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sgm862 1/2/ 3 /4 3mhz, rail -to - rail i/o cmos operational amplifier s product description the SGM8621 ( single), sgm8622 ( dual), sgm8623 ( single with shutdown) and sgm8624 ( quad) are low noise, low voltage, and low power operational amplifiers, that can be designed into a wide range of applications. the SGM8621/2/3 /4 have a high gain - bandwidth product of 3 mhz and a slew rate of 1 . 7 v/s. the sgm8623 has a power - down disable feature that reduces the supply current to less than 1 a . the SGM8621/2/3 /4 are designed to provide optimal performance in low voltage and low noise systems. they provide rail - to - rail output swing int o heavy load s. the input common mode voltage range includes ground, and the maximum input offset voltage is 3 mv for SGM8621/2/3 /4 . they are specified over the extended industrial temperature range ( - 40 to +125 ). the operating supply range is from 2v to 5.5v. the si ngle version, SGM8621 is available in green sc70 - 5, sot - 23 - 5 and so ic - 8 package s . sgm 86 23 is available in green sot - 23- 6 and soic - 8 packages. the d ual version sgm8622 is available in green so ic - 8 and msop - 8 packages. the quad version sgm8624 is available i n green so ic - 1 4 and tssop - 1 4 packages . features ? rail - to - rail i nput and o utput 3mv maximum v os ? high gain - bandwidth product: 3 mhz ? high slew rate: 1 . 7 v/ s ? settling time to 0.1% with 2v step: 0.5 s ? overload recovery time: 2.3 s ? low noise : 1 7.5 nv/ hz at 1khz ? suppl y voltage range: 2v to 5.5v ? input voltage range : - 0.1v to +5.6 v with v s = 5.5 v ? low supply current SGM8621/3: 270a (typ) sgm86 22/4: 2 1 0 a/amplifier (typ) l ess than 1a shutdown current for sgm8623 ? small packaging SGM8621 available in green sc70 - 5, sot - 23 - 5 and so ic - 8 sgm8622 available in green msop - 8 and so ic - 8 sgm8623 available in green sot - 23 - 6 and so ic - 8 sgm862 4 available in g reen tssop - 1 4 and so ic - 1 4 applications sensors audio active filters a/d converters communications test equipment cellular and cordless phones laptops and pdas photodiode amplification battery - powered instrumentation rev. c sg micro corp www.sg - micro.com
3mhz, rail - to - rail i/o SGM8621/2/3/4 cmos operational amplifiers package/ordering information m odel package description specified temperature range ordering number package marking packing option sgm 8621 sc70 - 5 -40 to +125 SGM8621xc5/tr 8621 tape and reel, 3000 sot -23-5 -40 to +125 SGM8621xn5/tr 8621 tape and reel, 3000 so ic -8 -40 to +125 SGM8621xs/tr SGM8621xs xxxxx tape and reel, 2500 sgm 8622 msop -8 -40 to +125 sgm8622xms/tr sgm8622 xms xxxxx tape and reel, 3000 so ic -8 -40 to +125 sgm8622xs/tr sgm8622xs xxxxx tape and reel, 2500 sgm 8623 sot -23-6 -40 to +125 sgm8623xn6/tr 8623 tape and reel, 3000 so ic -8 -40 to +125 sgm8623xs/tr sgm8623xs xxxxx tape and reel, 2500 sgm 8624 so ic -1 4 -40 to +125 sgm8624xs 14 /tr sgm8624xs14 xxxxx tape and reel, 2500 tssop -1 4 -40 to +125 sgm8624xts 14 /tr sgm8624 xts14 xxxxx tape and reel, 3000 note: x xxxx = date c ode and vendor code. green (rohs & hsf): sg micro corp defines "green" to mean pb - free (rohs comp atible) and free of halogen substances. if you have additional comments or questions, please contact your sgmicro representative directly. absolute maximum ratings supply voltage, + v s to -v s ................................................ 6 v input common mode voltage range .................................................... (-v s ) - 0. 3 v to (+v s ) + 0. 3 v storage temperature range ........................ -65 to +150 junction temperature ................................................. + 1 5 0 package thermal resistance @ t a = + 25 sc70 - 5, ja .............................................................. 333 /w sot -23- 5, ja .......................................................... 190 /w sot -23- 6, ja .......................................................... 190 /w so ic - 8, ja .............................................................. 125 /w msop - 8, ja ............................................................ 216 /w lead temperature (soldering 10 sec) .................................................................................... + 260 esd susceptibility hbm (SGM8621/2/4) ................................................... 8 0 00v hbm (sgm8623) ......................................................... 40 00v mm ................................................................................. 400v cdm ............................................................................ 1000v recommended operating conditions operating temperature range ..................... -4 0 to + 1 25 overstress caution stresses beyond those listed may cause permanent damage to the device. functional operation of the device at these or any other conditions beyond those indicated in the operational section of the specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect reliability. esd sensitivity caution this integrated circuit can be damaged by esd if you dont pay attention to esd protection. sgmicro 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 fro m 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. disclaimer sg micro corp re serves the right to make any change in circuit design, specification or other related things if necessary without notice at any time. sg micro corp www.sg - micro.com 2
3mhz, rail - to - rail i/o SGM8621/2/3/4 cmos operational amplifiers pin configurations sgm 8621 (top view) sgm86 21/ 86 23 (top view) + v s - in 3 4 5 1 2 out - v s + in ( sgm 8623 only ) - in + in - v s nc 5 6 7 8 1 2 3 4 + v s nc out disable nc = no connect sc70 - 5/sot -23-5 soic -8 sgm 86 23 (top view) sgm 86 22 (top view) out 3 4 5 6 1 2 - v s + in + v s disable - in outb + v s + inb outa 5 6 7 8 1 2 3 4 - ina - v s - inb sot - 23 - 6 soic - 8/msop - 8 sgm 862 4 (top view) 10 11 12 13 14 1 2 3 4 5 outa - ina + ina - v s + v s - ind + ind 6 7 9 8 - inb + inb - inc outb outc + inc outd tssop - 14/soic -14 sg micro corp www.sg - micro.com 3
3mhz, rail - to - rail i/o SGM8621/2/3/4 cmos operational amplifiers electrical characteristics (at t a = +25 , v s = +5v , v cm = v s /2, r l = 600, unless otherwise noted . ) parameter conditions SGM8621/2/3/4 typ min/max over temperature +25 input offset voltage (v os ) 0.9 3 3.2 3.4 mv max inpu t bias current (i b ) 1 pa typ input offset current (i os ) 1 pa typ input common mode voltage range (v cm ) v s = 5.5v - 0.1 to +5.6 v typ common mode rejection ratio (cmrr) v s = 5.5v, v cm = - 0.1v to 4v 82 65 64 63 db min v s = 5.5v, v cm = - 0.1v to 5.6v 71 62 61 60 db min open - loop voltage gain (a ol ) r l = 600, v o = 0.15v to 4.85v 90 80 75 68 db min r l = 10k , v o = 0.05v to 4.95v 100 89 85 83 db min input offset voltage drift (v os /t) 2.7 v/ typ output characteristics output voltage swing from rail r l = 600 0.081 v typ r l = 10k 0.007 v typ output current (i out ) 52 38 28 24 ma min closed - loop output impedance f = 100k hz,g = 1 10.8 typ power - do w n disable (sgm8623 only) turn - on time 1.3 s typ turn - off time 0.3 s typ disable voltage - off 0.8 v max disable voltage - on 2 v min power supply operating voltage range 2 2 2 2 v min 5.5 5.5 5.5 5.5 v max power supply rejection ratio (psrr) v s = +2v to +5.5v, v cm = ( - v s ) + 0.5v 85 68 66 65 db min quiescent current/ amplifier (i q ) sgm8 622/4 i out = 0 210 300 340 360 a max SGM8621/3 i out = 0 270 370 420 450 a max supply current when disabled (sgm8623 only) 0.47 8 9 10 a max dynamic performance gain - bandwidth product (gbp) 3 mhz typ phase margin ( o ) 73 typ full power bandwidth (bw p ) <1% distortion 50 khz typ slew rate (sr) g= 1,2v output step 1.7 v/ s typ settling time to 0.1% (t s ) g= 1,2v output step 0.5 s typ overload recovery time v in gain = v s 2.3 s typ noise performance voltage noise density (e n ) f = 1khz 17.5 nv/ hz typ sg micro corp www.sg - micro.com 4
3mhz, rail - to - rail i/o SGM8621/2/3/4 cmos operational amplifiers typical performance characteristics at t a = +25 , v cm = v s /2, r l = 600, unless otherwise noted . cmrr vs. frequency psrr vs. frequency 0 20 40 60 80 100 120 0.01 0.1 1 10 100 1000 frequency (khz) cmrr (db) v s = 5v 0 20 40 60 80 100 1 10 100 1000 frequency (khz) psrr (db) psrr+ psrr- v s = 5v channel separation vs. frequency channel separation vs. freuency 0 30 60 90 120 150 0.1 1 10 100 1000 freuency (khz) channel separation (db) v s = 2 v r l = 620 t a = + 25 g = 1 channel b to a channel a to b 0 30 60 90 120 150 0.1 1 10 100 1000 frequency (khz) channel separation (db) v s = 5 v r l = 620 t a = + 25 g = 1 channel b to a channel a to b closed - loop output voltage swing closed - loop output voltage swing 0.0 0.5 1.0 1.5 2.0 2.5 10 100 1000 10000 frequency (khz) output voltage (v p-p ) v s = 2v v in = 2v p-p t a = + 25 r l = 10k g = 1 0 1 2 3 4 5 6 10 100 1000 10000 frequency (khz) output voltage (v p-p ) v s = 5v v in = 4.9v p-p t a = + 25 r l = 10k g = 1 sg micro corp www.sg - micro.com 5
3mhz, rail - to - rail i/o SGM8621/2/3/4 cmos operational amplifiers typical performance characteristics at t a = +25 , v cm = v s /2, r l = 600, unless otherwise noted . small - signal overshoot vs. load capacitance small - signal overshoot vs. load capacitance 0 10 20 30 40 50 60 10 100 1000 10000 load capacitance (pf) small-signal overshoot (%) v s = 2v r l = 10k t a = + 25 g = 1 0 10 20 30 40 50 60 10 100 1000 10000 load capacitance (pf) small-signal overshoot (%) v s = 5 v r l = 10k t a = + 25 g = 1 output impedance vs. frequency output impedance vs. freuency 0 20 40 60 80 100 1 10 100 1000 10000 freuency (khz) output impedance () output impedance () time (100s/div) = 620 v s = 2v time (100s/div) = 620 v s = 5v sg micro corp www.sg - micro.com 6
3mhz, rail - to - rail i/o SGM8621/2/3/4 cmos operational amplifiers typical performance characteristics at t a = +25 , v cm = v s /2, r l = 600, unless otherwise noted . small - signal step response small - signal step response time (100s/div) = 620 v s = 2v time (100s/div) = 620 v s = 5v positive overload recovery neg ative overload recovery time (2s/div) = 620 g = -100 1v/div 0v 50mv/div 0v v in v out time (2s/div) = 620 g = -100 0v 50mv/div 0v v in v out 1v/div sup ply current vs. temperature shutdown current vs. temperature 0.15 0.18 0.21 0.24 0.27 0.3 -50 -25 0 25 50 75 100 125 temperature ( ) supply current (ma) v s = 3v v s = 2v v s = 5v 0 150 300 450 600 750 -50 -25 0 25 50 75 100 125 temperature ( ) shutdown current (na) v s = 5v v s = 3 v v s = 2v sg micro corp www.sg - micro.com 7
3mhz, rail - to - rail i/o SGM8621/2/3/4 cmos operational amplifiers typical performance characteristics at t a = +25 , v cm = v s /2, r l = 600, unle ss otherwise noted . cmrr vs. temperature psrr vs. temperature 50 60 70 80 90 100 110 -50 -25 0 25 50 75 100 125 temperature ( ) cmrr (db) v cm = -0.1v to 4v v s = 5.5v v cm = -0.1v to 5.6v 60 70 80 90 100 110 120 -50 -25 0 25 50 75 100 125 temperature ( ) psrr (db) v s = 2v to 5.5v open - loop voltage gain vs. temperature open - loop voltage gain vs. tempe rature 70 80 90 100 110 120 -50 -25 0 25 50 75 100 125 temperature ( ) openCloop voltage gain (db) v s = 5v r l = 10k ) openCloop voltage gain (db) v s = 5v r l = 600 sg micro corp www.sg - micro.com 8
3mhz, rail - to - rail i/o SGM8621/2/3/4 cmos operational amplifiers typical performance characteristics at t a = +25 , v cm = v s /2, r l = 600, un less otherwise noted. input voltage noise spectral density vs. frequency offset voltage production distribution 1 10 100 1000 10 100 1000 10000 frequency (hz) voltage noise (nv/ hz) v s = 5v 0 5 10 15 20 25 30 35 40 -4 -3 -2 -1 0 1 2 3 4 offset voltage (mv) percentage of amplifiers (%) 25800 samples 1 production lot v s = 5v sg micro corp www.sg - micro.com 9
3mhz, rail - to - rail i/o SGM8621/2/3/4 cmos operational amplifiers application notes driving capacitive loads the sgm862 1/2/3/4 can directly drive 1000pf in unity - gain without oscillation. the unity - gain follower (buffer) is the most sen sitive 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 driv ing capability should use an isolation resistor b etween 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 sgm 8621 c l r iso figure 1 . indirectly driving heavy capacitive load an improve d 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 input 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 amplifiers inverting input, thereby preserving phase margin in the overall feedback loop. v in v out sgm 8621 c l r iso r l r f c f figure 2 . indirectly driving heavy capacitive load with dc accuracy for no n - buffer con figuration, there are two other ways to increase the phase margin: (a) by increasing the amplifiers closed - loop 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 sgm862 1/2/3/4 operate from either a single +2 v to +5.5v supply or dual 1 v to 2.75v supplies. for single - supply operation, bypass the p ower supply + v s with a 0.1f ceramic capacitor which should be placed close to the + v s pin. for dual - supply operation, both the + v s and the - v s supplies should be bypassed to ground with separate 0.1f ceramic capacitors. 2.2f tantalum capacitor can be ad ded for better performance. good pc board layout techniques optimize performance by decreasing the amount of stray capacitance at the op amps inputs and output. to decrease stray capacitance, minimize trace lengths and widths by placing external componen ts as close to the device as possible. use surface - mount components whenever possible. for the operational amplifier, soldering the part to the board directly is strongly recommended. try to keep the high frequency current loop area small to minimize the emi (electromagnetic interfacing). sgm 8621 + v s v n v p - v s v out 10 f 0 . 1 f 10 f 0 . 1 f sgm 8621 v n v p + v s - v s ( gnd) v out 10 f 0 . 1 f figure 3 . amplifie r with bypass capacitors grounding a ground plane layer is important for sgm862 1/2/3/4 circuit design. the length of the current path in an inductive ground return will create an unwanted voltage noise. broad ground plane areas will reduce the parasitic i nductance. input - to - output coupling to minimize capacitive coupling, the input and output signal traces should not be in parallel. this helps reduce unwanted positive feedback. sg micro corp www.sg - micro.com 10
3mhz, rail - to - rail i/o SGM8621/2/3/4 cmos operational amplifiers typical application circuits differential amplifier the circuit shown in figure 4 performs the difference function. if th e resistor ratios are equ al ( r 4 / r 3 = r 2 / r 1 ), then v out = (v p - v n ) r 2 / r 1 + v ref . v n v p v out sgm 8621 v ref r 1 r 2 r 3 r 4 figure 4 . differential amplifier instrumentation amplifier the circuit in figure 5 performs t he same function as that in figure 4 but with a high input impedance. v n v p sgm 8621 v ref r 1 r 2 r 3 r 4 v out sgm 8621 sgm 8621 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 bandwidth is within the b andwidth of the amplifier. the l arge values of feedback resistors can couple with parasitic capacitance and cause undesired effects such as ringing or oscillation in high - speed amplifiers. keep resi stor value s as low as possible and consistent with output loading consideration. v in v out sgm 8621 r 1 r 2 r 3 = r 1 // r 2 c figure 6 . low - pass active filter sg micro corp www.sg - micro.com 11
package information sg micro corp www.sg-micro.com tx00043.000 package outline dimensions sc70-5 e e1 e1 e d b a a2 a1 l c 0.20 l1 recommended land pattern (unit: mm) 1.9 0.65 1.3 0.75 0.4 dimensions in millimeters dimensions in inches symbol min max min max a 0.900 1.100 0.035 0.043 a1 0.000 0.100 0.000 0.004 a2 0.900 1.000 0.035 0.039 b 0.150 0.350 0.006 0.014 c 0.080 0.150 0.003 0.006 d 2.000 2.200 0.079 0.087 e 1.150 1.350 0.045 0.053 e1 2.150 2.450 0.085 0.096 e 0.65 typ 0.026 typ e1 1.300 bsc 0.051 bsc l 0.525 ref 0.021 ref l1 0.260 0.460 0.010 0.018 0 8 0 8
package information sg micro corp www.sg-micro.com tx00033.000 package outline dimensions sot-23-5 e e1 e e1 b d a1 a2 a c l 0.2 recommended land pattern (unit: mm) 1.90 2.59 0.99 0.69 0.95 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 0.500 0.012 0.020 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 0.950 bsc 0.037 bsc e1 1.900 bsc 0.075 bsc l 0.300 0.600 0.012 0.024 0 8 0 8
package information sg micro corp www.sg-micro.com tx00010.000 package outline dimensions soic-8 d e e1 e b a a2 a1 c l 1.27 0.6 2.2 5.2 recommended land pattern (unit: mm) 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 0.006 0.010 d 4.700 5.100 0.185 0.200 e 3.800 4.000 0.150 0.157 e1 5.800 6.200 0.228 0.244 e 1.27 bsc 0.050 bsc l 0.400 1.270 0.016 0.050 0 8 0 8
package information sg micro corp www.sg-micro.com tx00014.000 package outline dimensions msop-8 e1 e e d a1 l c a a2 b recommended land pattern (unit: mm) 1.02 0.41 0.65 4.8 dimensions in millimeters dimensions in inches symbol min max min max a 0.820 1.100 0.032 0.043 a1 0.020 0.150 0.001 0.006 a2 0.750 0.950 0.030 0.037 b 0.250 0.380 0.010 0.015 c 0.090 0.230 0.004 0.009 d 2.900 3.100 0.114 0.122 e 2.900 3.100 0.114 0.122 e1 4.750 5.050 0.187 0.199 e 0.650 bsc 0.026 bsc l 0.400 0.800 0.016 0.031 0 6 0 6
package information sg micro corp www.sg-micro.com tx00034.000 package outline dimensions sot-23-6 e e1 e e1 b d a1 a2 a c l 0.2 2.59 0.99 0.95 0.69 recommended land pattern (unit: mm) 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 0.500 0.012 0.020 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 0.950 bsc 0.037 bsc e1 1.900 bsc 0.075 bsc l 0.300 0.600 0.012 0.024 0 8 0 8
package information sg micro corp www.sg-micro.com tx00019.001 package outline dimensions tssop-14 e e1 d b a a1 a2 l c h e recommended land pattern (unit: mm) 5.94 0.42 1.78 0.65 dimensions in millimeters dimensions in inches symbol min max min max a 1.200 0.047 a1 0.050 0.150 0.002 0.006 a2 0.800 1.050 0.031 0.041 b 0.190 0.300 0.007 0.012 c 0.090 0.200 0.004 0.008 d 4.860 5.100 0.191 0.201 e 4.300 4.500 0.169 0.177 e1 6.250 6.550 0.246 0.258 e 0.650 bsc 0.026 bsc l 0.500 0.700 0.02 0.028 h 0.25 typ 0.01 typ 1 7 1 7
package information sg micro corp www.sg-micro.com tx00011.001 package outline dimensions soic-14 recommended land pattern (unit: mm) d e1 e l1 l2 a3 a a2 5.2 1.27 0.6 2.2 e b a1 l h h r r1 dimensions in millimeters dimensions in inches symbol min max min max a 1.35 1.75 0.053 0.069 a1 0.10 0.25 0.004 0.010 a2 1.25 1.65 0.049 0.065 a3 0.55 0.75 0.022 0.030 b 0.36 0.49 0.014 0.019 d 8.53 8.73 0.336 0.344 e 5.80 6.20 0.228 0.244 e1 3.80 4.00 0.150 0.157 e 1.27 bsc 0.050 bsc l 0.45 0.80 0.018 0.032 l1 1.04 ref 0.040 ref l2 0.25 bsc 0.01 bsc r 0.07 0.003 r1 0.07 0.003 h 0.30 0.50 0.012 0.020 0 8 0 8
package information sg micro corp www.sg-micro.com tx10000.000 tape and reel information note: the picture is only for reference. pl ease make the object as the standard. key parameter list of tape and reel package type reel diameter reel width w1 (mm) a0 (mm) b0 (mm) k0 (mm) p0 (mm) p1 (mm) p2 (mm) w (mm) pin1 quadrant sc70-5 7 9.5 2.25 2.55 1.20 4. 0 4.0 2.0 8.0 q3 sot-23-5 7 9.5 3.2 3.2 1.4 4. 0 4.0 2.0 8.0 q3 sot-23-6 7 9.5 3.17 3.23 1.37 4. 0 4.0 2.0 8.0 q3 soic-8 13 12.4 6.4 5.4 2.1 4. 0 8.0 2.0 12.0 q1 msop-8 13 12.4 5.2 3.3 1.5 4. 0 8.0 2.0 12.0 q1 tssop-14 13 12.4 6.95 5.6 1.2 4. 0 8.0 2.0 12.0 q1 soic-14 13 16.4 6.6 9.3 2.1 4. 0 8.0 2.0 16.0 q1 dd0001 reel width (w1) reel diameter reel dimensions tape dimensions direction of feed p2 p0 w p1 a0 k0 b0 q1 q2 q4 q3 q3 q4 q2 q1 q3 q4 q2 q1
package information sg micro corp www.sg-micro.com tx20000.000 carton box dimensions note: the picture is only for reference. pl ease make the object as the standard. key parameter list of carton box reel type length (mm) width (mm) height (mm) pizza/carton 7 (option) 368 227 224 8 7 442 410 224 18 13 386 280 370 5 dd0002

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