tm 3-1 HA4600 480mhz, sot-23, video buffer with output disable the HA4600 is a very wide bandwidth, unity gain buffer ideal for professional video switching, hdtv, computer monitor routing, and other high performance applications. the circuit features very low power dissipation (105mw enabled, 1mw disabled), excellent differential gain and phase, and very high off isolation. when disabled, the output is switched to a high impedance state, making the HA4600 ideal for routing matrix equipment and video multiplexers. the HA4600 also features fast switching and symmetric slew rates. a typical application for the HA4600 is interfacing intersil? wide range of video crosspoint switches. for applications requiring a tally output (enable indicator), please refer to the ha4201 data sheet. pinouts HA4600 (pdip, soic) top view HA4600 (sot-23) top view features micro package available. . . . . . . . . . . . . . . . . . . . sot-23 low power dissipation . . . . . . . . . . . . . . . . . . . . . 105mw symmetrical slew rates . . . . . . . . . . . . . . . . . . 1700v/ s 0.1db gain flatness. . . . . . . . . . . . . . . . . . . . . . . 250mhz off isolation (100mhz) . . . . . . . . . . . . . . . . . . . . . . . 85db differential gain and phase . . . . . . . 0.01%/0.01 degrees high esd rating . . . . . . . . . . . . . . . . . . . . . . . . . >1800v ttl compatible enable input improved replacement for gb4600 applications professional video switching and routing video multiplexers hdtv computer graphics rf switching and routing pcm data routing truth table en out 0 high z 1 active en v- v+ out 1 2 3 4 8 7 6 5 gnd in nc nc v+ v- out in gnd en 1 2 3 6 5 4 ordering information part number (brand) temp. range ( o c) package pkg. no. HA4600cp 0 to 70 8 ld pdip e8.3 HA4600cb (h4600cb) 0 to 70 8 ld soic m8.15 HA4600cb96 (h4600cb) 0 to 70 8 ld soic tape and reel m8.15 HA4600ch96 (4600) 0 to 70 6 ld sot-23 tape and reel p6.064 data sheet j une 2000 file number 3990.6 caution: these devices are sensitive to electrostatic discharge; follow proper ic handling procedures. 1-888-intersil or 321-724-7143 | intersil and design is a trademark of intersil corporation. | copyright intersil corporation 2000
3-2 absolute maximum ratings thermal information voltage between v+ and v- . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12v input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v supply digital input current (note 2) . . . . . . . . . . . . . . . . . . . . . . . . . 25ma output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20ma esd rating human body model (per mil-std-883 method 3015.7) . . . . 1800v operating conditions temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 o c to 70 o c thermal resistance (typical, note 1) ja ( o c/w) pdip package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130 soic package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170 sot-23 package . . . . . . . . . . . . . . . . . . . . . . . . . . . 210 maximum junction temperature (die) . . . . . . . . . . . . . . . . . . . 175 o c maximum junction temperature (plastic package) . . . . . . . 150 o c maximum storage temperature range . . . . . . . . . . -65 o c to 150 o c maximum lead temperature (soldering 10s) . . . . . . . . . . . . 300 o c (soic and sot-23 - lead tips only) caution: stresses above those listed in ?bsolute maximum ratings may cause permanent damage to the device. this is a stress only rating and operatio n of the device at these or any other conditions above those indicated in the operational sections of this speci?ation is not implied. notes: 1. ja is measured with the component mounted on an evaluation pc board in free air. 2. if an input signal is applied before the supplies are powered up, the input current must be limited to this maximum value. electrical speci?ations v supply = 5v, r l = 10k ? , v en = 2.0v, unless otherwise speci?d parameter test conditions temp. ( o c) min typ max units dc supply characteristics supply voltage full 4.5 5.0 5.5 v supply current (v out = 0v) v en = 2v 25, 70 - 10.5 13 ma v en = 2v 0 - - 14.5 ma v en = 0.8v 25, 70 - 100 115 a v en = 0.8v 0 - 100 125 a analog dc characteristics output voltage swing without clipping v out =v in v io 20mv 25, 70 2.7 2.8 - v 0 2.4 2.5 - v output current full 15 20 - ma input bias current full - 30 50 a output offset voltage 25 -10 - 10 mv output offset voltage drift (note 3) full - 25 50 v/ o c switching characteristics turn-on time 25 - 160 - ns turn-off time 25 - 320 - ns digital dc characteristics input logic high voltage full 2 - - v input logic low voltage full - - 0.8 v en input current 0v to 4v full -2 - 2 a ac characteristics insertion loss 1v p-p full - 0.04 0.05 db -3db bandwidth r s =82 ? , c l = 10pf 25 - 480 - mhz r s =43 ? , c l = 15pf 25 - 380 - mhz r s =36 ? , c l = 21pf 25 - 370 - mhz HA4600
