Home Amplifiers Instrumentation amplifiers
Home
Amplifiers
Instrumentation amplifiers

INA823

ACTIVE

Precision (100 µV), low-power (250 µA), wide-supply (2.7 V to 36 V), instrumentation amplifier

Order now
Data sheet

INA823

ACTIVE
Data sheet Order now

Product details

Number of channels 1 Vs (max) (V) 36 Vs (min) (V) 2.7 Input offset (±) (max) (µV) 100 Voltage gain (min) (V/V) 1 Voltage gain (max) (V/V) 10000 Noise at 1 kHz (typ) (nV√Hz) 21 Features Cost Optimized, Low power, Overvoltage protection CMRR (min) (dB) 120 Input offset drift (±) (max) (µV/°C) 1.2 Input bias current (±) (max) (nA) 8 Iq (typ) (mA) 0.18 Bandwidth at min gain (typ) (MHz) 1.9 Gain error (±) (max) (%) 0.2 Operating temperature range (°C) -40 to 125 Rating Catalog Type Resistor Gain nonlinearity (±) (max) (%) 0.001 Output swing headroom (to negative supply) (typ) (V) 0.15 Output swing headroom (to positive supply) (typ) (V) -0.15 Input common mode headroom (to negative supply) (typ) (V) -0.15 Input common mode headroom (to positive supply) (typ) (V) -1 Noise at 0.1 Hz to 10 Hz (typ) (µVPP) 0.4
Number of channels 1 Vs (max) (V) 36 Vs (min) (V) 2.7 Input offset (±) (max) (µV) 100 Voltage gain (min) (V/V) 1 Voltage gain (max) (V/V) 10000 Noise at 1 kHz (typ) (nV√Hz) 21 Features Cost Optimized, Low power, Overvoltage protection CMRR (min) (dB) 120 Input offset drift (±) (max) (µV/°C) 1.2 Input bias current (±) (max) (nA) 8 Iq (typ) (mA) 0.18 Bandwidth at min gain (typ) (MHz) 1.9 Gain error (±) (max) (%) 0.2 Operating temperature range (°C) -40 to 125 Rating Catalog Type Resistor Gain nonlinearity (±) (max) (%) 0.001 Output swing headroom (to negative supply) (typ) (V) 0.15 Output swing headroom (to positive supply) (typ) (V) -0.15 Input common mode headroom (to negative supply) (typ) (V) -0.15 Input common mode headroom (to positive supply) (typ) (V) -1 Noise at 0.1 Hz to 10 Hz (typ) (µVPP) 0.4
SOIC (D) 8 29.4 mm² 4.9 x 6 VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • Input overvoltage protection up to ±60 V
  • Input voltage extends 150 mV below negative supply
  • Low power supply current: 180 µA (typ)
  • Precision performance:
    • Low offset voltage: 20 µV (typ), 100 µV (max)
    • Low input bias current: 8nA (max)
    • Common-mode rejection:
      • 84 dB, G = 1 (min)
      • 104 dB, G = 10 (min)
      • 120 dB, G ≥ 100 (min)
    • Power supply rejection: 100 dB, G = 1 (min)
  • Input voltage noise: 21 nV/√Hz
  • Bandwidth: 1.9 MHz (G = 1), 60 kHz (G = 100)
  • Stable with 1-nF capacitive loads
  • Supply range:
    • Single-supply: 2.7 V to 36 V
    • Dual-supply: ±1.35 V to ±18 V
  • Specified temperature range: –40°C to +125°C
  • Packages: 8-pin SOIC and 8-pin VSSOP
  • Input overvoltage protection up to ±60 V
  • Input voltage extends 150 mV below negative supply
  • Low power supply current: 180 µA (typ)
  • Precision performance:
    • Low offset voltage: 20 µV (typ), 100 µV (max)
    • Low input bias current: 8nA (max)
    • Common-mode rejection:
      • 84 dB, G = 1 (min)
      • 104 dB, G = 10 (min)
      • 120 dB, G ≥ 100 (min)
    • Power supply rejection: 100 dB, G = 1 (min)
  • Input voltage noise: 21 nV/√Hz
  • Bandwidth: 1.9 MHz (G = 1), 60 kHz (G = 100)
  • Stable with 1-nF capacitive loads
  • Supply range:
    • Single-supply: 2.7 V to 36 V
    • Dual-supply: ±1.35 V to ±18 V
  • Specified temperature range: –40°C to +125°C
  • Packages: 8-pin SOIC and 8-pin VSSOP

