_ = -1.5v v dtv_ = 0 driver linearity error vs. output voltage MAX9977 toc15 v dut_ (v) linearity error (mv) 5.5 4.5 -0.5 0.5 1.5 2.5 3.5 -6 -4 -2 0 2 4 6 8 -8 -1.5 6.5 dut_ = dlv_ v dhv_ = +6.5v v dtv_ = 0 driver linearity error vs. output voltage MAX9977 toc16 v dut_ (v) linearity error (mv) 5.5 4.5 -0.5 0.5 1.5 2.5 3.5 6 5 3 2 1 0 -1 -2 4 7 -3 -1.5 6.5 dut_ = dtv_ v dlv_ = -1.5v v dhv_ = +6.5v crosstalk to dut_ from dlv_ with dut_ = dhv_ MAX9977 toc17 v dlv_ (v) v dut_ error (mv) 5.5 4.5 -0.5 0.5 1.5 2.5 3.5 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 1.0 -1.0 -1.5 6.5 v dhv_ = 5v v dtv_ = 1.5v normalized at v dlv_ = 0 crosstalk to dut_ from dhv_ with dut_ = dlv_ MAX9977 toc18 v dhv_ (v) v dut_ error (mv) 5.5 4.5 -0.5 0.5 1.5 2.5 3.5 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 1.0 -1.0 -1.5 6.5 v dlv_ = 0 v dtv_ = 1.5v normalized at v dhv_ = 5v typical operating characteristics (continued) (v cc = +9.75v, v ee = -4.75v, v gs = 0, t j = +85 c, unless otherwise noted.) drive to high-impedance transition MAX9977 toc13 v dut_ = 200mv/div t = 2.0ns/div 0 dhv_ to high impedance dlv_ to high impedance r l = 50 ? crosstalk to dut_ from dtv_ with dut_ = dhv_ MAX9977 toc19 v dtv_ (v) v dut_ error (mv) 5.5 4.5 -0.5 0.5 1.5 2.5 3.5 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1.0 -1.0 -1.5 6.5 v dhv_ = 3v v dlv_ = 0 normalized at v dtv_ = 1.5v crosstalk to dut_ from dtv_ with dut_ = dlv_ MAX9977 toc20 v dtv_ (v) v dut_ error (mv) 5.5 4.5 -0.5 0.5 1.5 2.5 3.5 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1.0 -1.0 -1.5 6.5 v dhv_ = 6.5v v dlv_ = 0 normalized at v dtv_ = 1.5v crosstalk to dut_ from dlv_ with dut_ = dtv_ MAX9977 toc21 v dlv_ (v) v dut_ error (mv) 5.5 4.5 -0.5 0.5 1.5 2.5 3.5 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1.0 -1.0 -1.5 6.5 v dhv_ = 6.5v v dtv_ = 1.5v normalized at v dlv_ = 0 free datasheet http:///
low-leakage to drive 1v transition MAX9977 toc28 t = 1ns/div v dut_ = 100mv/div 0 0 r l = 50 ? c l = 10pf driver reference current vs. driver reference voltage MAX9977 toc29 reference voltage (v) reference current ( a) 5.5 4.5 -0.5 0.5 1.5 2.5 3.5 0.90 0.95 1.00 1.05 1.10 1.15 1.20 1.25 0.85 -1.5 6.5 dhv_ dlv_ dtv_ MAX9977 quad, low-power, 1200mbps ate driver 10 ______________________________________________________________________________________ crosstalk to dut_ from dhv_ with dut_ = dtv_ MAX9977 toc22 v dhv_ (v) v dut_ error (mv) 5.5 4.5 -0.5 0.5 1.5 2.5 3.5 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1.0 -1.0 -1.5 6.5 v dtv_ = 1.5v v dlv_ = -1.5v normalized at v dhv_ = 3v driver gain vs. temperature MAX9977 toc23 die temperature ( c) gain (v/v) 95 90 85 80 75 70 65 0.9996 0.9994 0.9998 1.0002 1.0000 1.0004 1.0006 1.0010 1.0008 1.0012 0.9992 60 100 normalized at t j = +85 c driver offset vs. temperature MAX9977 toc24 die temperature ( c) offset (mv) 95 90 85 80 75 70 65 -1 -2 -3 -4 0 1 2 3 4 -5 60 100 normalized at t j = +85 c high-impedance current vs. dut_ voltage MAX9977 toc25 v dut_ (v) i dut_ ( a) 5.5 4.5 2.5 3.5 0.5 1.5 -0.5 -1.05 -1.00 -0.95 -0.90 -0.70 -0.75 -0.80 -0.85 -0.65 -0.60 -0.55 -0.50 -1.10 -1.5 6.5 low-leakage current vs. dut_ voltage MAX9977 toc26 v dut_ (v) dut_ leakage (na) 5.5 4.5 2.5 3.5 0.5 1.5 -0.5 -4 -3 -2 -1 0 1 2 -5 -1.5 6.5 drive 1v to low-leakage transition MAX9977 toc27 t = 1ns/div v dut_ = 100mv/div 0 0 r l = 50 ? c l = 10pf typical operating characteristics (continued) (v cc = +9.75v, v ee = -4.75v, v gs = 0, t j = +85 c, unless otherwise noted.) free datasheet http:///