3-3 ac test circuit note: c l = c x + test fixture capacitance. pc board layout the frequency response of this circuit depends greatly on the care taken in designing the pc board. the use of low inductance components such as chip resistors and chip capacitors is strongly recommended, while a solid ground plane is a must! attention should be given to decoupling the power supplies. a large value (10 f) tantalum in parallel with a small value (0.1 f) chip capacitor works well in most cases. keep input and output traces as short as possible, because trace inductance and capacitance can easily become the performance limiting items. application information general the HA4600 is a unity gain buffer that is optimized for high performance video applications. the output disable function makes it ideal for the matrix element in small, high input-to- output isolation switchers and routers. this buffer contains no feedback or gain setting resistors, so the output is a true high impedance load when the ic is disabled (en = 0). the HA4600 also excels as an input buffer for routers with a large number of outputs (i.e. each input must connect to a large number of outputs) and delivers performance superior to most video amplifiers at a fraction of the cost. as an input buffer, the HA4600 s low input capacitance and high input resistance provide excellent video terminations when used with an external 75 ? resistor. frequency response most applications utilizing the HA4600 require a series output resistor, r s , to tune the response for the speci? load capacitance, c l , driven. bandwidth and slew rate degrade as c l increases (as shown in the electrical speci?ation table), so give careful consideration to component placement to minimize trace length. as an example, -3db bandwidth decreases to 160mhz for c l = 100pf, r s =0 ? . in big matrix con?urations where c l is large, better 0.1db flat bandwidth r s =82 ? , c l = 10pf 25 - 250 - mhz r s =43 ? , c l = 15pf 25 - 175 - mhz r s =36 ? , c l = 21pf 25 - 170 - mhz input resistance full 200 400 - k ? input capacitance full - 1.0 - pf enabled output resistance full - 15 - ? disabled output capacitance v en = 0.8v full - 2.0 - pf differential gain (note 3) 4.43mhz 25 - 0.01 0.02 % differential phase (note 3) 4.43mhz 25 - 0.01 0.02 degrees off isolation 1v p-p , 100mhz, v en = 0.8v, r l =10 ? full - 85 - db slew rate (1.5v p-p , +sr/-sr) r s =82 ? , c l = 10pf 25 - 1750/1770 - v/ s r s =43 ? , c l = 15pf 25 - 1460/1360 - v/ s r s =36 ? , c l = 21pf 25 - 1410/1360 - v/ s total harmonic distortion (note 3) full - 0.01 0.1 % disabled output resistance full - 12 - m ? note: 3. this parameter is not tested. the limits are guaranteed based on lab characterization, and reflect lot-to-lot variation. electrical speci?ations v supply = 5v, r l = 10k ? , v en = 2.0v, unless otherwise speci?d (continued) parameter test conditions temp. ( o c) min typ max units 500 ? 400 ? 510 ? 75 ? v out v in 75 ? r s HA4600 hfa1100 + - c x 10k ? HA4600
3-4 frequency response is obtained by cascading two levels of crosspoints in the case of multiplexed outputs (see figure 2), or distributing the load between two drivers if c l is due to bussing and subsequent stage input capacitance. control signals en - the enable input is a ttl/cmos compatible, active high input. when driven low this input forces the output to a true high impedance state and reduces the power dissipation by two orders of magnitude. the en input has no on-chip pull-up resistor, so it must be connected to a logic high (recommend v+) if the enable function isn? utilized. switcher/router applications figure 1 illustrates one possible implementation of a wideband, low power, 4 x 4 switcher/router. a 4 x 4 switcher/router allows any of the four outputs to be driven by any one of the four inputs (e.g. each of the four inputs may connect to a different output, or an input may connect to multiple outputs). this application utilizes the HA4600 for the input buffer, the ha4404 (4 x 1 crosspoint switch) as the switch matrix, and the hfa1112 (programmable gain buffer) as the gain of two output driver. figure 2 details a 16 x 1 switcher (basically a 16:1 mux) which uses the HA4600 in a cascaded stage con?uration to minimize capacitive loading at each output node, thus increasing system bandwidth. power up considerations no signals should be applied to the analog or digital inputs before the power supplies are activated. latch-up may occur if the inputs are driven at the time of power up. to prevent latch-up, the input currents during power up must not exceed the values listed in the absolute maximum ratings. intersil s crosspoint family intersil offers a variety of 1 x 1 and 4 x 1 crosspoint switches. in addition to the HA4600, the 1 x 1 family includes the ha4201 which is an essentially similar device that includes a tally output (enable indicator). the 4 x 1 family is comprised of the ha4314, ha4404, and ha4344. the ha4314 is a 14 lead basic 4 x 1 crosspoint. the ha4404 is a 16 lead device with tally outputs to indicate the selected channel. the ha4344 is a 16 lead crosspoint with synchronized control lines (a0, a1, cs). with synchronization, the control information for the next channel switch can be loaded into the crosspoint without affecting the current state. on a subsequent clock edge the stored control state effects the desired channel switch. - input buffers switch matrix output buffers (hfa1112 or hfa1115) out source3 in0 t0 ha4404 cs t3 in3 en out0 10k ? 75 ? r s HA4600 out in0 t0 ha4404 cs t3 in3 out in0 t0 ha4404 cs t3 in3 out in0 t0 ha4404 cs t3 in3 75 ? out1 75 ? r s r s r s r s x2 + out source0 en 75 ? r s HA4600 out source1 75 ? source2 75 ? out2 75 ? out3 75 ? 10k ? x2 x2 x2 - + - + - + figure 1. 4 x 4 switcher/router application HA4600
3-5 source0 75 ? HA4600 out in0 t0 t3 in3 source3 75 ? source4 75 ? out in3 t0 t3 in0 source7 75 ? r s source8 75 ? r s HA4600 out in0 t0 t3 in3 source11 75 ? source12 75 ? r s out in3 t0 t3 in0 source15 75 ? r s ha4404 75 ? + - x2 out 10k ? 10k ? ha4404 r s r s switching matrix output buffer isolation mux hfa1112 or hfa1115 in2 in1 in2 in1 in2 in1 in2 in1 en en figure 2. 16 x 1 switcher application HA4600
3-6 typical performance curves v supply = 5v, t a = 25 o c, r l = 10k ? , unless otherwise speci?d figure 3. large signal pulse response figure 4. input capacitance vs frequency figure 5. frequency response figure 6. gain flatness figure 7. off isolation 1.0 0.75 0.5 0.25 0 -0.25 -0.5 -0.75 -1.0 output voltage (v) time (5ns/div.) 1 10 100 frequency (mhz) 0.75 0.80 0.85 0.90 0.95 1.0 1.05 1.10 1.15 1.20 1.25 500 input capacitance (pf) 12 9 6 3 0 -3 -6 -9 -12 1 10 100 750 gain (db) frequency (mhz) r s = 36 ? c l = 21pf r s = 82 ? c l = 10pf r s = 43 ? c l = 15pf 0.4 0.3 0.2 0.1 0 -0.1 -0.2 -0.3 -0.4 1 10 100 500 gain (db) frequency (mhz) r s = 36 ? c l = 21pf r s = 82 ? c l = 10pf r s = 43 ? c l = 15pf -50 -60 -70 -80 -90 -100 -110 -120 -130 1 10 100 500 off isolation (db) frequency (mhz) v in = 1v p-p r l = 10 ? pdip, soic pdip, soic sot-23 HA4600
7 all intersil semiconductor products are manufactured, assembled and tested under iso9000 quality systems certi?ation. intersil semiconductor products are sold by description only. intersil corporation reserves the right to make changes in circuit design and/or spec ifications at any time with- out notice. accordingly, the reader is cautioned to verify that data sheets are current before placing orders. information furnished by intersil is b elieved to be accurate and reliable. however, no responsibility is assumed by intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of th ird parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of intersil or its subsidiari es. for information regarding intersil corporation and its products, see web site http://www.intersil.com die characteristics die dimensions: 51 mils x 36 mils x 19 mils 1290 m x 910 m x 483 m metallization: type: metal 1: aicu (1%)/tiw thickness: metal 1: 6k? 0.8k? type: metal 2: aicu (1%) thickness: metal 2: 16k? 1.1k? substrate potential (powered up) : v- passivation: type: nitride thickness: 4k? 0.5k? transistor count: 53 metallization mask layout HA4600 en v- v+ out nc in gnd HA4600
|
