INA129 Precision, Low Power Instrumentation Amplifiers | TI.com

INA129
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
Precision, Low Power Instrumentation Amplifiers

 

Recommended alternative parts

  • INA128  -  Identical performance with different gain equation

Description

The INA128 and INA129 are low-power, general purpose instrumentation amplifiers offering excellent accuracy. The versatile 3-op amp design and small size make these amplifiers ideal for a wide range of applications. Current-feedback input circuitry provides wide bandwidth even at high gain (200 kHz at G = 100).

A single external resistor sets any gain from 1 to 10,000. The INA128 provides an industry-standard gain equation; the INA129 gain equation is compatible with the AD620.

The INA12x is available in 8-pin plastic DIP and SO-8 surface-mount packages, specified for the –40°C to +85°C temperature range. The INA128 is also available in a dual configuration, the INA2128.

The upgraded INA828 offers a lower input bias current (0.6 nA maximum) and lower noise (7 nV/√Hz) at the same quiescent current. See the Device Comparsion Table for a selection of precision instrumentation amplifiers from Texas Instruments.

Features

  • A newer version of this device is now available: INA828
  • Low offset voltage: 50 µV maximum
  • Low drift: 0.5 µV/°C maximum
  • Low Input Bias Current: 5 nA maximum
  • High CMR: 120 dB minimum
  • Inputs protected to ±40 V
  • Wide supply range: ±2.25 V to ±18 V
  • Low quiescent current: 700 µA
  • Packages: 8-pin plastic DIP, SO-8

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Parametrics

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Part number Order Number of channels (#) Vs (Min) (V) Vs (Max) (V) CMRR (Min) (dB) Input offset (+/-) (Max) (uV) Input offset drift (+/-) (Max) (uV/C) Input bias current (+/-) (Max) (nA) Noise at 1 kHz (Typ) (nV/rt (Hz)) Iq (Typ) (mA) Bandwidth at min gain (Typ) (MHz) Gain (Min) (V/V) Gain (Max) (V/V) Gain error (+/-) (Max) (%) Operating temperature range (C) Package Group Package size: mm2:W x L (PKG) Noise at 0.1 Hz-10 Hz (Typ) (uVpp) Gain non-linearity (+/-) (Max) (%)
INA129 Order now 1     4.5     36     120     50     0.5     5     8     0.7     1.3     1     10000     2     -40 to 125     PDIP | 8
SOIC | 8    
8PDIP: 93 mm2: 9.43 x 9.81 (PDIP | 8)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)    
0.2     0.002