INA592 High-precision (40µV offset), 2-MHz, 88dB CMRR, low-power, e-trim difference amplifier | TI.com

INA592
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High-precision (40µV offset), 2-MHz, 88dB CMRR, low-power, e-trim difference amplifier

 

Description

The INA592 device is a low-power, wide bandwidth difference amplifier consisting of a precision operational amplifier (op amp) and a precision resistor network. Excellent tracking of resistors (TCR) maintains gain accuracy and common-mode rejection over temperature. Unique features such as low offset 40 µV (maximum), low offset drift (2 µV/°C maximum) high slew rate (18 V/µs), and high capacitive load drive of up to 500 pF make the INA592 a robust, high-performance difference amplifier for high-voltage industrial applications. The common-mode range of the internal op amp extends to the negative supply, enabling the device to operate in single-supply applications. The device operates on single (4.5 V to 36 V) or dual supplies (±2.25 V to ±18 V).

The difference amplifier is the foundation of many commonly used circuits. The INA592 provides this circuit function without using an expensive precision resistor network. The INA592 is available in 8-pin VSSOP surface-mount package and is specified for operation over the extended industrial temperature range, –40°C to +125°C.

Features

  • Low Offset Voltage: 40 µV (Maximum)
  • Low Offset Voltage Drift: ±2 µV/°C (Maximum)
  • Low Noise: 18 nV/√Hz at 1 kHz
  • Low Gain Error: ±0.03% (Maximum)
  • High Common-Mode Rejection: 88 dB (Minimum)
  • Wide Bandwidth: 2 MHz GBW
  • Low Quiescent Current: 1.1 mA per Amplifier
  • High Slew Rate: 18 V/µs
  • High Capacitive Load Drive Capability: 500 pF
  • Wide Supply Range:
    • Single-Supply: 4.5 V to 36 V
    • Dual-Supply: ±2.25 V to ±18 V
  • Specified Temperature Range:
    –40°C to +125°C
  • 8-Pin VSSOP Package

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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)
INA592 Order now 1     4.5     36     88     -54.3     54     40     1.1     2     18     0.5     2     0.03     Catalog     -40 to 125     1.5     1    
INA132 Order now 1     2.7     36     76     -15     28     250     0.16     0.3     0.1     1     1     0.075     Catalog     -40 to 85     5     1    
INA597 Order now 1     4.5     36     88     -54.3     54     200     1.1     2     18     0.5     2     0.03     Catalog     -40 to 125     5     1