Instrumentation Amplifier with Precision Voltage Reference - INA125

INA125 (ACTIVE)

Instrumentation Amplifier with Precision Voltage Reference

 

Description

The INA125 is a low power, high accuracy instrumentation amplifier with a precision voltage reference. It provides complete bridge excitation and precision differential-input amplification on a single integrated circuit.

A single external resistor sets any gain from 4 to 10,000. The INA125 is laser-trimmed for low offset voltage (250µV), low offset drift (2µV/°C), and high common-mode rejection (100dB at G = 100). It operates on single (+2.7V to +36V) or dual (±1.35V to ±18V) supplies.

The voltage reference is externally adjustable with pin-selectable voltages of 2.5V, 5V, or 10V, allowing use with a variety of transducers. The reference voltage is accurate to ±0.5% (max) with ±35ppm/°C drift (max). Sleep mode allows shutdown and duty cycle operation to save power.

The INA125 is available in 16-pin plastic DIP and SO-16 surface-mount packages and is specified for the -40°C to +85°C industrial temperature range.

Features

  • LOW QUIESCENT CURRENT: 460µA
  • PRECISION VOLTAGE REFERENCE: 1.24V, 2.5V, 5V or 10V
  • SLEEP MODE
  • LOW OFFSET VOLTAGE: 250µV max
  • LOW OFFSET DRIFT: 2µV/°C max
  • LOW INPUT BIAS CURRENT: 20nA max
  • HIGH CMR: 100dB min
  • LOW NOISE: 38nV/sqrt(Hz) at f = 1kHz
  • INPUT PROTECTION TO ±40V
  • WIDE SUPPLY RANGE
    • Single Supply: 2.7V to 36V
    • Dual Supply: ±1.35V to ±18V
  • 16-PIN DIP and SO-16 SOIC PACKAGES

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Parametrics Compare all products in Instrumentation Amplifiers

 
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 1kHz (Typ) (nV/rt(Hz))
Iq (Typ) (mA)
Bandwidth at Min Gain (Typ) (MHz)
Gain (Min) (V/V)
Gain (Max) (V/V)
Gain Error (+/-) (Max) (%)
Rating
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) (%)
INA125
1   
2.7   
36   
100   
250   
2   
25   
38   
0.46   
0.15   
4   
10000   
1   
Catalog   
-40 to 85   
PDIP
SOIC   
See datasheet (PDIP)
16SOIC: 59 mm2: 6 x 9.9(SOIC)   
0.8   
0.012