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SGM8651/2/4 sgm8653/5 product description the SGM8651/2/3/4/5 are high precision, low noise, low distortion, rail-to-rail output cmos voltage feedback operational amplifiers offering ease of use and low cost. they have a wide input common-mode voltage range and output voltage swing, running at single-supply voltage from 2.5 v to 5.5 v. despite being low cost, th e SGM8651/2/3/4/5 provide excellent overall performance. they offer wide gain-bandwidth product to 50mhz and a typical low power of 2.3 ma/amplifier. the SGM8651/2/3/4/5?s low distortion and fast settling ma k e them ideal for buffering high speed a/d or d/a converters. the sgm8653/5 has a power-down disable feature that reduces the supply current to 75a/amplifier. these features make the sgm8653/5 ideal for portable and battery-powered applications where size and power are critical. all are specified over the extended ?40c to +125c temperature range. applications data acquisition process control audio processing video processing active filters test equipment cell phone pa control broadband communications a-to-d driver d -to- a driver 50mhz, rail-to-rail output cmos operational amplifier features ? low cost ? rail-to-rail output 2mv typical v os ? gain-bandwidth product: 50mhz ? high slew rate: 66v/s ? settling time to 0.1% with 2v step: 60 ns ? overload recovery time: 25ns ? low noise : 8.7 nv/ hz ? operates on 2.5 v to 5.5v supplies ? input voltage range = ? 0.2 v to + 3.8 v with v s = 5v ? low power 2.3 ma/amplifier typical supply current 75a/amplifier when disabled (sgm8653/5 only) ? small packaging SGM8651 available in sot23-5 and so-8 sgm8652 available in msop-8 and so-8 sgm8653 available in sot23-6 and so-8 sgm8654 available in tssop-16 and so-16 sgm8655 available in msop-10 pin configurations (top view) +v s -in 1 2 3 4 5 out -v s +in SGM8651 sot23-5 -in +in -v s nc (sgm8653 only) 1 2 3 4 5 6 7 8 +v s SGM8651/8653 so-8 nc out disable nc = no connect out a out b +in b +v s 1 2 3 4 5 6 7 8 -in a +in a -v s -in b sgm8652 so-8 / msop-8 out 1 2 3 4 5 6 -v s +in +v s disable -in 8653 sot23-6 sgm8653 1 2 3 4 5 out a -in a +in a -v s +v s -ind +ind sgm8654 tssop-16 / so-16 6 7 89 10 11 12 13 14 15 16 -inb +inb -inc nc nc out b out c +inc out d nc = no connect out a out b +in b +v s 1 2 3 4 5 6 7 8 -in a +in a -v s -in b sgm8655 msop-10 9 10 disable disable shengbang microelectronics co, ltd tel: 86/451/84348461 www.sg-micro.com rev. c
SGM8651/2/3/4/5 electrical characteristics :v s = +5v (at t a = +25 , r l = 600 connected to vs/2, unless otherwise noted) SGM8651/2/3/4/5 typ min/max over temperature parameter condition +25 +25 0 to70 -40 to 85 -40 to 125 units min/ max dynamic performance gain-bandwidth product(gbp) slew rate settling time to 0.1% overload recovery time g = +10 g = +1, 2v output step g = +1, 2 v output step v in q g = +v s 50 66 60 25 mhz v/s ns ns typ typ typ typ noise/distortion performance total harmonic distortion + noise input voltage noise( e n ) input current noise(in) g = +1, f = 1khz, v o = 2vp-p, r l = 600 ? f = 100khz f = 1mhz f = 10khz 16 8.7 % nv/ hz nv/ hz f a/ hz typ typ typ typ dc performance input offset voltage (v os ) input offset voltage drift input bias current i b input offset current i os open-loop gain (a ol ) v o = 0.3 v to 4.7 v, r l = 150 ? v o = 0.2 v to 4.8 v, r l = 1k ? 2 4.5 6 2 80 104 8 75 92 8.9 74 91 9.5 74 91 9.8 73 80 mv v/ pa pa db db max typ typ typ min min input characteristics input common-mode voltage range (v cm ) common-mode rejection ratio (cmrr) v cm = - 0.1 v to + 3.5 v -0.2 to +3.8 80 66 65 65 62 v db typ min output characteristics output voltage swing from rail output current closed-loop output impedance r l = 150 ? r l = 1k ? f 100khz, g = +1 0.12 0.03 127 0.08 100 96 89 82 v v ma ? typ typ min typ power-down disable (sgm8653/5 only) turn-on time turn-off time disable voltage-off disable voltage-on 220 150 0.8 2 ns ns v v typ typ max min power supply operating voltage range quiescent current (per amplifier) supply current when disabled per amplifier (sgm8653/5 only) power supply rejection ratio (psrr) ? vs = + 2.7v to + 5.5v, v cm = (-v s ) + 0.5 2.3 75 80 2.5 5.5 2.9 120 67 2.7 5.5 3.4 127 67 2.7 5.5 3.8 130 65 2.7 5.5 4 137 62 v v ma a db min max max max min specifications subject to change without notice.
