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Amplificadores operacionales (op amps)
Amplificadores operacionales de alta velocidad (GBW ≥ 50 MHz)

BUF634A

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Búfer de alta velocidad de 210 MHz y 250 mA

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BUF634A

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Detalles del producto

Architecture Fixed Gain/Buffer Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 4.5 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 GBW (typ) (MHz) 240 BW at Acl (MHz) 210 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 3750 Vn at flatband (typ) (nV√Hz) 3.4 Vn at 1 kHz (typ) (nV√Hz) 3.4 Iq per channel (typ) (mA) 8.5 Vos (offset voltage at 25°C) (max) (mV) 60 Rail-to-rail No Features Adjustable BW/IQ/IOUT Rating Catalog Operating temperature range (°C) -40 to 125 Input bias current (max) (pA) 1600000 Offset drift (typ) (µV/°C) 175 Iout (typ) (mA) 250 2nd harmonic (dBc) -77 3rd harmonic (dBc) -79 Frequency of harmonic distortion measurement (MHz) 0.02
Architecture Fixed Gain/Buffer Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 4.5 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 GBW (typ) (MHz) 240 BW at Acl (MHz) 210 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 3750 Vn at flatband (typ) (nV√Hz) 3.4 Vn at 1 kHz (typ) (nV√Hz) 3.4 Iq per channel (typ) (mA) 8.5 Vos (offset voltage at 25°C) (max) (mV) 60 Rail-to-rail No Features Adjustable BW/IQ/IOUT Rating Catalog Operating temperature range (°C) -40 to 125 Input bias current (max) (pA) 1600000 Offset drift (typ) (µV/°C) 175 Iout (typ) (mA) 250 2nd harmonic (dBc) -77 3rd harmonic (dBc) -79 Frequency of harmonic distortion measurement (MHz) 0.02
HSOIC (DDA) 8 29.4 mm² 4.9 x 6 SOIC (D) 8 29.4 mm² 4.9 x 6 VSON (DRB) 8 9 mm² 3 x 3
  • Pin-Selected Bandwidth: 35 MHz to 210 MHz
  • High Output Current: 250 mA
  • Slew Rate: 3750 V/µs
  • Low Quiescent Current: 1.5 mA (35-MHz BW)
  • Wide Supply Range: ±2.25 V to ±18 V
  • Internal Output Current Limit
  • Thermal Shutdown Protection
  • Available in Packages with Thermal Pad
  • Extended Temperature Operation: –40°C to +125°C
  • Pin-Selected Bandwidth: 35 MHz to 210 MHz
  • High Output Current: 250 mA
  • Slew Rate: 3750 V/µs
  • Low Quiescent Current: 1.5 mA (35-MHz BW)
  • Wide Supply Range: ±2.25 V to ±18 V
  • Internal Output Current Limit
  • Thermal Shutdown Protection
  • Available in Packages with Thermal Pad
  • Extended Temperature Operation: –40°C to +125°C

The BUF634A device is a high-performance, high-fidelity, open-loop buffer that is capable of driving 250 mA of output current. The BUF634A is a 36-V device with an adjustable bandwidth of 35 MHz to 210 MHz, which is accomplished by varying the value of an external resistor between the V– and BW pins.

The BUF634A device can be used as a standalone open-loop driver, or used inside the feedback loop of a precision op amp to provide both high-precision and large output current drive with improved capacitive load drive.

For low-power applications, the BUF634A device operates on a 1.5-mA quiescent current with a 250-mA output, 3750-V/µs slew rate, and 35-MHz bandwidth. The device consumes 8.5-mA quiescent current in wide-bandwidth mode with a 210-MHz bandwidth. The BUF634A is fully protected by an internal current limit in its output stage and by thermal shutdown, making the device rugged and easy to use.

The BUF634A device is rated to function over the extended industrial temperature range of –40°C to +125°C. The BUF634A comes in three packages: D (SOIC), DRB (VSON), and DDA (HSOIC). The DRB (VSON) and DDA (HSOIC) packages have excellent thermal performance resulting from the thermal pad on the bottom side. The DRB package comes in a very small form factor of 3.0 mm × 3.0 mm, making the device a very suitable option for portable and size-constrained applications.

The BUF634A device is a high-performance, high-fidelity, open-loop buffer that is capable of driving 250 mA of output current. The BUF634A is a 36-V device with an adjustable bandwidth of 35 MHz to 210 MHz, which is accomplished by varying the value of an external resistor between the V– and BW pins.

