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INA823

AKTIV

Präzisions-Instrumentenverstärker (100 µV) mit geringem Stromverbrauch (250 µA) und breitem Versorgu

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INA823

AKTIV
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Produktdetails

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.
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Technische Dokumentation

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* Data sheet INA823 Precision, Low-Power, Wide-Supply (2.7-V to 36-V) Instrumentation Amplifier datasheet (Rev. B) PDF | HTML 23 Nov 2021
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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 und Entwicklung

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