INA293

ACTIVO

Amplificador de detección de corriente ultrapreciso de 4 V a 110 V y 1.3 MHz

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Hoja de datos

document-pdfAcrobat INA293 –4 V to 110 V, 1.3-MHz, Ultra-Precise Current Sense Amplifier datasheet (Rev. B) (Inglés) PDF | HTML

INA293

ACTIVO

Hoja de datos

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Detalles del producto

Product type

Analog output

Common-mode voltage (max) (V)

110

Common-mode voltage (min) (V)

-4

Input offset (±) (max) (µV)

20, 30, 50, 80, 150

Input offset drift (±) (typ) (µV/°C)

0.025

Features

Low-side Capable, Ultra precise

Rating

Catalog

Voltage gain (V/V)

20, 50, 100, 200, 500

CMRR (min) (dB)

140

Bandwidth (kHz)

900, 1000, 1300

Iq (max) (mA)

2.25

Number of channels

1

Comparators (#)

0

Gain error (%)

0.15

Gain error drift (±) (max) (ppm/°C)

10

Slew rate (V/µs)

2.5

Operating temperature range (°C)

-40 to 125

Product type

Analog output

Common-mode voltage (max) (V)

110

Common-mode voltage (min) (V)

-4

Input offset (±) (max) (µV)

20, 30, 50, 80, 150

Input offset drift (±) (typ) (µV/°C)

0.025

Features

Low-side Capable, Ultra precise

Rating

Catalog

Voltage gain (V/V)

20, 50, 100, 200, 500

CMRR (min) (dB)

140

Bandwidth (kHz)

900, 1000, 1300

Iq (max) (mA)

2.25

Number of channels

1

Comparators (#)

0

Gain error (%)

0.15

Gain error drift (±) (max) (ppm/°C)

10

Slew rate (V/µs)

2.5

Operating temperature range (°C)

-40 to 125

SOT-23 (DBV)

5

8.12 mm² (2.9 mm × 2.8 mm)

Wide common-mode voltage:
- Operational voltage: −4 V to +110 V
- Survival voltage: −20 V to +120 V
Excellent CMRR:
- 160-dB DC-CMRR
- 85-dB AC-CMRR at 50 kHz
Accuracy:
- Gain:
  - Gain error: ±0.15% (maximum)
  - Gain drift: ±10 ppm/ °C (maximum)
- Offset:
  - Offset voltage: ±15 µV (typical)
  - Offset drift: ±0.05 µV/ °C (typical)
Available gains:
- INA293A1, INA293B1 : 20 V/V
- INA293A2, INA293B2 : 50 V/V
- INA293A3, INA293B3 : 100 V/V
- INA293A4, INA293B4 : 200 V/V
- INA293A5, INA293B5 : 500 V/V
High bandwidth: 1.3 MHz
Slew rate: 2.5 V/µs
Quiescent current: 1.5 mA

Wide common-mode voltage:
- Operational voltage: −4 V to +110 V
- Survival voltage: −20 V to +120 V
Excellent CMRR:
- 160-dB DC-CMRR
- 85-dB AC-CMRR at 50 kHz
Accuracy:
- Gain:
  - Gain error: ±0.15% (maximum)
  - Gain drift: ±10 ppm/ °C (maximum)
- Offset:
  - Offset voltage: ±15 µV (typical)
  - Offset drift: ±0.05 µV/ °C (typical)
Available gains:
- INA293A1, INA293B1 : 20 V/V
- INA293A2, INA293B2 : 50 V/V
- INA293A3, INA293B3 : 100 V/V
- INA293A4, INA293B4 : 200 V/V
- INA293A5, INA293B5 : 500 V/V
High bandwidth: 1.3 MHz
Slew rate: 2.5 V/µs
Quiescent current: 1.5 mA

The INA293 is a ultra-precise current sense amplifier that can measure voltage drops across shunt resistors over a wide common-mode range from –4 V to 110 V. The negative common-mode voltage allows the device to operate below ground, thus accommodating precise measurement of recirculating currents in half-bridge applications. The combination of a low offset voltage, small gain error and high DC CMRR enables highly accurate current measurement. The INA293 is not only designed for DC current measurement, but also for high-speed applications (ex. Fast over-current protection) with a high bandwidth of 1.3 MHz and an 85-dB AC CMRR (at 50 kHz).

The INA293 operates from a single 2.7-V to 20-V supply, drawing 1.5 mA of supply current. The INA293 is available with five gain options: 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V. These gain options address wide dynamic range current-sensing applications.

The INA293 is specified over an operating temperature range of −40 °C to +125 °C and is offered in a space-saving SOT-23 package with two pin-out variants.

The INA293 is a ultra-precise current sense amplifier that can measure voltage drops across shunt resistors over a wide common-mode range from –4 V to 110 V. The negative common-mode voltage allows the device to operate below ground, thus accommodating precise measurement of recirculating currents in half-bridge applications. The combination of a low offset voltage, small gain error and high DC CMRR enables highly accurate current measurement. The INA293 is not only designed for DC current measurement, but also for high-speed applications (ex. Fast over-current protection) with a high bandwidth of 1.3 MHz and an 85-dB AC CMRR (at 50 kHz).

The INA293 operates from a single 2.7-V to 20-V supply, drawing 1.5 mA of supply current. The INA293 is available with five gain options: 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V. These gain options address wide dynamic range current-sensing applications.

The INA293 is specified over an operating temperature range of −40 °C to +125 °C and is offered in a space-saving SOT-23 package with two pin-out variants.

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ACTIVO

Amplificador de detección de corriente de -4 V a 110 V, 1.3 MHz y alta precisión Identical functionality with reduced accuracy

Documentación técnica

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Documentación principal	Tipo	Título	Opciones de formato	Fecha
*	Hoja de datos	INA293 –4 V to 110 V, 1.3-MHz, Ultra-Precise Current Sense Amplifier datasheet (Rev. B)	PDF \| HTML	10/08/2022
	Nota sobre la aplicación	Using a PCB Copper Trace as a Current Sense Shunt Resistor (Rev. A)	PDF \| HTML	27/04/2026
	Nota sobre la aplicación	Risks and Prevention of ESD, EOS, and Latch Up Events for Current Sense Amplifiers	PDF \| HTML	18/11/2024
	Application brief	Current Sensing in an H-Bridge (Rev. D)	PDF \| HTML	7/04/2023
	Application brief	High-Side Drive, High-Side Solenoid Monitor With PWM Rejection (Rev. D)	PDF \| HTML	15/08/2022
	Nota sobre la aplicación	High Side, Bidirectional Current Sensing Circuit With Unidirectional Current	PDF \| HTML	18/03/2022
	Application brief	Safety and Protection for Discrete Digital Outputs in a PLC System Using Current (Rev. B)	PDF \| HTML	10/03/2022
	Nota sobre la aplicación	Bidirectional Current Sensing With Unidirectional Current Shunt Monitor	PDF \| HTML	7/10/2021
	Nota sobre la aplicación	Current Shunt Amplifier Considerations for Driving SAR ADCs	PDF \| HTML	23/03/2021
	Application brief	High-Side Motor Current Monitoring for Over-Current Protection (Rev. B)	PDF \| HTML	23/02/2021
	Application brief	Benefits of Intergated Low Inductive Shunt for PWM Applications		17/06/2017
	Application brief	Precision LED Brightness and Color Mixing With Discrete Current Sense Amplifiers		28/02/2017
	Analog Design Journal	Low-cost current-shunt monitor IC revives moving-coil meter design		18/04/2006

Diseño y desarrollo

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Placa de evaluación

INA293EVM — Módulo de evaluación INA293 de amplificador de detección de corriente de -4 V a 110 V, 1.3 MHz y alt

Se trata de un pequeño módulo con 10 placas completamente independientes que el usuario puede desmontar. Diez placas esquemáticamente idénticas para cada una de las cinco variaciones de ganancia y dos variaciones de configuración de pines del INA293 con entradas de modo común de hasta 110 V y (...)

Guía del usuario: PDF