SGM8651/2/3/4/5 package/ordering information model channel order number package description package option marking information SGM8651xn5/tr sot23-5 tape and reel, 3000 8651 SGM8651 single SGM8651xs/tr so-8 tape and reel, 2500 SGM8651xs sgm8652xms/tr msop-8 tape and reel, 3000 sgm8652xms sgm8652 dual sgm8652xs/tr so-8 tape and reel, 2500 sgm8652xs sgm8653xn6/tr sot23-6 tape and reel, 3000 8653 sgm8653 single with shutdown sgm8653xs/tr so-8 tape and reel, 2500 sgm8653xs sgm8654xs/tr so-16 tape and reel, 2500 sgm8654xs sgm8654 quad sgm8654xts tssop-16 tape and reel, 3000 sgm8654xts sgm8655 dual with shutdown sgm8655xms/tr msop-10 tape and reel, 3000 sgm8655xms absolute maximum ratings supply voltage, v+ to v- ......................................... 7.5 v common-mode input voltage ...................................... (?v s ) ? 0.5 v to (+v s ) +0.5v storage temperature range..................?6 5 to +150 junction temperature ..............................................160 operating temperature range............ ?55 to +150 package thermal resistance @ t a = 25 sot23-5, ja ......................................................... 190 /w sot23-6, ja ......................................................... 190 /w so-8, ja ..................................................................125 /w msop-8, ja .......................................................... 216 /w msop-10, ja ........................................................ 216 /w so-16, ja ................................................................ 82 /w tssop-16, ja ....................................................... 105 /w lead temperature range (soldering 10 sec) ..................................................... 260 esd susceptibility hbm...........................................................................1000v mm.......................... ................ ...................... ...............400v notes 1. stresses above those listed under absolute maximum ratings may cause permanent damage to the device. this is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. caution this integrated circuit can be damaged by esd. shengbang micro-electronics recommends that all integrated circuits be handled with appropriate precautions. failure to observe proper handling and installation procedures can cause damage. esd damage can range from subtle performance degradation to complete device failure. precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
SGM8651/2/3/4/5 typical performance characteristics at t a = +25 , v s = +5v, g = +2, r f = 887 , r g = 887 , c l = 47pf ,and r l = 600 , unless otherwise noted. closed-loop gain vs.frequency -40 -20 0 20 40 60 0.01 0.1 1 10 100 1000 frequency(mhz) closed-loop gain(db) v s = 5v r l = 600 c l = 47pf g = +1 g = +10 g = +100 capacitive load vs.frequency -15 -12 -9 -6 -3 0 3 6 0.1 1 10 100 1000 frequency(mhz) normalized gain(db) vo = 0.1v p-p c l = 20pf c l = 30pf c l = 47pf c l = 100pf g = +1 r f = 