INA828

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Amplificador de instrumentación de precisión, baja potencia, offset de 50 μV y ruido de 7 nV/√Hz

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document-pdfAcrobat INA828 50-µV Offset, 7-nV/√Hz Noise, Low-Power, Precision Instrumentation Amplifier datasheet (Rev. A) (Inglés) PDF | HTML

INA828

ACTIVO

Hoja de datos

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Detalles del producto

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) (µV/°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

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) (µV/°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

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 mm × 6 mm)

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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Documentación técnica

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Documentación principal	Tipo	Título	Opciones de formato	Fecha
*	Hoja de datos	INA828 50-µV Offset, 7-nV/√Hz Noise, Low-Power, Precision Instrumentation Amplifier datasheet (Rev. A)	PDF \| HTML	23/01/2018
	Circuit design	AC coupled instrumentation amplifier circuit (Rev. A)	PDF \| HTML	9/10/2024
	Circuit design	Circuit for driving an ADC with an instrumentation amplifier in high gain (Rev. A)	PDF \| HTML	24/09/2024
	Circuit design	High common-mode differential input voltage to ±10-V ADC input circuit (Rev. A)	PDF \| HTML	24/09/2024
	Circuit design	Circuit for driving high-voltage SAR ADC with a buffered instrumentation (Rev. A)	PDF \| HTML	20/09/2024
	Application brief	How to Select Amplifiers for Pressure Transmitter Applications (Rev. B)	PDF \| HTML	14/02/2023
	Nota sobre la aplicación	Importance of Input Bias Current Return Paths in Instrumentation Amplifier Apps	PDF \| HTML	27/07/2021
	Application brief	Super-Beta Input Amplifiers: Features and Benefits	PDF \| HTML	6/10/2020
	Artículo técnico	What is an instrumentation amplifier?	PDF \| HTML	9/08/2019
	Artículo técnico	Taking a modular approach to high-precision, high-current battery test equipment	PDF \| HTML	21/06/2019
	Application brief	Comprehensive Error Calculation for Instrumentation Amplifiers		26/03/2019

Diseño y desarrollo

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Placa de evaluación

INAEVM — Módulo de evaluación de amplificador de instrumentación universal

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 (...)

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