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INA149AID INA240A2PW INA826AID Differential Amplifier sop
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FEATURES
Common-Mode Voltage Range: +275 VMinimum CMRR: 90 dB from -40C to
+125C
DC Specifications:
Maximum Offset Voltage: 1100 pV
Maximum Offset Voltage Drift: 15 pVC
Maximum Gain Error: 0.02%
Maximum Gain Error Drift: 10 ppm/°C
Maximum Gain Nonlinearity: 0.001% FSRAC Performance:
Bandwidth: 500 kHz
Typical Slew Rate: 5 V/usWide Supply Range: :2.0 V to t18 VMaximum
Quiescent Current: 900 uAOutput Swing on t15-V Supplies: +13.5
VlInput Protection:
Common-Mode: t500 V
Differential: +500 V
APPLICATIONS
High-Voltage Current SensingBattery Cell Voltage
MonitoringPower-Supply Current MonitoringMotor Controls
Replacement for lsolation Circuits
DESCRIPTION
The INA149 is a precisionunity-gain differenceamplifier with a very
highinput common-modevoltage range. lt is a single, monolithic
device thatconsists of a precision op amp and an integrated
thin.film resistor network. The INA149 can accuratelymeasure small
differential voltages in the presence ofcommon-mode signals up to
+275 V. The INA149inputs are protected from momentary common-modeor
differential overloads of up to 500 V.
In many applications, where galvanic isolation in notrequired, the
INA149 can replace isolation amplifiers.This ability can eliminate
costly isolated input sidepower supplies and the associated ripple,
noise, andquiescent current. The excellent 0.0005% nonlinearityand
500-kHz bandwidth of the INA149 are superior tothose of
conventional isolation amplifiers.
The INA149 is pin-compatible with the INA117 andINA148 type high
common-mode voltage amplifiersand offers improved performance
over both devices.The INA149 is available in the solC-8 package
withoperation specified over the extended industrialtemperature
range of -40°C to +125C.
