Dual, Low Power Instrumentation Amplifier - INA2128

INA2128 (ACTIVE)

Dual, Low Power Instrumentation Amplifier

 

Description

The INA2128 is a dual, low power, general purpose instrumentation amplifier offering excellent accuracy. Its versatile 3-op amp design and small size make it ideal for a wide range of applications. Current-feedback input circuitry provides wide bandwidth even at high gain (200kHz at G = 100).

A single external resistor sets any gain from 1 to 10,000. Internal input protection can withstand up to ±40V without damage.

The INA2128 is laser trimmed for very low offset voltage (50µV), drift (0.5µV/°C) and high common-mode rejection (120dB at G ≥ 100). It operates with power supplies as low as ±2.25V, and quiescent current is only 700µA per IA—ideal for battery operated and multiple-channel systems.

The INA2128 is available in 16-pin plastic DIP, and SOL-16 surface-mount packages, specified for the -40°C to +85°C temperature range.

Features

  • LOW OFFSET VOLTAGE: 50µV max
  • LOW DRIFT: 0.5µV/°C max
  • LOW INPUT BIAS CURRENT: 5nA max
  • HIGH CMR: 120dB min
  • INPUTS PROTECTED to ±40V
  • WIDE SUPPLY RANGE: ±2.25V to ±18V
  • LOW QUIESCENT CURRENT: 700µA / IA
  • 16-PIN PLASTIC DIP, SOL-16
  • APPLICATIONS
    • SENSOR AMPLIFIER THERMOCOUPLE, RTD, BRIDGE
    • MEDICAL INSTRUMENTATION
    • MULTIPLE-CHANNEL SYSTEMS
    • BATTERY OPERATED EQUIPMENT

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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) (%)
INA2128
2   
4.5   
36   
120   
50   
0.5   
5   
8   
0.7   
1.3   
1   
10000   
2   
Catalog   
-40 to 85   
SOIC   
16SOIC: 106 mm2: 10.3 x 10.3(SOIC)   
0.2   
0.002