INA188

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Amplificador de instrumentación de 36 V, deriva cero y salida de carril a carril

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Hoja de datos

document-pdfAcrobat INA188 Precision, Zero-Drift, Rail-to-Rail Out, High-Voltage Instrumentation Amplifier datasheet (Inglés) PDF | HTML

INA188

ACTIVO

Hoja de datos

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Detalles del producto

Number of channels

1

Vs (max) (V)

36

Vs (min) (V)

4

Input offset (±) (max) (µV)

55

Voltage gain (min) (V/V)

1

Voltage gain (max) (V/V)

1000

Noise at 1 kHz (typ) (nV√Hz)

12.5

Features

Small Size, Zero Drift

CMRR (min) (dB)

118

Input offset drift (±) (max) (µV/°C)

0.2

Input bias current (±) (max) (nA)

2.5

Iq (typ) (mA)

1.4

Bandwidth at min gain (typ) (MHz)

0.6

Gain error (±) (max) (%)

0.2

Operating temperature range (°C)

-40 to 125

Rating

Catalog

Type

Resistor

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

0.22

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

-0.22

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

0.1

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

-1.5

Noise at 0.1 Hz to 10 Hz (typ) (µVPP)

0.25

Number of channels

1

Vs (max) (V)

36

Vs (min) (V)

4

Input offset (±) (max) (µV)

55

Voltage gain (min) (V/V)

1

Voltage gain (max) (V/V)

1000

Noise at 1 kHz (typ) (nV√Hz)

12.5

Features

Small Size, Zero Drift

CMRR (min) (dB)

118

Input offset drift (±) (max) (µV/°C)

0.2

Input bias current (±) (max) (nA)

2.5

Iq (typ) (mA)

1.4

Bandwidth at min gain (typ) (MHz)

0.6

Gain error (±) (max) (%)

0.2

Operating temperature range (°C)

-40 to 125

Rating

Catalog

Type

Resistor

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

0.22

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

-0.22

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

0.1

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

-1.5

Noise at 0.1 Hz to 10 Hz (typ) (µVPP)

0.25

SOIC (D)

8

29.4 mm² (4.9 mm × 6 mm)

WSON (DRJ)

8

16 mm² (4 mm × 4 mm)

Excellent DC Performance:
- Low Input Offset Voltage: 55 µV (max)
- Low Input Offset Drift: 0.2 µV/°C (max)
- High CMRR: 104 dB, G ≥ 10 (min)
Low Input Noise:
- 12 nV/√Hz at 1 kHz
- 0.25 µV_PP (0.1 Hz to 10 Hz)
Wide Supply Range:
- Single Supply: 4 V to 36 V
- Dual Supply: ±2 V to ±18 V
Gain Set with a Single External Resistor:
- Gain Equation: G = 1 + (50 kΩ / R_G)
- Gain Error: 0.007%, G = 1
- Gain Drift: 5 ppm/°C (max) G = 1
Input Voltage: (V–) + 0.1 V to (V+) – 1.5 V
RFI-Filtered Inputs
Rail-to-Rail Output
Low Quiescent Current: 1.4 mA
Operating Temperature: –55°C to +150°C
SOIC-8 and DFN-8 Packages

Excellent DC Performance:
- Low Input Offset Voltage: 55 µV (max)
- Low Input Offset Drift: 0.2 µV/°C (max)
- High CMRR: 104 dB, G ≥ 10 (min)
Low Input Noise:
- 12 nV/√Hz at 1 kHz
- 0.25 µV_PP (0.1 Hz to 10 Hz)
Wide Supply Range:
- Single Supply: 4 V to 36 V
- Dual Supply: ±2 V to ±18 V
Gain Set with a Single External Resistor:
- Gain Equation: G = 1 + (50 kΩ / R_G)
- Gain Error: 0.007%, G = 1
- Gain Drift: 5 ppm/°C (max) G = 1
Input Voltage: (V–) + 0.1 V to (V+) – 1.5 V
RFI-Filtered Inputs
Rail-to-Rail Output
Low Quiescent Current: 1.4 mA
Operating Temperature: –55°C to +150°C
SOIC-8 and DFN-8 Packages

The INA188 is a precision instrumentation amplifier that uses TI proprietary auto-zeroing techniques to achieve low offset voltage, near-zero offset and gain drift, excellent linearity, and exceptionally low-noise density (12 nV/√Hz) that extends down to dc.

The INA188 is optimized to provide excellent common-mode rejection of greater than 104 dB (G ≥ 10). Superior common-mode and supply rejection supports high-resolution, precise measurement applications. The versatile three op-amp design offers a rail-to-rail output, low-voltage operation from a 4-V single supply as well as dual supplies up to ±18 V, and a wide, high-impedance input range. These specifications make this device ideal for universal signal measurement and sensor conditioning (such as temperature or bridge applications).

A single external resistor sets any gain from 1 to 1000. The INA188 is designed to use an industry-standard gain equation: G = 1 + (50 kΩ / R_G). The reference pin can be used for level-shifting in single-supply operation or for an offset calibration.

The INA188 is specified over the temperature range of –40°C to +125°C .

The INA188 is a precision instrumentation amplifier that uses TI proprietary auto-zeroing techniques to achieve low offset voltage, near-zero offset and gain drift, excellent linearity, and exceptionally low-noise density (12 nV/√Hz) that extends down to dc.

The INA188 is optimized to provide excellent common-mode rejection of greater than 104 dB (G ≥ 10). Superior common-mode and supply rejection supports high-resolution, precise measurement applications. The versatile three op-amp design offers a rail-to-rail output, low-voltage operation from a 4-V single supply as well as dual supplies up to ±18 V, and a wide, high-impedance input range. These specifications make this device ideal for universal signal measurement and sensor conditioning (such as temperature or bridge applications).

A single external resistor sets any gain from 1 to 1000. The INA188 is designed to use an industry-standard gain equation: G = 1 + (50 kΩ / R_G). The reference pin can be used for level-shifting in single-supply operation or for an offset calibration.

The INA188 is specified over the temperature range of –40°C to +125°C .

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Documentación técnica

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Documentación principal	Tipo	Título	Opciones de formato	Fecha
*	Hoja de datos	INA188 Precision, Zero-Drift, Rail-to-Rail Out, High-Voltage Instrumentation Amplifier datasheet	PDF \| HTML	22/09/2015
	Application brief	Offset Correction Methods: Laser Trim, e-Trim, and Chopper (Rev. D)	PDF \| HTML	5/12/2024
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	Nota sobre la aplicación	Importance of Input Bias Current Return Paths in Instrumentation Amplifier Apps	PDF \| HTML	27/07/2021
	Artículo técnico	How to design an accurate DC power supply	PDF \| HTML	8/04/2021
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	Libro electrónico	The Signal e-book: A compendium of blog posts on op amp design topics	PDF \| HTML	28/03/2017
	Guía del usuario	Single-Supply Thermocouple with RTD Base Cold-Junction Compensation Design Guide		8/07/2016
	Guía de diseño	High Accuracy AC Current Measurement Using PCB Rogowski Coil Sensor Design Guide (Rev. A)		5/07/2016
	Analog Design Journal	Using op amps to reduce near-field EMI on PCBs		26/01/2016
	Artículo técnico	Noise effects on the precision of amplifiers	PDF \| HTML	4/11/2015

Diseño y desarrollo

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Placa de evaluación

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Guía del usuario: PDF | HTML