INA322:Micropower Single-Supply CMOS Instrumentation Amplifier

The INA322 family is a series of low cost, rail-to-rail output, micropower CMOS instrumentation amplifiers that offer wide-range, single-supply, as well as bipolar-supply operation. The INA322 family provides low-cost, low-noise amplification of differential signals with micropower current consumption of 40?A. When shutdown the INA322 has a quiescent current of less than 1?A. Returning to normal operations within nanoseconds, the shutdown feature makes the INA322 optimal for low-power battery or multiplexing applications.

Configured internally for 5V/V gain, the INA322 offers exceptional flexibility with user-programmable external gain resistors. The INA322 reduces common-mode error over frequency and with CMRR remaining high up to 3kHz, line noise and line harmonics are rejected.

The low-power design does not compromise on bandwidth or slew rate, making the INA322 ideal for driving sampling Analog-to-Digital (A/D) converters as well as general-purpose applications. With high precision, low cost, and small packaging, the INA322 outperforms discrete designs, while offering reliability and performance.

Features
  • LOW COST
  • LOW QUIESCENT CURRENT: 40?A/channel
    Shut Down: < 1?A
  • HIGH GAIN ACCURACY: G = 5, 0.07%, 2ppm/°C
  • GAIN SET WITH EXTERNAL RESISTORS
  • LOW BIAS CURRENT: 10pA
  • BANDWIDTH: 500kHz, G = 5V/V
  • RAIL-TO-RAIL OUTPUT SWING: (V+) - 0.02V
  • WIDE TEMPERATURE RANGE: -55°C to +125°C
  • SINGLE VERSION IN MSOP-8 PACKAGE AND DUAL VERSION IN TSSOP-14 PACKAGE
  • APPLICATIONS
    • INDUSTRIAL SENSOR AMPLIFIERS: Bridge, RTD, Thermistor, Position
    • PHYSIOLOGICAL AMPLIFIERS: ECG, EEG, EMG
    • A/D CONVERTER SIGNAL CONDITIONING
    • DIFFERENTIAL LINE RECEIVERS WITH GAIN
    • FIELD UTILITY METERS
    • PCMCIA CARDS
    • COMMUNICATION SYSTEMS
    • TEST EQUIPMENT
    • AUTOMOTIVE INSTRUMENTATION
  • INDUSTRIAL SENSOR AMPLIFIERS: Bridge, RTD, Thermistor, Position
  • PHYSIOLOGICAL AMPLIFIERS: ECG, EEG, EMG
  • A/D CONVERTER SIGNAL CONDITIONING
  • DIFFERENTIAL LINE RECEIVERS WITH GAIN
  • FIELD UTILITY METERS
  • PCMCIA CARDS
  • COMMUNICATION SYSTEMS
  • TEST EQUIPMENT
  • AUTOMOTIVE INSTRUMENTATION
Parametrics
keyINA322
Number of Channels (#)1
Vs (Min) (V)2.5
Vs (Max) (V)5.5
CMRR (Min) (dB)60
Input Offset (+/-) (Max) (uV)10000
Input Offset Drift (+/-) (Max) (uV/C)7
Input Bias Current (+/-) (Max) (nA)0.01
Noise at 1kHz (Typ) (nV/rt(Hz))100
Iq (Typ) (mA)0.04
Bandwidth at Min Gain (Typ) (MHz)0.5
Gain (Min) (V/V)5
Gain (Max) (V/V)1000
Gain Error (+/-) (Max) (%)0.4
RatingCatalog
Operating Temperature Range (C)-55 to 125
Package GroupVSSOP
Approx. Price (US$)0.95 | 1ku
Package Size: mm2:W x L (PKG)8VSSOP: 15 mm2: 4.9 x 3(VSSOP)
Noise at 0.1 Hz - 10 Hz (Typ) (uVpp)20
Gain Non-Linearity (+/-) (Max) (%)0.01
Datasheet?(1)
TitleTypeSize (KB)Date
microPower Single-Supply CMOS Instrumentation Amplifier (Rev. B)PDF80909 Feb 2006
Selection & solution guides?(1)
TitleTypeSize (KB)Date
Analog Signal Chain Guide (Rev. B)PDF600011 Jul 2013
Models?(3)
TitleTypeSize (KB)Date
INA322 PSpice Model (Rev. A)ZIP56?KB04 Oct 2011
INA322 TINA-TI Reference Design (Rev. B)TSC85?KB03 Oct 2011
INA322 TINA-TI Spice Model (Rev. A)ZIP3?KB04 Oct 2011
Development tools?(2)
NamePart#Type
Calculate Input Common-Mode Range of Instrumentation AmplifiersINA-CMV-CALCCalculation Tools
SPICE-Based Analog Simulation ProgramTINA-TICircuit Design & Simulation
Ordering Information
Part #Preproduction / Production MaterialStatusTemp(oC)Price | QTYPackage | PinsDevice MarkingPackage QTY | Carrier
INA322EA/250ProductionACTIVE-55 to 1251.10 | 1kuVSSOP?(DGK)C22250 | SMALL T&R
INA322EA/250G4ProductionACTIVE-55 to 1251.10 | 1kuVSSOP?(DGK)C22250 | SMALL T&R
INA322EA/2K5ProductionACTIVE-55 to 1250.95 | 1kuVSSOP?(DGK)C222500 | LARGE T&R
microPower Single-Supply CMOS Instrumentation Amplifier INA322
所选封装材料的热学和电学性质 DCP010505B
模拟信号链路产品指南 (Rev. B) BQ24392
INA322 PSpice Model INA322
INA322 TINA-TI Reference Design INA322
INA322 TINA-TI Spice Model INA322
INA322
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