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INA828

ACTIVE

50-μV Offset, 7-nV/√Hz Noise, Low-Power, Precision Instrumentation Amplifier

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Data sheet

INA828

ACTIVE
Data sheet Order now

Product details

Number of channels 1 Vs (max) (V) 36 Vs (min) (V) 4.5 Input offset (±) (max) (µV) 50 Voltage gain (min) (V/V) 1 Voltage gain (max) (V/V) 1000 Noise at 1 kHz (typ) (nV√Hz) 7 Features Overvoltage protection, Super-beta CMRR (min) (dB) 140 Input offset drift (±) (max) (V/°C) 0.0000005 Input bias current (±) (max) (nA) 0.6 Iq (typ) (mA) 0.6 Bandwidth at min gain (typ) (MHz) 2 Gain error (±) (max) (%) 0.15 Operating temperature range (°C) -40 to 125 Rating Catalog Type Resistor Gain nonlinearity (±) (max) (%) 0.002 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) 2 Input common mode headroom (to positive supply) (typ) (V) -2 Noise at 0.1 Hz to 10 Hz (typ) (µVPP) 0.14
Number of channels 1 Vs (max) (V) 36 Vs (min) (V) 4.5 Input offset (±) (max) (µV) 50 Voltage gain (min) (V/V) 1 Voltage gain (max) (V/V) 1000 Noise at 1 kHz (typ) (nV√Hz) 7 Features Overvoltage protection, Super-beta CMRR (min) (dB) 140 Input offset drift (±) (max) (V/°C) 0.0000005 Input bias current (±) (max) (nA) 0.6 Iq (typ) (mA) 0.6 Bandwidth at min gain (typ) (MHz) 2 Gain error (±) (max) (%) 0.15 Operating temperature range (°C) -40 to 125 Rating Catalog Type Resistor Gain nonlinearity (±) (max) (%) 0.002 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) 2 Input common mode headroom (to positive supply) (typ) (V) -2 Noise at 0.1 Hz to 10 Hz (typ) (µVPP) 0.14
SOIC (D) 8 29.4 mm² 4.9 x 6
  • Precision Instrumentation Amplifier Evolution:
    • Second Generation: INA828
    • First Generation: INA128
  • Low Offset Voltage: 50 µV, MAX
  • Gain Drift: 5 ppm/°C (G = 1), 50 ppm/°C (G > 1)
  • Noise: 7 nV/√Hz
  • Bandwidth: 2 MHz (G = 1), 260 kHz (G = 100)
  • Stable with 1-nF Capacitive Loads
  • Inputs Protected Up to ±40 V
  • Common-Mode Rejection:
    • 110 dB, MIN (G = 10)
  • Power-Supply Rejection: 100 dB, MIN (G = 1)
  • Supply Current: 650 µA, MAX
  • Supply Range:
    • Single Supply: 4.5 V to 36 V
    • Dual Supply: ±2.25 V to ±18 V
  • Specified Temperature Range:
    –40°C to +125°C
  • Package: 8-Pin SOIC
  • Precision Instrumentation Amplifier Evolution:
    • Second Generation: INA828
    • First Generation: INA128
  • Low Offset Voltage: 50 µV, MAX
  • Gain Drift: 5 ppm/°C (G = 1), 50 ppm/°C (G > 1)
  • Noise: 7 nV/√Hz
  • Bandwidth: 2 MHz (G = 1), 260 kHz (G = 100)
  • Stable with 1-nF Capacitive Loads
  • Inputs Protected Up to ±40 V
  • Common-Mode Rejection:
    • 110 dB, MIN (G = 10)
  • Power-Supply Rejection: 100 dB, MIN (G = 1)
  • Supply Current: 650 µA, MAX
  • Supply Range:
    • Single Supply: 4.5 V to 36 V
    • Dual Supply: ±2.25 V to ±18 V
  • Specified Temperature Range:
    –40°C to +125°C
  • Package: 8-Pin SOIC

The INA828 is a high-precision instrumentation amplifier that offers low power consumption and operates over a very wide single- or dual-supply range. A single external resistor sets any gain from 1 to 1000. The device offers excellent precision due to the use of new super-beta input transistors which provide exceptionally low input offset voltage, offset voltage drift, input bias current, and input voltage and current noise. Additional circuitry protects the inputs against overvoltage up to ±40 V.

The INA828 is optimized to provide excellent common-mode rejection ratio. At G = 1, the common-mode rejection ratio exceeds 90 dB across the full input common-mode range. The device is well-suited for low-voltage operation from a 5-V single supply as well as dual supplies up to ±18 V. Finally, INA828 is available in an 8-pin SOIC package and specified over the –40°C to +125°C temperature range.

