Amplificador de ganancia programable de precisión de ancho de banda amplio y bajo ruido

Detalles del producto

PGA/VGA PGA Number of channels 1 Vs (min) (V) 8 Vs (max) (V) 36 Input type Differential Output type Single-ended Vos (offset voltage at 25°C) (typ) (mV) 0.05 Input offset drift (±) (typ) (µV/°C) 0.2 Input voltage noise (typ) (µV√Hz) 0.0078 Interface type GPIO Noise at 0.1 Hz to 10 Hz (typ) (VPP) 0.00000026 BW at Acl (MHz) 10 Acl, min spec gain (V/V) 0.125 Architecture Bipolar Features Overvoltage protection, Super-beta Slew rate (typ) (V/µs) 35 Iq per channel (typ) (mA) 4.3 Gain (max) (dB) 24 Gain error (typ) (%) 0.02 Gain drift (max) (ppm/°C) 2 Rating Catalog Operating temperature range (°C) -40 to 125
PGA/VGA PGA Number of channels 1 Vs (min) (V) 8 Vs (max) (V) 36 Input type Differential Output type Single-ended Vos (offset voltage at 25°C) (typ) (mV) 0.05 Input offset drift (±) (typ) (µV/°C) 0.2 Input voltage noise (typ) (µV√Hz) 0.0078 Interface type GPIO Noise at 0.1 Hz to 10 Hz (typ) (VPP) 0.00000026 BW at Acl (MHz) 10 Acl, min spec gain (V/V) 0.125 Architecture Bipolar Features Overvoltage protection, Super-beta Slew rate (typ) (V/µs) 35 Iq per channel (typ) (mA) 4.3 Gain (max) (dB) 24 Gain error (typ) (%) 0.02 Gain drift (max) (ppm/°C) 2 Rating Catalog Operating temperature range (°C) -40 to 125
VQFN (RGT) 16 9 mm² 3 x 3
  • Differential to single-ended conversion
  • Eight pin-programmable binary gains
    • G (V/V) = ⅛, ¼, ½, 1, 2, 4, 8, and 16
  • Low gain error drift: 2ppm/°C (max)
  • Faster signal processing:
    • Wide bandwidth: 10MHz at all gains
    • High slew rate: 35V/µs
    • Settling time: 500ns to 0.01%, 950ns to 0.0015%
    • Input stage noise: 7.8nV/√Hz at G = 16V/V
    • Filter option to achieve better SNR
  • Input overvoltage protection to ±40V beyond supplies
  • Input-stage supply range:
    • Single supply: 8V to 36V
    • Dual supply: ±4V to ±18V
  • Independent output power-supply pins
  • Output-stage supply range:
    • Single supply: 4.5V to 36V
    • Dual supply: ±2.25V to ±18V
  • Specified temperature range: ­–40°C to +125°C
  • Small package: 3mm × 3mm QFN
  • Differential to single-ended conversion
  • Eight pin-programmable binary gains
    • G (V/V) = ⅛, ¼, ½, 1, 2, 4, 8, and 16
  • Low gain error drift: 2ppm/°C (max)
  • Faster signal processing:
    • Wide bandwidth: 10MHz at all gains
    • High slew rate: 35V/µs
    • Settling time: 500ns to 0.01%, 950ns to 0.0015%
    • Input stage noise: 7.8nV/√Hz at G = 16V/V
    • Filter option to achieve better SNR
  • Input overvoltage protection to ±40V beyond supplies
  • Input-stage supply range:
    • Single supply: 8V to 36V
    • Dual supply: ±4V to ±18V
  • Independent output power-supply pins
  • Output-stage supply range:
    • Single supply: 4.5V to 36V
    • Dual supply: ±2.25V to ±18V
  • Specified temperature range: ­–40°C to +125°C
  • Small package: 3mm × 3mm QFN

The PGA849 is a wide-bandwidth, low-noise programmable gain instrumentation amplifier for differential-to-single-ended conversion. The PGA849 is equipped with eight binary gain settings, from an attenuating gain of 0.125V/V to a maximum of 16V/V, using three digital gain selection pins.

The PGA849 architecture is optimized to drive inputs of high-resolution, precision analog-to-digital converters (ADCs) with sampling rates up to 1MSPS without the need for an additional ADC driver. The output-stage power supplies are decoupled from the input stage to protect the ADC or downstream device against overdrive damage.

The super-beta input transistors offer an impressively low input bias current, which in turn provides a very low input current noise density of 0.3pA/√Hz, making the PGA849 a versatile choice for virtually any sensor type. The low-noise current-feedback front-end architecture offers exceptional gain flatness even at high frequencies, making the PGA849 an excellent high-impedance sensor readout device. Integrated protection circuitry on the input pins handles overvoltages of up to ±40V beyond the power-supply voltages.

The PGA849 is a wide-bandwidth, low-noise programmable gain instrumentation amplifier for differential-to-single-ended conversion. The PGA849 is equipped with eight binary gain settings, from an attenuating gain of 0.125V/V to a maximum of 16V/V, using three digital gain selection pins.

The PGA849 architecture is optimized to drive inputs of high-resolution, precision analog-to-digital converters (ADCs) with sampling rates up to 1MSPS without the need for an additional ADC driver. The output-stage power supplies are decoupled from the input stage to protect the ADC or downstream device against overdrive damage.

The super-beta input transistors offer an impressively low input bias current, which in turn provides a very low input current noise density of 0.3pA/√Hz, making the PGA849 a versatile choice for virtually any sensor type. The low-noise current-feedback front-end architecture offers exceptional gain flatness even at high frequencies, making the PGA849 an excellent high-impedance sensor readout device. Integrated protection circuitry on the input pins handles overvoltages of up to ±40V beyond the power-supply voltages.

Descargar Ver vídeo con transcripción Video

Productos similares que pueden interesarle

open-in-new Comparar alternativas
Misma funcionalidad con diferente configuración de pines que el dispositivo comparado
PGA855 ACTIVO Amplificador de instrumentación de ruido bajo, ancho de banda amplio y salida totalmente diferencial Differential output version

Documentación técnica

star =Principal documentación para este producto seleccionada por TI
No se encontraron resultados. Borre su búsqueda y vuelva a intentarlo.
Ver todo 4
Tipo Título Fecha
* Data sheet PGA849 Low-Noise, Wide-Bandwidth, Precision Programmable Gain Instrumentation Amplifier datasheet PDF | HTML 29 mar 2024
Product overview PGA855 and PGA849 Product Overview (Rev. A) PDF | HTML 11 jul 2024
Application note Achieve High SNR with the PGA855, Fully Differential Programmable-Gain Amplifier PDF | HTML 21 mar 2024
EVM User's guide PGA849 Evaluation Module User's Guide PDF | HTML 20 mar 2024

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.

Placa de evaluación

PGA849EVM — Módulo de evaluación PGA849

El PGA849EVM proporciona acceso a las características y mide el rendimiento del dispositivo PGA849. El PGA849 es un amplificador de instrumentación (PGA) de precisión, de ganancia programable y ancho de banda amplio para conversión diferencial a extremo único optimizado para controlar (...)
Guía del usuario: PDF | HTML
Modelo de simulación

PGA849 PSpice Model

SBOMCI6.ZIP (28 KB) - PSpice Model
Modelo de simulación

PGA849 Spice Model (Generic)

SBOMCI5.ZIP (6 KB) - TISpice Model
Modelo de simulación

PGA849 TINA-TI Reference Design

SBOMCI8.TSC (103 KB) - TINA-TI Reference Design
Modelo de simulación

PGA849 TINA-TI Spice Model

SBOMCI7.ZIP (13 KB) - TINA-TI Spice Model
Herramienta de cálculo

PGA849-CALC PGA849 Input and Output Range Calculator

Excel based calculator tool to provide user friendly, visual interface to support customer calculate inout and out range of the PGA849 based on user inputs of Supply voltage.
Productos y hardware compatibles

Productos y hardware compatibles

Productos
Amplificadores de ganancia programable y variable (PGA y VGA)
PGA849 Amplificador de ganancia programable de precisión de ancho de banda amplio y bajo ruido
Opciones de descarga
Herramienta de simulación

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

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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
Diseños de referencia

TIDA-010945 — Diseño de referencia de cadena de señales de precisión para multímetros digitales

Este diseño de referencia explica la teoría, el diseño y las pruebas de una cadena de señales de alto rendimiento para mediciones de CC. La aplicación principal es como multímetro digital (DMM). Sin embargo, el diseño también se puede utilizar en otras aplicaciones, como la adquisición de datos (...)
Design guide: PDF
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
VQFN (RGT) 16 Ultra Librarian

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

El contenido lo proporcionan “tal como está” TI y los colaboradores de la comunidad y no constituye especificaciones de TI. Consulte los términos de uso.

Si tiene preguntas sobre la calidad, el paquete o el pedido de productos de TI, consulte el soporte de TI. ​​​​​​​​​​​​​​

Videos