Product details

Number of channels (#) 1 Vs (Max) (V) 36 Vs (Min) (V) 2.7 Input offset (+/-) (Max) (uV) 100 Gain (Min) (V/V) 1 Gain (Max) (V/V) 1000 Noise at 1 kHz (Typ) (nV/rt (Hz)) 21 Features Cost Optimized, Low power, Overvoltage Protection CMRR (Min) (dB) 120 Input offset drift (+/-) (Max) (uV/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 Type Resistor 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-10 Hz (Typ) (uVpp) 0.4 Gain non-linearity (+/-) (Max) (%) 0.001
Number of channels (#) 1 Vs (Max) (V) 36 Vs (Min) (V) 2.7 Input offset (+/-) (Max) (uV) 100 Gain (Min) (V/V) 1 Gain (Max) (V/V) 1000 Noise at 1 kHz (Typ) (nV/rt (Hz)) 21 Features Cost Optimized, Low power, Overvoltage Protection CMRR (Min) (dB) 120 Input offset drift (+/-) (Max) (uV/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 Type Resistor 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-10 Hz (Typ) (uVpp) 0.4 Gain non-linearity (+/-) (Max) (%) 0.001
SOIC (D) 8 19 mm² 4.9 x 3.9 SOIC (D) 8 VSSOP (DGK) 8 15 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.

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Technical documentation

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Type Title Date
* Data sheet INA823 Precision, Low-Power, Wide-Supply (2.7-V to 36-V) Instrumentation Amplifier datasheet (Rev. B) 23 Nov 2021
Application note Importance of Input Bias Current Return Paths in Instrumentation Amplifier Apps 27 Jul 2021
Technical article What is an instrumentation amplifier? 09 Aug 2019
Technical article How to layout a PCB for an instrumentation amplifier 14 Oct 2016
Technical article Dealing with rejection: Instrumentation amplifier PSRR and CMRR (Part I) 25 Nov 2013

Design & development

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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 (...)

Simulation model

INA823 TINA-TI Spice Model (Rev. A)

SBOMBU7A.ZIP (16 KB) - TINA-TI Spice Model
Simulation model

INA823 PSpice Model (Rev. A)

SBOMBU8A.ZIP (60 KB) - PSpice Model
Simulation model

INA823 TINA-TI Reference Design (Rev. A)

SBOMBU9A.TSC (602 KB) - TINA-TI Reference Design
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 (...)
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 (...)
Calculation tool

ANALOG-ENGINEER-CALC — 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 op-amp gain with feedback (...)
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SOIC (D) 8 View options
VSSOP (DGK) 8 View options

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