INA597 Precision (200µV offset), 2MHz, 88 dB CMRR, low power, e-trim™ difference amplifier | TI.com

INA597
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Precision (200µV offset), 2MHz, 88 dB CMRR, low power, e-trim™ difference amplifier

 

Description

The INA597 is a low-power, wide-bandwidth, difference amplifier for cost-sensitive applications. The INA597 consists of a precision operational amplifier (op amp) and a precision resistor network. Excellent tracking of resistors maintains gain accuracy and common-mode rejection over temperature. Unique features such as low offset (200 µV, maximum), low offset drift (5 µV/°C maximum) high slew rate (18 V/µs), and high capacitive load drive of up to 500 pF make the INA597 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, and enables 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 INA597 provides this circuit function without using an expensive precision resistor network.

The INA597 is available in 8-pin VSSOP surface-mount package, and is specified for operation over the industrial temperature range of –40°C to +125°C.

 

 

 

Features

  • Low offset voltage: 200 µV (maximum)
  • Low offset voltage drift: ±5 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)
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    
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    
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