The INA828 is a high-precision instrumentation amplifier that offers low power consumption and operates over a very wide single- or dual-supply range. A single external resistor sets any gain from 1 to 1000. The device offers excellent precision due to the use of new super-beta input transistors which provide exceptionally low input offset voltage, offset voltage drift, input bias current, and input voltage and current noise. Additional circuitry protects the inputs against overvoltage up to ±40 V.

The INA828 is optimized to provide excellent common-mode rejection ratio. At G = 1, the common-mode rejection ratio exceeds 90 dB across the full input common-mode range. The device is well-suited for low-voltage operation from a 5-V single supply as well as dual supplies up to ±18 V. Finally, INA828 is available in an 8-pin SOIC package and specified over the –40°C to +125°C temperature range.
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Technical documentation

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Type Title Date
* Data sheet INA828 50-µV Offset, 7-nV/√Hz Noise, Low-Power, Precision Instrumentation Amplifier datasheet (Rev. A) PDF | HTML 23 Jan 2018
Application note How to Select Amplifiers for Pressure Transmitter Applications (Rev. B) PDF | HTML 14 Feb 2023
Application note Importance of Input Bias Current Return Paths in Instrumentation Amplifier Apps PDF | HTML 27 Jul 2021
Application note Super-Beta Input Amplifiers: Features and Benefits PDF | HTML 06 Oct 2020
Technical article What is an instrumentation amplifier? 09 Aug 2019
Technical article Taking a modular approach to high-precision, high-current battery test equipment 21 Jun 2019
Application note Comprehensive Error Calculation for Instrumentation Amplifiers 26 Mar 2019
Circuit design AC coupled instrumentation amplifier circuit 09 Jan 2019
Circuit design High common-mode differential input voltage to ±10-V ADC input circuit 20 Dec 2018
Circuit design Circuit for driving an ADC with an instrumentation amplifier in high gain 04 Oct 2018
Circuit design Circuit for driving high-voltage SAR ADC with a buffered instrumentation 04 Oct 2018
Technical article How to layout a PCB for an instrumentation amplifier 14 Oct 2016
EVM User's guide Universal Instrumentation Amplifier EVM User’s Guide (Rev. B) PDF | HTML 09 Aug 2016
Technical article Dealing with rejection: Instrumentation amplifier PSRR and CMRR (Part I) 25 Nov 2013

Design & development

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Evaluation board

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Support software

SBAC215 — Source Files for SBAA314

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Instrumentation amplifiers
INA828 — 50-μV Offset, 7-nV/√Hz Noise, Low-Power, Precision Instrumentation Amplifier
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Support software

SBAC216 — Source Files for SBAA286

Supported products & hardware

Supported products & hardware

Products
Instrumentation amplifiers
INA828 — 50-μV Offset, 7-nV/√Hz Noise, Low-Power, Precision Instrumentation Amplifier
Precision ADCs
ADS8568 — 16-bit, 8-channel, simultaneous-sampling, bipolar-input, SAR analog-to-digital converter (ADC)
Precision op amps (Vos<1mV)
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Support software

SBAC217 — Source Files for SBAA999

Supported products & hardware

Supported products & hardware

Products
Instrumentation amplifiers
INA828 — 50-μV Offset, 7-nV/√Hz Noise, Low-Power, Precision Instrumentation Amplifier
Precision ADCs
ADS8568 — 16-bit, 8-channel, simultaneous-sampling, bipolar-input, SAR analog-to-digital converter (ADC)
Precision op amps (Vos<1mV)
OPA827 — Low-noise, high-precision, JFET-input operational amplifier
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Simulation model

INA828 PSpice Model (Rev. C)

SBOMAG5C.ZIP (25 KB) - PSpice Model
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Simulation model

INA828 TINA-TI Reference Design (Rev. B)

SBOMAG3B.TSC (497 KB) - TINA-TI Reference Design
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Simulation model

INA828 TINA-TI Spice Model (Rev. B)

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Calculation tool

ANALOG-ENGINEER-CALC — Analog engineer's calculator

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Design tool

CIRCUIT060067 — Alternating current (AC) coupled instrumentation amplifier circuit

This circuit produces an AC-coupled output from a DC-coupled input to an instrumentation amplifier. The output is fed back through an integrator, and the output of the integrator is used to modulate the reference voltage of the amplifier. This creates a high-pass filter and effectively cancels the (...)
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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 (...)
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Reference designs

TIDA-01042 — Modular battery tester reference design for 50-A, 100-A, and 200-A applications

This reference design provides a modular battery test solution allowing users to have the flexibility to test batteries at different current levels with one design. This design leverages the TIDA-01041 reference design by providing two 100-A battery testers that can work independently or be (...)
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Schematic: PDF
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SOIC (D) 8 View options
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