MAX9977 quad, low-power, 1200mbps ate driver ______________________________________________________________________________________ 11 supply current i cc vs. voltage current v cc MAX9977 toc30 v cc (v) i cc (ma) 10.3 10.1 9.9 9.7 170 165 175 180 185 190 195 200 160 9.5 10.5 a: v dut_ = v dtv_ = 1.5v, v dhv_ = 3v, v dlv_ = 0, r l = 10k ? , v ee = -4.75v b: same as a except driver in high-impedance mode a b supply current i ee vs. voltage current v ee MAX9977 toc31 v ee (v) i ee (ma) -4.95 -4.80 -4.65 -4.50 -5.10 -215 -220 -225 -210 -205 -200 -195 -190 -230 -5.25 a: v dut_ = v dtv_ = 1.5v, v dhv_ = 3v, v dlv_ = 0, r l = 10k ? , v cc = 9.75v b: same as a except driver in high-impedance mode b a typical operating characteristics (continued) (v cc = +9.75v, v ee = -4.75v, v gs = 0, t j = +85 c, unless otherwise noted.) v dut_ = v dtv_ = 1.5v, v dhv_ = 3v, v dlv_ = 0, r l = 10k ? , v cc = 9.75v, v ee = -4.75v supply current i cc vs. temperature MAX9977 toc32 temperature ( c) i cc (ma) 90 95 85 170 165 180 175 190 185 200 195 205 210 160 80 100 v dut_ = v dtv_ = 1.5v, v dhv_ = 3v, v dlv_ = 0, r l = 10k ? , v cc = 9.75v, v ee = -4.75v supply current i ee vs. temperature MAX9977 toc33 temperature ( c) i ee (ma) 90 95 85 -205 -210 -215 -220 -225 -230 -235 -200 -240 80 100 driver output-voltage error vs. ground-sense voltage MAX9977 toc34 v gs (mv) error (mv) 150 50 -50 -150 6 4 2 0 -2 -4 -6 -8 -10 8 -12 -250 250 v dut_ = v dlv_ = -1.5v v dut_ = v dhv_ = 3v v dtv_ = 1.5v, r l = 10k ?, normalized at v gs = 0 free datasheet http:///
MAX9977 quad, low-power, 1200mbps ate driver 12 ______________________________________________________________________________________ pin description pin name function 1v t 34 channel 3/4 termination voltage input differential inputs, data3, ndata3, rcv3, nrcv3, data4, ndata4, rcv4, and nrcv4. see the functional diagram . 2 data4 3 ndata4 channel 4 multiplexer control inputs. differential controls data4 and ndata4 select driver 4 s input from dhv4 or dlv4. drive data4 above ndata4 to select dhv4. drive ndata4 above data4 to select dlv4. see table 1. 4 rcv4 5 nrcv4 channel 4 multiplexer control inputs. differential controls rcv4 and nrcv4 place channel 4 into receive mode. drive rcv4 above nrcv4 to place channel 4 into receive mode. drive nrcv4 above rcv4 to place channel 4 into drive mode. see table 1. 6 data3 7 ndata3 channel 3 multiplexer control inputs. differential controls data3 and ndata3 select driver 3 s input from dhv3 or dlv3. drive data3 above ndata3 to select dhv3. drive ndata3 above data3 to select dlv3. see table 1. 8 rcv3 9 nrcv3 channel 3 multiplexer control inputs. differential controls rcv3 and nrcv3 place channel 3 into receive mode. drive rcv3 above nrcv3 to place channel 3 into receive mode. drive nrcv3 above rcv3 to place channel 3 into drive mode. see table 1. 10, 27, 54, 55, 60, 61, 65, 66, 71, 72, 99 v ee negative power-supply input 11, 28, 51, 56, 62, 64, 70, 75, 98 gnd ground connection 12 rst reset input. asynchronous reset input for the serial register. rst is active low. see figure 3. 13 cs chip-select input. serial-port activation input. cs is active low. 14 sclk serial-clock input. clock for serial port. 15 din data input. serial-port data input. 16, 26, 52, 58, 68, 74, 100 v cc positive power-supply input 17 nrcv2 18 rcv2 channel 2 multiplexer control inputs. differential controls rcv2 and nrcv2 place channel 2 into receive mode. drive rcv2 above nrcv2 to place channel 2 into receive mode. drive nrcv2 above rcv2 to place channel 2 into drive mode. see table 1. 19 ndata2 20 data2 channel 2 multiplexer control inputs. differential controls data2 and ndata2 select driver 2 s input from dhv2 or dlv2. drive data2 above ndata2 to select dhv2. drive ndata2 above data2 to select dlv2. see table 1. 21 nrcv1 22 rcv1 channel 1 multiplexer control inputs. differential controls rcv1 and nrcv1 place channel 1 into receive mode. drive rcv1 above nrcv1 to place channel 1 into receive mode. drive nrcv1 above rcv1 to place channel 1 into drive mode. see table 1. 23 ndata1 24 data1 channel 1 multiplexer control inputs. differential controls data1 and ndata1 select driver 1 s input from dhv1 or dlv1. drive data1 above ndata1 to select dhv1. drive ndata1 above data1 to select dlv1. see table 1. 25 v t 12 channel 1/2 termination voltage input differential inputs, data1, ndata1, rcv1, nrcv1, data2, ndata2, rcv2, and nrcv2. see the functional diagram . 29 38, 43, 44, 45, 49, 50, 57, 69, 76, 77, 81, 82, 83, 88 97 n.c. no connection. leave unconnected. free datasheet http:///
MAX9977 quad, low-power, 1200mbps ate driver ______________________________________________________________________________________ 13 detailed description the MAX9977 low-power, high-speed, pin-electronics ic includes four three-level pin drivers. the drivers fea- ture a -1.5v to +6.5v operating range and high-speed operation, include high-impedance and active-termina- tion (3rd-level drive) modes, and are highly linear even at low voltage swings. optional internal resistors at the high-speed inputs pro- vide compatibility with cml interfaces and reduce the discrete component count on the circuit board. connect the termination voltage inputs, v t 12 and v t 34, to a volt- age appropriate for the drive circuits to terminate the multiplexer control inputs (see the functional diagram ). a 3-wire, low-voltage cmos-compatible serial interface programs the low-leakage and tri-state/terminate opera- tional configurations of the MAX9977. compatibility with the max9963 and max9965 to upgrade from the max9963 or max9965 to the MAX9977 take these steps: 1) gs on the MAX9977 is in the position of chv2 on the max9963/max9965. program chv2 to zero volts. 2) thr on the MAX9977 is in the position of chv3 on the max9963/max9965. if chv3 is being controlled by a dac that is referenced to ground sense, reas- sign this input to a reference that is not affected by changes in ground sense. 3) MAX9977ak drv_ and rcv_ inputs have center taps v t 12 and v t 34 for the internal termination resistors in the positions of v cco12 and v cco34 of the max9963/max9965, the comparator-output resistor termination points. bias these termination points accordingly. output driver the driver input is a high-speed multiplexer that selects one of three voltage inputs: dhv_, dlv_, or dtv_. this switching is controlled by high-speed inputs data_ and rcv_ and mode-control bit tmsel (table 1). dut_ can be toggled at high speed between the buffer output and high-impedance mode, or it can be placed into low-leakage mode (figure 2, table 1). high-speed input rcv_ and mode-control bits tmsel and lleak control the switching. in high-impedance mode, the bias current at dut_ is less than 3a over the -1.5v to +6.5v range, while the node maintains its ability to track pin name function 39 dhv2 channel 2 driver high voltage input 40 dlv2 channel 2 driver low voltage input 41 dtv2 channel 2 driver termination voltage input 42 gs ground-sense voltage input for all channels 46 dhv1 channel 1 driver high voltage input 47 dlv1 channel 1 driver low voltage input 48 dtv1 channel 1 driver termination voltage input 53 dut1 channel 1 device-under-test input/output 59 dut2 channel 2 device-under-test input/output 63 temp temperature monitor output, one per device 67 dut3 channel 3 device-under-test input/output 73 dut4 channel 4 device-under-test input/output 78 dtv4 channel 4 driver termination voltage input 79 dlv4 channel 4 driver low voltage input 80 dhv4 channel 4 driver high voltage input 84 thr single-ended logic threshold reference for all channels 85 dtv3 channel 3 driver termination voltage input 86 dlv3 channel 3 driver low voltage input 87 dhv3 channel 3 driver high voltage input pin description (continued) free datasheet http:///