887 r g =887 sgm8653 + - r s c l v in vo r l =600 v+ v- (r l is optional) output impedance vs.frequency 0 4 8 12 16 20 0.1 1 10 100 1000 10000 frequency(khz) output impedance( ) g = +1 g = +100 g = +10 small signal overshoot vs.load capacitance 0 5 10 15 20 25 30 0 10203040506070 capacitance(pf) small signal overshoot(%) vo = 0.2v p-p +overshoot -overshoot g = + 1 large signal step response time(100 s/div) output voltage(500mv/div) vs = 5v c l = 47pf v in = 2v g = +1 small signal step response time(400ns/div) output voltage(50mv/div) vs = 5v c l = 47pf v in = 200mv g = +1
SGM8651/2/3/4/5 typical performance characteristics at t a = +25 , v s = +5v, g = +2, r f = 887 , r g = 887 , c l = 47pf ,and r l = 600 , unless otherwise noted. cmrr and psrr vs.frequency 0 20 40 60 80 100 0.01 0.1 1 10 100 frequency(mhz) cmrr,psrr(db) cmrr psrr input voltage noise spectral density vs.frequency 1 10 100 1000 0.01 0.1 1 10 100 1000 frequency(khz) voltage noise(nv/ overload recovery time time(25ns/div) vs = 2.5v v in = 1.77v g = +2 2.5v 1.77v 0v large-signal disable/enable response time(200ns/div) output voltage(1v/div) vs = 2.5v f in = 5mhz g = +2 v out = 2.4v maximum output voltage vs.frequency 0 1 2 3 4 5 6 0.1 1 10 100 frequency(mhz) output voltage(vp-p) vs = 5.5v maximum output voltage without slew-rate induced distortion vs = 2.7v cmrr and psrr vs.temperature 60 70 80 90 100 110 120 -50 -30 -10 10 30 50 70 90 110 130 temperature() cmrr,psrr(db) cmrr psrr r l = 150
SGM8651/2/3/4/5 typical performance characteristics at t a = +25 , v s = +5v, g = +2, r f = 887 , r g = 887 , and r l = 150 connected to vs/2,unless otherwise noted. open-loop gain vs.temperature 70 80 90 100 110 120 -50 -30 -10 10 30 50 70 90 110 130 temperature() openCloop gain(db) r l = 150 r l = 1k shutdown current vs.temperature 40 45 50 55 60 65 70 75 80 -50 -30 -10 10 30 50 70 90 110 130 temperature() shutdown current( a) v s = 5v v s = 3v v s = 2.7v supply current vs.temperature 1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.6 2.8 3 -50 -30 -10 10 30 50 70 90 110 130 temperature() supply current(ma) v s = 5v v s = 3v v s = 2.7v output voltage swing vs.output current 0 1 2 3 0 20 40 60 80 100 120 output current(ma) output voltage(v) 25 135 -50 25 135 -50 v s = 3v sourcing current sinking current output voltage swing vs.output current 0 1 2 3 4 5 0 255075100125150 output current(ma) output voltage(v) 25 135 -50 25 135 -50 v s = 5v sourcing current sinking current channel separation vs.frequency -120 -110 -100 -90 -80 -70 -60 -50 -40 0.001 0.01 0.1 1 10 100 frequency(mhz) channel separation(db)
SGM8651/2/3/4/5 typical performance characteristics at t a = +25 , v s = +5v, g = +2, r f = 887 , r g = 887 , and r l = 150 connected to vs/2,unless otherwise noted. offset voltage production distribution 0 3 6 9 12 15 18 21 24 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 offset voltage(mv) percent of amplifiers(%) typical production distribution of packaged units.
SGM8651/2/3/4/5 application notes driving capacitive loads the sgm865x can directly drive 47pf in unity-gain without oscillation. the unity-gain follower (buffer) is the most sensitive configuration to capacitive loading. direct capacitive loading reduces the phase margin of amplifiers and this results in ringing or even oscillation. applications that require greater capacitive drive capability should use an isolation resistor between the output and the capacitive load like the circuit in figure 1. the isolation resistor r iso and the load capacitor c l form a zero to increase stability. the bigger the r iso resistor value, the more stable v out will be. note that this method results in a loss of gain accuracy because r iso forms a voltage divider with the r load . v in v out SGM8651 c l r iso figure 1. indirectly driving heavy capacitive load an improvement circuit is shown in figure 2. it provides dc accuracy as well as ac stability. r f provides the dc accuracy by connecting the inverting signal with the output. c f and r iso serve to counteract the loss of phase margin by feeding the high frequency component of the output signal back to the amplifier?s inverting input, thereby preserving phase margin in the overall feedback loop. v in v out SGM8651 c l r iso r l r f c f figure 2. indirectly driving heavy capacitive load with dc accuracy for no-buffer configuration, there are two others ways to increase the phase margin: (a) by increasing the amplifier?s gain or (b) by placing a capacitor in parallel with the feedback resistor to counteract the parasitic capacitance associated with inverting node. power-supply bypassing and layout the sgm865x family operates fr om either a single +2.7v to +5.5v supply or dual 1.35v to 2.75v supplies. for single-supply operation, bypass the power supply v dd with a 0.1 f ceramic capacitor which should be placed close to the v dd pin. for dual-supply operation, both the v dd and the v ss supplies should be bypassed to ground with separate 0.1 f ceramic capacitors. 2.2 f tantalum capacitor can be added for better performance. good pc board layout techniques optimize performance by decreasing the amount of stray capacitance at the op amp?s inputs and output. to decrease stray capacitance, minimize trace lengths and widths by placing external components as close to the device as possible. use surface-mount components whenever possible. for the high speed operational amplifier, soldering the part to the board directly is strongly recommended. try to keep the high frequency big current loop area small to minimize the emi (electromagnetic interfacing). SGM8651 v dd vn vp v ss v out 10 f 0.1 f 10 f 0.1 f SGM8651 vn vp v dd v ss (gnd) v out 10 f 0.1 f figure 3. amplifier with bypass capacitors grounding a ground plane layer is important for high speed circuit design. the length of the current path speed currents in an inductive ground return will create an un wanted voltage noise. broad ground plane areas will reduce the parasitic inductance. input-to-output coupling to minimize capacitive coupling, the input and output signal traces should not be parallel. this helps reduce unwanted positive feedback.
SGM8651/2/3/4/5 typical application circuits differential amplifier the circuit shown in figure 4 performs the difference function. if the resistors ratios are equal ( r4 / r3 = r2 / r1 ), then v out = ( vp ? vn ) r 2 / r 1 + vref. vn vp v out SGM8651 vref r1 r2 r3 r4 figure 4. differential amplifier instrumentation amplifier the circuit in figure 5 performs the same function as that in figure 4 but with the high input impedance. vn vp SGM8651 vref r1 r2 r3 r4 v out SGM8651 SGM8651 figure 5. instrumentation amplifier low pass active filter the low pass filter shown in figure 6 has a dc gain of (-r 2 /r 1 ) and the ?3db corner frequency is 1/2 r 2 c. make sure the filter is within the bandwidth of the am plifier. the large values of feedback resistors can couple with parasitic capacitance and cause undesired effects such as ringing or oscillation in high-speed amplifiers. keep resistors value as low as possible and consistent with output loading consideration. v in v out SGM8651 r1 r2 r3 = r1 // r2 c figure 6. low pass active filter driving video the sgm865x can be used in video applications like in figure 7 . v in SGM8651 r g r f 75 75 cable v out 75 g = 1 + r f / r g figure 7. typical video driving
SGM8651/2/3/4/5 package outline dimensions sot23-5 d e1 b a2 a a1 e l l c e1 0 0.20 e dimensions in millimeters dimensions in inches symbol min max min max a 1.050 1.250 0.041 0.049 a1 0.000 0.100 0.000 0.004 a2 1.050 1.150 0.041 0.045 b 0.300 0.400 0.012 0.016 c 0.100 0.200 0.004 0.008 d 2.820 3.020 0.111 0.119 e 1.500 1.700 0.059 0.067 e1 2.650 2.950 0.104 0.116 e 0.950typ 0.037typ e1 1.800 2.000 0.071 0.079 l 0.700ref 0.028ref l1 0.300 0.600 0.012 0.024 0 8 0 8
SGM8651/2/3/4/5 package outline dimensions sot23-6 d e1 e b a2 a a1 e l l c e1 0 0.20 dimensions in millimeters dimensions in inches symbol min max min max a 1.050 1.250 0.041 0.049 a1 0.000 0.100 0.000 0.004 a2 1.050 1.150 0.041 0.045 b 0.300 0.400 0.012 0.016 c 0.100 0.200 0.004 0.008 d 2.820 3.020 0.111 0.119 e 1.500 1.700 0.059 0.067 e1 2.650 2.950 0.104 0.116 e 0.950typ 0.037typ e1 1.800 2.000 0.071 0.079 l 0.700ref 0.028ref l1 0.300 0.600 0.012 0.024 0 8 0 8
SGM8651/2/3/4/5 package outline dimensions so-8 c l d e e e1 a2 b a a1 dimensions in millimeters dimensions in inches symbol min max min max a 1.350 1.750 0.053 0.069 a1 0.100 0.250 0.004 0.010 a2 1.350 1.550 0.053 0.061 b 0.330 0.510 0.013 0.020 c 0.190 0.250 0.007 0.010 d 4.780 5.000 0.188 0.197 e 3.800 4.000 0.150 0.157 e1 5.800 6.300 0.228 0.248 e 1.270typ 0.050typ l 0.400 1.270 0.016 0.050 0 8 0 8
SGM8651/2/3/4/5 package outline dimensions msop-8 c l d e e1 a1 e b a2 a dimensions in millimeters dimensions in inches symbol min max min max a 0.800 1.200 0.031 0.047 a1 0.000 0.200 0.000 0.008 a2 0.760 0.970 0.030 0.038 b 0.30 typ 0.012 typ c 0.15 typ 0.006 typ d 2.900 3.100 0.114 0.122 e 0.65 typ 0.026 typ e 2.900 3.100 0.114 0.122 e1 4.700 5.100 0.185 0.201 l 0.410 0.650 0.016 0.026 0 6 0 6
SGM8651/2/3/4/5 package outline dimensions msop-10 c l d e e1 a1 e b a2 a dimensions in millimeters dimensions in inches symbol min max min max a 0.800 1.200 0.031 0.047 a1 0.000 0.200 0.000 0.008 a2 0.760 0.970 0.030 0.038 b 0.30 typ 0.012 typ c 0.152 typ 0.006 typ d 2.900 3.100 0.114 0.122 e 0.50 typ 0.020 typ e 2.900 3.100 0.114 0.122 e1 4.700 5.100 0.185 0.201 l 0.410 0.650 0.016 0.026 0 6 0 6
SGM8651/2/3/4/5 package outline dimensions so-16 c l d e e e1 b a a1 a2 dimensions in millimeters dimensions in inches symbol min max min max a 1.350 1.750 0.053 0.069 a1 0.100 0.250 0.004 0.010 a2 1.350 1.550 0.053 0.061 b 0.330 0.510 0.013 0.020 c 0.170 0.250 0.007 0.010 d 9.800 10.20 0.386 0.402 e 3.800 4.000 0.150 0.157 e1 5.800 6.200 0.228 0.244 e 1.270 (bsc) 0.050 (bsc) l 0.400 1.270 0.016 0.050 0 8 0 8
SGM8651/2/3/4/5 package outline dimensions tssop-16 d e e1 e b a2 a pin #1 ident. a a1 l h c a dimensions in millimeters dimensions in inches symbol min max min max d 4.900 5.100 0.193 0.201 e 4.300 4.500 0.169 0.177 b 0.190 0.300 0.007 0.012 c 0.090 0.200 0.004 0.008 e1 6.250 6.550 0.246 0.258 a 1.100 0.043 a2 0.800 1.000 0.031 0.039 a1 0.020 0.150 0.001 0.006 e 0.65 (bsc) 0.026 (bsc) l 0.500 0.700 0.020 0.028 h 0.25(typ) 0.01(typ) 1 7 1 7
SGM8651/2/3/4/5 revision history location page 9/05? data sheet changed from rev.a to rev.b added sgm8655 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . universal changes to product description, features, and pin configurations . . . . . . . . . . . . . . . . . . . . . . . . . . 1 changes to electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 updated package/ordering information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 11/06? data sheet changed from rev. b to rev. c changes to absolute maximum atings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 shengbang microelectronics co, ltd unit 3, chuangye plaza no.5, taihu northern street, yingbin road centralized industrial park harbin development zone harbin, heilongjiang 150078 p.r. china tel.: 86-451-84348461 fax: 86-451-84308461 www.sg-micro.com

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