INA122

ACTIVO

Amplificador de instrumentación de micropotencia y alimentación única

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Hoja de datos

document-pdfAcrobat INA122 Single Supply, Micropower Instrumentation Amplifier datasheet (Rev. B) (Inglés) PDF | HTML

INA122

ACTIVO

Hoja de datos

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Detalles del producto

Number of channels

1

Vs (max) (V)

36

Vs (min) (V)

2.2

Input offset (±) (max) (µV)

250

Voltage gain (min) (V/V)

5

Voltage gain (max) (V/V)

10000

Noise at 1 kHz (typ) (nV√Hz)

60

Features

Low power

CMRR (min) (dB)

83

Input offset drift (±) (max) (µV/°C)

3

Input bias current (±) (max) (nA)

25

Iq (typ) (mA)

0.06

Bandwidth at min gain (typ) (MHz)

0.12

Gain error (±) (max) (%)

0.5

Operating temperature range (°C)

-40 to 85

Rating

Catalog

Type

Resistor

Gain nonlinearity (±) (max) (%)

0.002

Output swing headroom (to negative supply) (typ) (V)

0.1

Output swing headroom (to positive supply) (typ) (V)

-0.05

Input common mode headroom (to negative supply) (typ) (V)

0

Input common mode headroom (to positive supply) (typ) (V)

-1.6

Noise at 0.1 Hz to 10 Hz (typ) (µVPP)

2

Number of channels

1

Vs (max) (V)

36

Vs (min) (V)

2.2

Input offset (±) (max) (µV)

250

Voltage gain (min) (V/V)

5

Voltage gain (max) (V/V)

10000

Noise at 1 kHz (typ) (nV√Hz)

60

Features

Low power

CMRR (min) (dB)

83

Input offset drift (±) (max) (µV/°C)

3

Input bias current (±) (max) (nA)

25

Iq (typ) (mA)

0.06

Bandwidth at min gain (typ) (MHz)

0.12

Gain error (±) (max) (%)

0.5

Operating temperature range (°C)

-40 to 85

Rating

Catalog

Type

Resistor

Gain nonlinearity (±) (max) (%)

0.002

Output swing headroom (to negative supply) (typ) (V)

0.1

Output swing headroom (to positive supply) (typ) (V)

-0.05

Input common mode headroom (to negative supply) (typ) (V)

0

Input common mode headroom (to positive supply) (typ) (V)

-1.6

Noise at 0.1 Hz to 10 Hz (typ) (µVPP)

2

SOIC (D)

8

29.4 mm² (4.9 mm × 6 mm)

PDIP (P)

8

92.5083 mm² (9.81 mm × 9.43 mm)

Low quiescent current: 60µA
Wide power supply range: 2.2V to 36V
Rail-to-rail output swing
Low offset voltage: 250µV maximum
Low offset drift: 3µV/°C maximum
Low noise: 60nV/√Hz
Low input bias current: 25nA maximum
Packages
- 4.9mm × 6mm SOIC
- 9.81mm × 9.43mm PDIP

Low quiescent current: 60µA
Wide power supply range: 2.2V to 36V
Rail-to-rail output swing
Low offset voltage: 250µV maximum
Low offset drift: 3µV/°C maximum
Low noise: 60nV/√Hz
Low input bias current: 25nA maximum
Packages
- 4.9mm × 6mm SOIC
- 9.81mm × 9.43mm PDIP

The INA122 is a precision instrumentation amplifier for accurate, low-noise differential signal acquisition. The two-op-amp design provides excellent performance with very low quiescent current (60µA), and is designed for portable instrumentation and data acquisition systems. The INA122 can be operated with single or dual power supplies from 2.2V to 36V.

A single external resistor sets gain from 5V/V to 10000V/V. Laser trimming provides very low offset voltage (250µV maximum), offset voltage drift (3µV/°C maximum) and excellent common-mode rejection.

Package options include 8-pin plastic DIP and SOIC surface-mount packages. Both packages are specified for the −40°C to +85°C temperature range.

The INA122 is a precision instrumentation amplifier for accurate, low-noise differential signal acquisition. The two-op-amp design provides excellent performance with very low quiescent current (60µA), and is designed for portable instrumentation and data acquisition systems. The INA122 can be operated with single or dual power supplies from 2.2V to 36V.

A single external resistor sets gain from 5V/V to 10000V/V. Laser trimming provides very low offset voltage (250µV maximum), offset voltage drift (3µV/°C maximum) and excellent common-mode rejection.

Package options include 8-pin plastic DIP and SOIC surface-mount packages. Both packages are specified for the −40°C to +85°C temperature range.

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Documentación principal	Tipo	Título	Opciones de formato	Fecha
*	Hoja de datos	INA122 Single Supply, Micropower Instrumentation Amplifier datasheet (Rev. B)	PDF \| HTML	18/12/2025
	Nota sobre la aplicación	Importance of Input Bias Current Return Paths in Instrumentation Amplifier Apps	PDF \| HTML	27/07/2021
	Libro electrónico	The Signal e-book: A compendium of blog posts on op amp design topics	PDF \| HTML	28/03/2017
	Analog Design Journal	VCM vs. VOUT plots for instrumentation amplifiers with two op amps		30/10/2015
	Analog Design Journal	4Q 2015 Analog Applications Journal		30/10/2015

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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