INA117 High Common-Mode Voltage Difference Amplifier | TI.com

INA117 (ACTIVE) High Common-Mode Voltage Difference Amplifier

 

Recommended alternative parts

  • INA149  -  Wide ±275V common mode input range

Description

The INA117 is a precision unity-gain difference amplifier with very high common-mode input voltage range. It is a single monolithic IC consisting of a precision op amp and integrated thin-film resistor network. It can accurately measure small differential voltages in the presence of common-mode signals up to ±200V. The INA117 inputs are protected from momentary common-mode or differential overloads up to ±500V.

In many applications, where galvanic isolation is not essential, the INA117 can replace isolation amplifiers. This can eliminate costly isolated input-side power supplies and their associated ripple, noise and quiescent current. The INA117\x92s 0.001% nonlinearity and 200kHz bandwidth are superior to those of conventional isolation amplifiers.

The INA117 is available in 8-pin plastic mini-DIP and SO-8 surface-mount packages, specified for the \x9640°C to +85°C temperature range. The metal TO-99 models are available specified for the \x9640°C to +85°C and \x9655°C to +125°C temperature range.

Features

  • COMMON-MODE INPUT RANGE:
    ±200V (VS = ±15V)
  • PROTECTED INPUTS:
    ±500V Common-Mode
    ±500V Differential
  • UNITY GAIN: 0.02% Gain Error max
  • NONLINEARITY: 0.001% max
  • CMRR: 86dB min
  • APPLICATIONS
    • CURRENT MONITOR
    • BATTERY CELL-VOLTAGE MONITOR
    • GROUND BREAKER
    • INPUT PROTECTION
    • SIGNAL ACQUISITION IN NOISY ENVIRONMENTS
    • FACTORY AUTOMATION

Parametrics

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Part number Order Number of channels (#) Vs (Min) (V) Vs (Max) (V) CMRR (Min) (dB) Common mode input low (Min) (V) Common mode input high (Max) (V) Input offset (+/-) (Max) (uV) Iq (Typ) (mA) Small signal bandwidth (Typ) (MHz) Slew rate (Typ) (V/us) Gain (Min) (V/V) Gain (Max) (V/V) Gain error (+/-) (Max) (%) Rating Operating temperature range (C) Input offset drift (+/-) (Max) (uV/C) Gain drift (Max) (ppm/C)
INA146 Order now 1     2.76     36     76     -100     100     5000     0.6     0.5     0.45     0.1     100     0.1     Catalog     -40 to 85     100     1    
INA148 Order now 1     2.7     36     70     -200     200     5000     0.6     0.1     1     1     1     0.075     Catalog     -55 to 125     100     3    
INA148-Q1 Samples not available 1     2.7     36     70     -200     200     5000     0.6     0.1     1     1     1     0.076     Automotive     -40 to 125     100     3    
INA149 Order now 1     4     36     90     -275     275     1100     0.81     0.5     5     1     1     0.02     Catalog     -40 to 125     10     10