MAX9977 quad, low-power, 1200mbps ate driver 14 ______________________________________________________________________________________ high-speed signals. in low-leakage mode, the bias cur- rent at dut_ is further reduced to less than 50na, and signal tracking slows. see the low-leakage mode, lleak section for more details. the nominal driver output resistance is 47 ? . contact the factory for custom resistance values within the 45 ? to 51 ? range. serial interface and device control a cmos-compatible serial interface controls the MAX9977 modes (figure 3 and table 2). control data flow into an 8-bit shift register (msb first) and are latched when cs is taken high, as shown in figure 4. latches contain 2 control bits for each channel of the MAX9977. data from the shift register are then loaded to any or all of a group of four quad latches as deter- mined by bits d4 and d7. the control bits, in conjunc- tion with external inputs data_ and rcv_, manage the features of each channel. rst sets lleak = 1 for all channels, forcing them into low-leakage mode. all other bits are unaffected. at power-up, hold rst low until v cc and v ee have stabilized. analog control input thr sets the threshold for the input logic, allowing operation with cmos logic as low as 0.9v. leaving thr unconnected results in a nominal threshold of 1.25v from an internal reference, providing compatibility with 2.5v to 3.3v logic. low-leakage mode, lleak asserting lleak through the serial port or with rst places the MAX9977 into a low-leakage state (see the electrical characteristics table). this mode is convenient MAX9977 serial interface dlv_ dhv_ dtv_ data_ rcv_ 47 ? dut_ 2 0 0 0 1 1 high-speed inputs reference inputs tmsel lleak high impedance buffer figure 2. simplified driver channel table 1. driver logic external connections internal control register data rcv tmsel lleak driver output 1 0 x 0 drive to dhv_ 0 0 x 0 drive to dlv_ x110 drive to dtv_ (term mode) x100 high-impedance mode (high-z) x x x 1 low-leakage mode free datasheet http:///
MAX9977 quad, low-power, 1200mbps ate driver ______________________________________________________________________________________ 15 table 2. serial interface bit description bit name description bit state after reset and at power-up d7 ch1 channel 1 write enable. set to 1 to update the control byte for channel 1. set to 0 to make no changes to channel 1. 0 d6 ch2 channel 2 write enable. set to 1 to update the control byte for channel 2. set to 0 to make no changes to channel 2. 0 d5 ch3 channel 3 write enable. set to 1 to update the control byte for channel 3. set to 0 to make no changes to channel 3. 0 d4 ch4 channel 4 write enable. set to 1 to update the control byte for channel 4. set to 0 to make no changes to channel 4. 0 d3 lleak low - leakag e s el ect. s et to 1 to p ut d r i ver i n l ow - l eakag e m od e. s et to 0 for nor m al op er ati on. 1 d2 unused x d1 unused these bits are not used. their logic state has no effect. x d0 tmsel termination select. driver termination select bit. 0 sclk din 0 7 shift register tmsel channel 1 mode bits lleak 20k ? v thrint = 1.25v thr 123456 f/f d q enable 3 f/f dq enable 3 f/f dq enable f/f d q enable 6 6 7 0 0 7 cs 5 tmsel channel 3 mode bits lleak f/f d enable 3 f/f dq enable 5 0 tmsel channel 2 mode bits lleak MAX9977 set set set rst set enable 4 tmsel channel 4 mode bits lleak f/f d enable 3 f/f dq enable 4 0 tmsel unused (= 0) unused (= 0) lleak ch4 ch3 ch2 ch1 figure 3. serial interface free datasheet http:///