The BUF634A device can be used as a standalone open-loop driver, or used inside the feedback loop of a precision op amp to provide both high-precision and large output current drive with improved capacitive load drive.

For low-power applications, the BUF634A device operates on a 1.5-mA quiescent current with a 250-mA output, 3750-V/µs slew rate, and 35-MHz bandwidth. The device consumes 8.5-mA quiescent current in wide-bandwidth mode with a 210-MHz bandwidth. The BUF634A is fully protected by an internal current limit in its output stage and by thermal shutdown, making the device rugged and easy to use.

The BUF634A device is rated to function over the extended industrial temperature range of –40°C to +125°C. The BUF634A comes in three packages: D (SOIC), DRB (VSON), and DDA (HSOIC). The DRB (VSON) and DDA (HSOIC) packages have excellent thermal performance resulting from the thermal pad on the bottom side. The DRB package comes in a very small form factor of 3.0 mm × 3.0 mm, making the device a very suitable option for portable and size-constrained applications.
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Documentación técnica

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* Data sheet BUF634A 36-V, 210-MHz, 250-mA Output, High-Speed Buffer datasheet (Rev. F) PDF | HTML 18 may 2021
Application note BUF634A and BUF634 Thermal Performance Comparison PDF | HTML 18 oct 2021
Application brief Optimizing LCR Meter Front-End Design for Accurate Impedance Measurements PDF | HTML 20 ene 2021
EVM User's guide BUF634Axxx Evaluation Module User's Guide PDF | HTML 22 dic 2020
Certificate BUF634ADDAEVM EU Declaration of Conformity (DoC) 03 ago 2020
Certificate BUF634ADRBEVM EU Declaration of Conformity (DoC) 03 ago 2020
Application brief Pairing up Op Amp and Buffer for Higher Output Power Plus Speed in ATE 07 jun 2019
EVM User's guide BUF634AD Evaluation module 18 feb 2019

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

BUF634ADDAEVM — Módulo de evaluación de búfer de alta velocidad de 210 MHz y 250 mA

The BUF634ADDAEVM is an evaluation module (EVM) for the BUF634A high-speed buffer in the DDA (8-pin SO8 w/thermal pad) package. The BUF634ADDAEVM features two BUF634AIDDA devices and is designed to quickly demonstrate the functionality and versatility of the buffer. Optionally, the buffers can be (...)
Guía del usuario: PDF | HTML
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Placa de evaluación

BUF634ADEVM — Módulo de evaluación de búfer de alta velocidad BUF634AD

The BUF634ADEVM is an evaluation module (EVM) for the BUF634A high-speed buffer in the D (8-pin SOIC) package. The BUF634ADEVM features two BUF634A devices and is designed to quickly demonstrate the functionality and versatility of the buffer. Optionally, the buffers can be configured as outputs (...)
Guía del usuario: PDF
No disponible en TI.com
Placa de evaluación

BUF634ADRBEVM — Módulo de evaluación de búfer de alta velocidad de 250 mA

The BUF634ADRBEVM is an evaluation module (EVM) for the BUF634A high-speed buffer in the DRB (8-pin DFN) package. The BUF634ADRBEVM features two BUF634AIDRB devices and is designed to quickly demonstrate the functionality and versatility of the buffer. Optionally, the buffers can be configured as (...)
Guía del usuario: PDF | HTML
No disponible en TI.com
Modelo de simulación

BUF634A TINA-TI SPICE Model (Rev. B)

SBOMAY2B.TSC (17 KB) - TINA-TI Spice Model
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Modelo de simulación

BUF634A for PSPICE Library (Rev. A)

SBOMB63A.ZIP (30 KB) - PSpice Model
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Herramienta de cálculo

ANALOG-ENGINEER-CALC — Calculadora para ingenieros analógicos

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 (...)
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VOLT-DIVIDER-CALC — Voltage divider calculation tool

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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 (...)
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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 (...)
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Diseños de referencia

TIDA-060029 — Diseño de referencia de interfaz analógica del medidor LCR

This reference design, TIDA-060029 demonstrates an analog signal chain solution for LCR Meter applications using an auto balancing impedance measurement method.
Design guide: PDF
Esquema: PDF
Paquete Pasadores Descargar
HSOIC (DDA) 8 Ver opciones
SOIC (D) 8 Ver opciones
VSON (DRB) 8 Ver opciones
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