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OPA2891

ACTIVO

Amplificador operacional de 180 MHz y 0.95 nV√Hz y doble canal con distorsión armónica total (THD) u

Detalles del producto

Architecture Voltage FB Number of channels 2 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 9 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 GBW (typ) (MHz) 180 BW at Acl (MHz) 180 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 105 Vn at flatband (typ) (nV√Hz) 0.95 Vn at 1 kHz (typ) (nV√Hz) 1 Iq per channel (typ) (mA) 7.5 Vos (offset voltage at 25°C) (max) (mV) 1 Rail-to-rail No Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 106 Input bias current (max) (pA) 20000000 Offset drift (typ) (µV/°C) 1 Iout (typ) (mA) 200 2nd harmonic (dBc) 91 3rd harmonic (dBc) 91 Frequency of harmonic distortion measurement (MHz) 1
Architecture Voltage FB Number of channels 2 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 9 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 GBW (typ) (MHz) 180 BW at Acl (MHz) 180 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 105 Vn at flatband (typ) (nV√Hz) 0.95 Vn at 1 kHz (typ) (nV√Hz) 1 Iq per channel (typ) (mA) 7.5 Vos (offset voltage at 25°C) (max) (mV) 1 Rail-to-rail No Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 106 Input bias current (max) (pA) 20000000 Offset drift (typ) (µV/°C) 1 Iout (typ) (mA) 200 2nd harmonic (dBc) 91 3rd harmonic (dBc) 91 Frequency of harmonic distortion measurement (MHz) 1
HVSSOP (DGN) 8 14.7 mm² 3 x 4.9 SOIC (D) 8 29.4 mm² 4.9 x 6
  • Ultra-low 0.95nV/√Hz voltage noise
  • High speed:
    • 180MHz unity gain bandwidth
    • 140MHz bandwidth at a gain of 2V/V (–1V/V)
    • 105V/µs slew rate
  • Very low distortion
    • THD = –91dBc (f = 1MHz, RL = 150Ω)
    • THD = –100dBc (f = 1MHz, RL = 1kΩ)
    • THD+N = –137dBc (f = 1kHz, BW = 80kHz)
  • Low 0.2mV (typical) and 1mV (maximum) input offset voltage at 25°C
  • 200mA output current drive (typical)
  • Typical operation from ±4.5V to ±18V
  • Offset nulling pins on the OPA891
  • Ultra-low 0.95nV/√Hz voltage noise
  • High speed:
    • 180MHz unity gain bandwidth
    • 140MHz bandwidth at a gain of 2V/V (–1V/V)
    • 105V/µs slew rate
  • Very low distortion
    • THD = –91dBc (f = 1MHz, RL = 150Ω)
    • THD = –100dBc (f = 1MHz, RL = 1kΩ)
    • THD+N = –137dBc (f = 1kHz, BW = 80kHz)
  • Low 0.2mV (typical) and 1mV (maximum) input offset voltage at 25°C
  • 200mA output current drive (typical)
  • Typical operation from ±4.5V to ±18V
  • Offset nulling pins on the OPA891

The OPA891 and OPA2891 (OPAx891) are ultra-low voltage noise, high-speed voltage feedback amplifiers that are an excellent choice for applications requiring low voltage noise, including communications and imaging. The single-amplifier OPA891 and the dual-amplifier OPA2891 offer very good ac performance with 140MHz bandwidth, gain (G) = 2V/V, 105V/µs slew rate, and 70ns settling time (0.1%). The OPAx891 are unity-gain stable with 180MHz bandwidth. These amplifiers have a high drive capability of 200mA and draw only 7.5mA supply current per channel. With –100dBc of total harmonic distortion (THD) at f = 1MHz and a very low noise of 0.95nV/√Hz, the OPAx891 are designed for applications requiring low distortion and low noise such as buffering analog-to-digital converters.

The OPA891 and OPA2891 (OPAx891) are ultra-low voltage noise, high-speed voltage feedback amplifiers that are an excellent choice for applications requiring low voltage noise, including communications and imaging. The single-amplifier OPA891 and the dual-amplifier OPA2891 offer very good ac performance with 140MHz bandwidth, gain (G) = 2V/V, 105V/µs slew rate, and 70ns settling time (0.1%). The OPAx891 are unity-gain stable with 180MHz bandwidth. These amplifiers have a high drive capability of 200mA and draw only 7.5mA supply current per channel. With –100dBc of total harmonic distortion (THD) at f = 1MHz and a very low noise of 0.95nV/√Hz, the OPAx891 are designed for applications requiring low distortion and low noise such as buffering analog-to-digital converters.

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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Fecha
* Data sheet OPAx891 180MHz, 0.95nV/√Hz, Ultra-Low THD Operational Amplifiers datasheet (Rev. B) PDF | HTML 23 jul 2024

Diseño y desarrollo

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Placa de evaluación

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The DEM-OPA-MSOP-2A demonstration fixture helps designers evaluate the operation and performance of TI's dual, high speed, wideband operational amplifiers. This unpopulated PC board is compatible with products offered in the 8-lead MSOP (DGK) package.
 
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Guía del usuario: PDF
Placa de evaluación

DEM-OPA-SO-2A — Módulo de evaluación de amplificador operacional doble para encapsulado SO-8

The DEM-OPA-SO-2A demonstration evaluation module helps designers evaluate the operation and performance of TI dual-channel, high-speed, wideband operational amplifiers. This unpopulated printed-circuit board (PCB) is compatible with products offered in the 8-lead SOIC (D) package.

For more (...)

Guía del usuario: PDF
Herramienta de cálculo

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

The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)

Productos y hardware compatibles

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Herramienta de cálculo

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Herramienta de simulación

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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
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
HVSSOP (DGN) 8 Ultra Librarian
SOIC (D) 8 Ultra Librarian

Pedidos y calidad

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  • 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

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