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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) (uV) 50 Gain (Min) (V/V) 1 Gain (Max) (V/V) 1000 Noise at 1 kHz (Typ) (nV/rt (Hz)) 7 Features Super-beta, Overvoltage Protection CMRR (Min) (dB) 140 Input offset drift (+/-) (Max) (uV/C) 0.5 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 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) 2 Input common mode headroom (to positive supply) (Typ) (V) -2 Noise at 0.1 Hz-10 Hz (Typ) (uVpp) 0.14 Gain non-linearity (+/-) (Max) (%) 0.002
Number of channels (#) 1 Vs (Max) (V) 36 Vs (Min) (V) 4.5 Input offset (+/-) (Max) (uV) 50 Gain (Min) (V/V) 1 Gain (Max) (V/V) 1000 Noise at 1 kHz (Typ) (nV/rt (Hz)) 7 Features Super-beta, Overvoltage Protection CMRR (Min) (dB) 140 Input offset drift (+/-) (Max) (uV/C) 0.5 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 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) 2 Input common mode headroom (to positive supply) (Typ) (V) -2 Noise at 0.1 Hz-10 Hz (Typ) (uVpp) 0.14 Gain non-linearity (+/-) (Max) (%) 0.002
SOIC (D) 8 19 mm² 4.9 x 3.9
  • 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. A) PDF | HTML 27 Jul 2021
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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Simulation model

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INA828 TINA-TI Spice Model (Rev. B)

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Calculation tool

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Simulation tool

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Simulation tool

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Reference designs

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Schematic: PDF
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