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OPA698

ACTIVO

Amplificador limitador de voltaje de banda ancha, estable y de ganancia unitaria

Detalles del producto

Architecture Voltage FB Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 5 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12 GBW (typ) (MHz) 300 BW at Acl (MHz) 650 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 1800 Vn at flatband (typ) (nV√Hz) 4 Vn at 1 kHz (typ) (nV√Hz) 5.9 Iq per channel (typ) (mA) 15.5 Vos (offset voltage at 25°C) (max) (mV) 5 Rail-to-rail No Features Integrated Clamps Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 61 Input bias current (max) (pA) 10000000 Offset drift (typ) (µV/°C) 15 Iout (typ) (mA) 190 2nd harmonic (dBc) 74 3rd harmonic (dBc) 87 Frequency of harmonic distortion measurement (MHz) 5
Architecture Voltage FB Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 5 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12 GBW (typ) (MHz) 300 BW at Acl (MHz) 650 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 1800 Vn at flatband (typ) (nV√Hz) 4 Vn at 1 kHz (typ) (nV√Hz) 5.9 Iq per channel (typ) (mA) 15.5 Vos (offset voltage at 25°C) (max) (mV) 5 Rail-to-rail No Features Integrated Clamps Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 61 Input bias current (max) (pA) 10000000 Offset drift (typ) (µV/°C) 15 Iout (typ) (mA) 190 2nd harmonic (dBc) 74 3rd harmonic (dBc) 87 Frequency of harmonic distortion measurement (MHz) 5
SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm)
  • High linearity near limiting
  • Fast recovery from overdrive: 1ns
  • Limiting voltage accuracy: ±5mV
  • –3db bandwidth (g = +1): 650MHz
  • Gain bandwidth product: 300MHz
  • Slew rate: 1800V/µs
  • ±5V and +5V supply operation
  • High-gain version available: OPA699
  • High linearity near limiting
  • Fast recovery from overdrive: 1ns
  • Limiting voltage accuracy: ±5mV
  • –3db bandwidth (g = +1): 650MHz
  • Gain bandwidth product: 300MHz
  • Slew rate: 1800V/µs
  • ±5V and +5V supply operation
  • High-gain version available: OPA699

The OPA698 is a wide-band, unity-gain stable voltage-feedback op amp that offers bipolar output voltage limiting. Two buffered limiting voltages take control of the output when attempting to drive beyond these limits. This new output limiting architecture holds the limiter offset error to ±5mV.

The op amp operates linearly to within 20mV of the output limit voltages. The combination of a narrow nonlinear range and the low limiting offset allows the limiting voltages to be set within 100mV of the desired linear output range. A fast 1ns recovery from limiting provides overdrive signals that are transparent to the signal channel. Implementing the limiting function at the output, as opposed to the input, gives the specified limiting accuracy for any gain, and allows the OPA698 to be used in all standard op-amp applications.

Nonlinear analog signal processing benefits from the ability of the OPA698 to sharply transition from linear operation to output limiting. The quick recovery time supports high-speed applications.

The OPA698 is available in an industry-standard pin-out SOIC-8 package. For higher gain, or transimpedance applications that require output limiting with fast recovery, consider the OPA699.

The OPA698 is a wide-band, unity-gain stable voltage-feedback op amp that offers bipolar output voltage limiting. Two buffered limiting voltages take control of the output when attempting to drive beyond these limits. This new output limiting architecture holds the limiter offset error to ±5mV.

The op amp operates linearly to within 20mV of the output limit voltages. The combination of a narrow nonlinear range and the low limiting offset allows the limiting voltages to be set within 100mV of the desired linear output range. A fast 1ns recovery from limiting provides overdrive signals that are transparent to the signal channel. Implementing the limiting function at the output, as opposed to the input, gives the specified limiting accuracy for any gain, and allows the OPA698 to be used in all standard op-amp applications.

Nonlinear analog signal processing benefits from the ability of the OPA698 to sharply transition from linear operation to output limiting. The quick recovery time supports high-speed applications.

The OPA698 is available in an industry-standard pin-out SOIC-8 package. For higher gain, or transimpedance applications that require output limiting with fast recovery, consider the OPA699.

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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos OPA698 Unity-Gain Stable, Wideband Voltage Limiting Amplifier datasheet (Rev. E) PDF | HTML 10/04/2025
Libro electrónico The Signal e-book: A compendium of blog posts on op amp design topics PDF | HTML 28/03/2017
Nota sobre la aplicación RLC Filter Design for ADC Interface Applications (Rev. A) 13/05/2015
Nota sobre la aplicación ADC Input Protection 4/09/2013
Nota sobre la aplicación Video Designs Using High-Speed Amplifiers (Rev. A) 3/02/2005
Nota sobre la aplicación Noise Analysis for High Speed Op Amps (Rev. A) 17/01/2005
Nota sobre la aplicación ADS5500, OPA695: PC Board Layout for Low Distortion High-Speed ADC Drivers 22/04/2004
Nota sobre la aplicación Measuring Board Parasitics in High-Speed Analog Design 7/07/2003

Diseño y desarrollo

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Placa de evaluación

DEM-OPA-SO-1A — Módulo de evaluación de amplificador operacional simple para encapsulado SO-8

The DEM-OPA-SO-1A demonstration fixture helps designers evaluate the operation and performance of TI's High Speed, Wide Bandwidth Operational Amplifiers. This unpopulated PC board is compatible with products offered in the 8-lead SOIC (D) package.

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Modelo de simulación

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SBOC045.ZIP (1 KB) - Modelo PSpice
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Herramienta de cálculo

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La calculadora del ingeniero analógico está diseñada para acelerar muchos de los cálculos repetitivos que los ingenieros de diseño de circuitos analógicos utilizan de forma habitual. Esta herramienta para PC proporciona una interfaz gráfica con una lista de varios cálculos comunes que van desde el (...)

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Soporte y capacitación

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

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