The INA823 is an integrated instrumentation amplifier that offers low power consumption and operates over a wide, single-supply or dual-supply range. A single external resistor sets any gain from 1 to 10,000. The device provides low input offset voltage, low offset voltage drift, low input bias current, and low current noise while remaining cost-effective. Additional circuitry protects the inputs against overvoltage up to ±60 V.

The INA823 is optimized to provide a high common-mode rejection ratio. At G = 1, the common-mode rejection ratio exceeds 84 dB across the full input common-mode range. The INA823 has a wide common-mode voltage range as low as 150-mV below negative supply. The device is designed for low-voltage operation from a 2.7-V single supply, and dual supplies up to ±18 V. The low power and single supply operation enable hand-held, battery-operated systems.

The INA823 is an integrated instrumentation amplifier that offers low power consumption and operates over a wide, single-supply or dual-supply range. A single external resistor sets any gain from 1 to 10,000. The device provides low input offset voltage, low offset voltage drift, low input bias current, and low current noise while remaining cost-effective. Additional circuitry protects the inputs against overvoltage up to ±60 V.

The INA823 is optimized to provide a high common-mode rejection ratio. At G = 1, the common-mode rejection ratio exceeds 84 dB across the full input common-mode range. The INA823 has a wide common-mode voltage range as low as 150-mV below negative supply. The device is designed for low-voltage operation from a 2.7-V single supply, and dual supplies up to ±18 V. The low power and single supply operation enable hand-held, battery-operated systems.
filter Find other Instrumentation amplifiers
Download View video with transcript Video

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 8
Top documentation Type Title Format options Date
* Data sheet INA823 Precision, Low-Power, Wide-Supply (2.7-V to 36-V) Instrumentation Amplifier datasheet (Rev. B) PDF | HTML 23 Nov 2021
Application note High Accuracy Wheatstone Bridge Amplifier Circuit to 4-20-mA Current Loop Transm PDF | HTML 28 Sep 2023
Application brief How to Select Amplifiers for Pressure Transmitter Applications (Rev. B) PDF | HTML 14 Feb 2023
Product overview Bridge Sensor Solution (Rev. A) PDF | HTML 27 Jan 2023
Product overview PLC Analog Input Front-End Architectures PDF | HTML 31 Jul 2022
Application note Cost-Optimized, High-Performance Front-End Design for Analog Input Modules PDF | HTML 22 Jun 2022
Application note Amplifier Input Common-Mode and Output-Swing Limitations PDF | HTML 14 Jan 2022
Application note Importance of Input Bias Current Return Paths in Instrumentation Amplifier Apps PDF | HTML 27 Jul 2021

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

INAEVM — Universal Instrumentation Amplifier Evaluation Module

The universal INAEVM (Instrumentation Amplifier Evaluation Module) is available in two package options that simplify prototyping precision instrumentation amplifiers in either the SO-8 (D) package or the MSOP-8(DGK) package with the pinout shown.  See the chart in the user guide (...)

User guide: PDF | HTML
View Options
Simulation model

INA823 PSpice Model (Rev. B)

SBOMBU8B.ZIP (26 KB) - PSpice Model
Download
Simulation model

INA823 TINA-TI Reference Design (Rev. B)

SBOMBU9B.TSC (504 KB) - TINA-TI Reference Design
Download
Simulation model

INA823 TINA-TI Spice Model (Rev. B)

SBOMBU7B.ZIP (16 KB) - TINA-TI Spice Model
Download
Calculation tool

ANALOG-ENGINEER-CALC — PC software analog engineer's calculator

The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)

Supported products & hardware

Supported products & hardware
Launch Download
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Request
Simulation tool

TINA-TI — SPICE-based analog simulation program

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
User guide: PDF
View Options
Package Pins CAD symbols, footprints & 3D models
SOIC (D) 8 Ultra Librarian
VSSOP (DGK) 8 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos