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INA2321

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Amplificador de instrumentación RRO con micropotencia doble (40 µA) más apagado, offset de 500 µV y

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INA2321

ACTIVO
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Detalles del producto

Number of channels 2 Vs (max) (V) 5.5 Vs (min) (V) 2.5 Input offset (±) (max) (µV) 1000 Voltage gain (min) (V/V) 5 Voltage gain (max) (V/V) 1000 Noise at 1 kHz (typ) (nV√Hz) 100 Features Cost Optimized CMRR (min) (dB) 80 Input bias current (±) (max) (nA) 0.01 Iq (typ) (mA) 0.04 Bandwidth at min gain (typ) (MHz) 0.5 Gain error (±) (max) (%) 0.1 Operating temperature range (°C) -55 to 125 Rating Catalog Type Resistor Gain nonlinearity (±) (max) (%) 0.01 Output swing headroom (to negative supply) (typ) (V) 0.025 Output swing headroom (to positive supply) (typ) (V) -0.025 Input common mode headroom (to negative supply) (typ) (V) 0.55 Input common mode headroom (to positive supply) (typ) (V) -1.7 Noise at 0.1 Hz to 10 Hz (typ) (µVPP) 20
Number of channels 2 Vs (max) (V) 5.5 Vs (min) (V) 2.5 Input offset (±) (max) (µV) 1000 Voltage gain (min) (V/V) 5 Voltage gain (max) (V/V) 1000 Noise at 1 kHz (typ) (nV√Hz) 100 Features Cost Optimized CMRR (min) (dB) 80 Input bias current (±) (max) (nA) 0.01 Iq (typ) (mA) 0.04 Bandwidth at min gain (typ) (MHz) 0.5 Gain error (±) (max) (%) 0.1 Operating temperature range (°C) -55 to 125 Rating Catalog Type Resistor Gain nonlinearity (±) (max) (%) 0.01 Output swing headroom (to negative supply) (typ) (V) 0.025 Output swing headroom (to positive supply) (typ) (V) -0.025 Input common mode headroom (to negative supply) (typ) (V) 0.55 Input common mode headroom (to positive supply) (typ) (V) -1.7 Noise at 0.1 Hz to 10 Hz (typ) (µVPP) 20
TSSOP (PW) 14 32 mm² 5 x 6.4
  • LOW QUIESCENT CURRENT: 40µA/channel Shut Down: < 1µA
  • HIGH GAIN ACCURACY: G = 5, 0.02%, 2ppm/°C
  • GAIN SET WITH EXTERNAL RESISTORS
  • LOW OFFSET VOLTAGE: ±200µV
  • HIGH CMRR: 94dB
  • LOW BIAS CURRENT: 10pA
  • BANDWIDTH: 500kHz, G = 5V/V
  • RAIL-TO-RAIL OUTPUT SWING: (V+) - 0.02V
  • WIDE TEMPERATURE RANGE: -55°C to +125°C
  • SINGLE VERSION IN MSOP-8 PACKAGE AND DUAL VERSION IN TSSOP-14 PACKAGE
  • APPLICATIONS
    • INDUSTRIAL SENSOR AMPLIFIERS: Bridge, RTD, Thermistor, Position
    • PHYSIOLOGICAL AMPLIFIERS: ECG, EEG, EMG
    • A/D CONVERTER SIGNAL CONDITIONING
    • DIFFERENTIAL LINE RECEIVERS WITH GAIN
    • FIELD UTILITY METERS
    • PCMCIA CARDS
    • COMMUNICATION SYSTEMS
    • TEST EQUIPMENT
    • AUTOMOTIVE INSTRUMENTATION

All trademarks are the property of their respective owners.
  • LOW QUIESCENT CURRENT: 40µA/channel Shut Down: < 1µA
  • HIGH GAIN ACCURACY: G = 5, 0.02%, 2ppm/°C
  • GAIN SET WITH EXTERNAL RESISTORS
  • LOW OFFSET VOLTAGE: ±200µV
  • HIGH CMRR: 94dB
  • LOW BIAS CURRENT: 10pA
  • BANDWIDTH: 500kHz, G = 5V/V
  • RAIL-TO-RAIL OUTPUT SWING: (V+) - 0.02V
  • WIDE TEMPERATURE RANGE: -55°C to +125°C
  • SINGLE VERSION IN MSOP-8 PACKAGE AND DUAL VERSION IN TSSOP-14 PACKAGE
  • APPLICATIONS
    • INDUSTRIAL SENSOR AMPLIFIERS: Bridge, RTD, Thermistor, Position
    • PHYSIOLOGICAL AMPLIFIERS: ECG, EEG, EMG
    • A/D CONVERTER SIGNAL CONDITIONING
    • DIFFERENTIAL LINE RECEIVERS WITH GAIN
    • FIELD UTILITY METERS
    • PCMCIA CARDS
    • COMMUNICATION SYSTEMS
    • TEST EQUIPMENT
    • AUTOMOTIVE INSTRUMENTATION

All trademarks are the property of their respective owners.

The INA321 family is a series of rail-to-rail output, micropower CMOS instrumentation amplifiers that offer wide-range, single-supply, as well as bipolar-supply operation. The INA321 family provides low-cost, low-noise amplification of differential signals with micropower current consumption of 40µA. When shutdown, the INA321 has a quiescent current of less than 1µA. Returning to normal operations within nanoseconds, the shutdown feature makes the INA321 optimal for low-power battery or multiplexing applications.

Configured internally for 5V/V gain, the INA321 offers exceptional flexibility with user-programmable external gain resistors. The INA321 reduces common-mode error over frequency and with CMRR remaining high up to 3kHz, line noise and line harmonics are rejected.

The low-power design does not compromise on bandwidth or slew rate, making the INA321 ideal for driving sample Analog-to-Digital (A/D) converters as well as general-purpose applications. With high precision, low cost, and small packaging, the INA321 outperforms discrete designs, while offering reliability and performance.

The INA321 family is a series of rail-to-rail output, micropower CMOS instrumentation amplifiers that offer wide-range, single-supply, as well as bipolar-supply operation. The INA321 family provides low-cost, low-noise amplification of differential signals with micropower current consumption of 40µA. When shutdown, the INA321 has a quiescent current of less than 1µA. Returning to normal operations within nanoseconds, the shutdown feature makes the INA321 optimal for low-power battery or multiplexing applications.

Configured internally for 5V/V gain, the INA321 offers exceptional flexibility with user-programmable external gain resistors. The INA321 reduces common-mode error over frequency and with CMRR remaining high up to 3kHz, line noise and line harmonics are rejected.

The low-power design does not compromise on bandwidth or slew rate, making the INA321 ideal for driving sample Analog-to-Digital (A/D) converters as well as general-purpose applications. With high precision, low cost, and small packaging, the INA321 outperforms discrete designs, while offering reliability and performance.
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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Fecha
* Data sheet microPower Single-Supply CMOS Instrumentation Amplifier datasheet (Rev. D) 31 ene 2006
Application note Importance of Input Bias Current Return Paths in Instrumentation Amplifier Apps PDF | HTML 27 jul 2021
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 mar 2017

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Modelo de simulación

INA321 and INA2321 PSpice Model (Rev. B)

SBOC009B.ZIP (25 KB) - PSpice Model
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Herramienta de cálculo

ANALOG-ENGINEER-CALC — PC software analog engineer's calculator

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Productos y hardware compatibles

Productos y hardware compatibles
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Herramienta de simulación

PSPICE-FOR-TI — PSpice® para herramienta de diseño y simulación de TI

PSpice® para TI es un entorno de diseño y simulación que ayuda a evaluar la funcionalidad de los circuitos analógicos. Esta completa suite de diseño y simulación utiliza un motor de análisis analógico de Cadence®. Disponible sin ningún costo, PSpice para TI incluye una de las bibliotecas de modelos (...)
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Herramienta de simulación

TINA-TI — Programa de simulación analógica basado en SPICE

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
Guía del usuario: PDF
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Encapsulado Pines Símbolos CAD, huellas y modelos 3D
TSSOP (PW) 14 Ultra Librarian
Se aplican los Términos y condiciones estándar de TI para los elementos de evaluación.

Pedidos y calidad

Información incluida:
  • RoHS
  • REACH
  • Marcado del dispositivo
  • Acabado de plomo/material de la bola
  • Clasificación de nivel de sensibilidad a la humedad (MSL)/reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

Soporte y capacitación

Foros de TI E2E™ con asistencia técnica de los ingenieros de TI

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