MAX9977 quad, low-power, 1200mbps ate driver 16 ______________________________________________________________________________________ for making iddq and pmu measurements without the need for an output disconnect relay. lleak is pro- grammed independently for each channel. when dut_ is driven with a high-speed signal while lleak is asserted, the leakage current momentarily increases beyond the limits specified for normal opera- tion. the low-leakage recovery specification in the electrical characteristics table indicates device behav- ior under this condition. gs input the ground-sense input, gs, provides a ground refer- ence for the mux inputs. connect gs to the ground of the dac circuits driving dhv_, dtv_, and dlv_. to maintain an 8v range in the presence of gs variations, gs offsets dhv_, dlv_, and dtv_ ranges. adequate supply headroom must be maintained in the presence of gs variations. ensure: v cc 9.5v + max (v gs ) v ee -4.5v + min (v gs ) temperature monitor the MAX9977 supplies a temperature output signal, temp, that asserts a 3.33v nominal output voltage at a +70 c (343k) die temperature. the output voltage changes proportionally with temperature at 10mv/ c. heat removal under normal circumstances, the MAX9977 requires heat removal through the exposed pad by use of an external heat sink. the exposed pad is electrically at v ee potential, and must be either connected to v ee or isolat- ed. jc of the exposed-pad package is approximately 1 c/w to 2 c/w. die temperature is thus highly depen- dent upon the heat removal techniques used in the application. maximum total power dissipation occurs under the following conditions: ? v cc = +10.5v ? v ee = -5.25v ? v dhv_ = 6.5v, data = high ? short-circuit current = 60ma under these extreme conditions, the total power dissi- pation is 5.8w. if the die temperature cannot be main- tained at an acceptable level under these conditions, use software clamping to limit the load output currents to lower values and/or reduce the supply voltages. power-supply considerations bypass all v cc and v ee power input pins with 0.01f capacitors, and use bulk bypassing of at least 10f on each supply. sclk din d7 d6 d5 d4 d3 d1 d0 d2 t cl t css0 t css1 t csh1 t dh t ds t ch t cswh cs figure 4. serial-interface timing free datasheet http:///
MAX9977 quad, low-power, 1200mbps ate driver maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim product. no circu it patent licenses are implied. maxim reserves the right to change the circuitry and specifications without notice at any time. maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 ____________________ 17 ? 2005 maxim integrated products printed usa is a registered trademark of maxim integrated products, inc. selector guide part internal data_ and rcv_ terminations heat extraction MAX9977akccq 100 ? with center tap top MAX9977adccq* none top * future product contact factory for availability. package information for the latest package outline information, go to www.maxim-ic.com/packages . 1 v t 34 2 data4 3 ndata4 4 rcv4 5 nrcv4 6 data3 7 ndata3 8 rcv3 9 nrcv3 10 v ee 11 gnd 12 13 14 sclk 15 din 16 v cc 17 nrcv2 18 rcv2 19 ndata2 20 data2 21 nrcv1 22 rcv1 23 ndata1 24 data1 25 v t 12 75 gnd 74 v cc 73 dut4 72 v ee 71 v ee 70 gnd 69 n.c. 68 v cc 67 dut3 66 v ee 65 v ee 64 gnd 63 temp 62 gnd 61 v ee 60 v ee 59 dut2 58 v cc 57 n.c. 56 gnd 55 v ee 54 v ee 53 dut1 52 v cc 51 gnd 26 v cc 27 v ee 28 gnd 29 n.c. 30 n.c. 31 n.c. 32 n.c. 33 n.c. 34 n.c. 35 n.c. 36 n.c. 37 n.c. 38 n.c. 39 dhv2 40 dlv2 41 dtv2 42 gs 43 n.c. 44 n.c. 45 n.c. 46 dhv1 47 dlv1 48 dtv1 49 n.c. 50 n.c. 100 v cc 99 v ee 98 gnd 97 n.c. 96 n.c. 95 n.c. 94 n.c. 93 n.c. 92 n.c. 91 n.c. 90 n.c. 89 n.c. 88 n.c. 87 dhv3 86 dlv3 85 dtv3 84 thr 83 n.c. 82 n.c. 81 n.c. 80 dhv4 79 dlv4 78 dtv4 77 n.c. 76 n.c. rst cs MAX9977 top view tqfp-idp pin configuration free datasheet http:///

▲Up To Search▲

Price & Availability of MAX9977

	To Download MAX9977 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .