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AS “АLFA RPAR” AS620 Riga, Latvia www.alfarzpp.lv; alfa@alfarzpp.lv Low Cost Low Power Instrumentation Amplifier Block diagram AS620
FEATURES
-Pin-to-pin compatible with industry standard AD620 EASY TO USE -Gain Set with One External Resistor : G= 1 + (49,4 kΩ/RG) (Gain Range 1 to 1000) -Wide Power Supply Range (±2.3 V to ±18 V) -Higher Performance than Three Op Amp IA Designs -Available in 8-Lead SOIC Packaging -Low Power EXCELLENT DC PERFORMANCE (“B GRADE”) -50 µV max, Input Offset Voltage -0.6µV/°C max, Input Offset Drift -0,8 nA max, Input Bias Current -100 dB min Common-Mode Rejection Ratio (G = 10) LOW NOISE -9 nV/Hz 0,5, @ 1 kHz, Input Voltage Noise -0.28 µV p-p Noise (0.1 Hz to 10 Hz)
APPLICATIONS
-Weigh Scales -ECG and Medical Instrumentation -Transducer Interface -Data Acquisition Systems -Industrial Process Controls -Battery Powered and Portable Equipment CONNECTION DIAGRAM DIP-8, SOIC-8 Packages RG -VS +VS RG -IN +IN OUTPUT REF 1 8 AS620 TOP VIEW AS620AR, AS620BR: SOIC-8 AS620AN, AS620BN: DIP-8
Table 1. Vs = ±16.5 V, VREF = 0 V, TA = +25ºC, G = 1, RL = 2 kΩ, unless otherwise noted.
AS “АLFA RPAR” AS620 Riga, Latvia www.alfarzpp.lv; alfa@alfarzpp.lv OUTPUT Output Swing, V Osw1 RL=10 kΩ, Vs=±2,3 V -Vs + 1,1 +Vs - 1,2 -Vs + 1,1 +Vs - 1,2 Overtemperature T = -45ºC to +85ºC -Vs + 1,4 +Vs - 1,3 -Vs + 1,4 +Vs - 1,3 Osw2 RL=10 kΩ, Vs =±4,5 V -Vs + 1,1 +Vs - 1,2 -Vs + 1,1 +Vs - 1,2 Overtemperature T = -45ºC to +85ºC -Vs + 1,4 +Vs - 1,3 -Vs + 1,4 +Vs - 1,3 Osw3 RL=10 kΩ, Vs=±18 V -Vs + 1,2 +Vs - 1,4 -Vs + 1,2 +Vs - 1,4 Overtemperature T = -45ºC to +85ºC -Vs + 1,6 +Vs - 1,5 -Vs + 1,6 +Vs - 1,5 Common-Mode Rejection Ratio DC to 60 Hz with 1 kΩ Source Imbalance G=1 CMRR VCM = 0 V to ± 10 V 73 80 G=10 VCM = 0 V to ± 10 V 93 100 G=100, G=1000 VCM = 0 V to ± 10 V 110 120 NOISE Voltage Noise, 1 kHz Total RTI Noise = √((e²ni)+(eno/G)²) Input Voltage Noise, nV/√Hz eni 13 13 Output Voltage Noise, nV/√Hz eno 100 100 RTI, μV p-p G=1 f = 0,1 Hz to 10 Hz 6,0 6,0 G=10 f = 0,1 Hz to 10 Hz 0,8 0,8 G=100÷1000 f = 0,1 Hz to 10 Hz 0,4 0,4 Slew Rate, V/μs SR 0,75 0,75 POWER SUPPLY Operating Range, V Quiscent Current, mA Icc+, Icc- 1,6 1,6 Overtemperature 1,9 1,9 ¹ ) Does not include effects of external resistor RG. ² ) One input grounded. G= 1.
AS “АLFA RPAR” AS620 Riga, Latvia www.alfarzpp.lv; alfa@alfarzpp.lv SOIC-8 DIP-8