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

LM7121

ACTIVO

Amplificador de retroalimentación de tensión y baja potencia de 175 MHz

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LM7121

ACTIVO
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Detalles del producto

Architecture Voltage FB 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) 33 GBW (typ) (MHz) 175 BW at Acl (MHz) 235 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 1300 Vn at flatband (typ) (nV√Hz) 17 Vn at 1 kHz (typ) (nV√Hz) 17 Iq per channel (typ) (mA) 4.8 Vos (offset voltage at 25°C) (max) (mV) 8 Rail-to-rail No Features C-Load Drive Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 93 Input bias current (max) (pA) 9500000 Offset drift (typ) (µV/°C) 15 Iout (typ) (mA) 52
Architecture Voltage FB 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) 33 GBW (typ) (MHz) 175 BW at Acl (MHz) 235 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 1300 Vn at flatband (typ) (nV√Hz) 17 Vn at 1 kHz (typ) (nV√Hz) 17 Iq per channel (typ) (mA) 4.8 Vos (offset voltage at 25°C) (max) (mV) 8 Rail-to-rail No Features C-Load Drive Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 93 Input bias current (max) (pA) 9500000 Offset drift (typ) (µV/°C) 15 Iout (typ) (mA) 52
SOIC (D) 8 29.4 mm² 4.9 x 6 SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8
  • (Typical Unless Otherwise Noted).
    VS = ±15 V
  • Easy to use Voltage Feedback Topology
  • Stable with Unlimited Capacitive Loads
  • Tiny SOT23-5 Package — Typical
    Circuit Layout Takes Half the
    Space Of SO-8 Designs
  • Unity Gain Frequency: 175 MHz
  • Bandwidth (−3 dB, AV = +1, RL
    = 100Ω): 235 MHz
  • Slew Rate: 1300V/µs
  • Supply Voltages:
    • SO-8: 5 V to ±15 V
    • SOT23-5: 5 V to ±5 V
  • Characterized for: +5 V, ±5 V, ±15 V
  • Low Supply Current: 5.3 mA
  • (Typical Unless Otherwise Noted).
    VS = ±15 V
  • Easy to use Voltage Feedback Topology
  • Stable with Unlimited Capacitive Loads
  • Tiny SOT23-5 Package — Typical
    Circuit Layout Takes Half the
    Space Of SO-8 Designs
  • Unity Gain Frequency: 175 MHz
  • Bandwidth (−3 dB, AV = +1, RL
    = 100Ω): 235 MHz
  • Slew Rate: 1300V/µs
  • Supply Voltages:
    • SO-8: 5 V to ±15 V
    • SOT23-5: 5 V to ±5 V
  • Characterized for: +5 V, ±5 V, ±15 V
  • Low Supply Current: 5.3 mA

The LM7121 is a high performance operational amplifier which addresses the increasing AC performance needs of video and imaging applications, and the size and power constraints of portable applications.

The LM7121 can operate over a wide dynamic range of supply voltages, from 5 V (single supply) up to ±15V (see Application and Implementation for more details). It offers an excellent speed-power product delivering 1300 V/µs and 235 MHz Bandwidth (−3 dB, AV = +1). Another key feature of this operational amplifier is stability while driving unlimited capacitive loads.

Due to its tiny SOT23-5 package, the LM7121 is ideal for designs where space and weight are the critical parameters. The benefits of the tiny package are evident in small portable electronic devices, such as cameras, and PC video cards. Tiny amplifiers are so small that they can be placed anywhere on a board close to the signal source or near the input to an A/D converter.

The LM7121 is a high performance operational amplifier which addresses the increasing AC performance needs of video and imaging applications, and the size and power constraints of portable applications.

The LM7121 can operate over a wide dynamic range of supply voltages, from 5 V (single supply) up to ±15V (see Application and Implementation for more details). It offers an excellent speed-power product delivering 1300 V/µs and 235 MHz Bandwidth (−3 dB, AV = +1). Another key feature of this operational amplifier is stability while driving unlimited capacitive loads.

Due to its tiny SOT23-5 package, the LM7121 is ideal for designs where space and weight are the critical parameters. The benefits of the tiny package are evident in small portable electronic devices, such as cameras, and PC video cards. Tiny amplifiers are so small that they can be placed anywhere on a board close to the signal source or near the input to an A/D converter.
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Documentación técnica

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* Data sheet LM7121 235-MHz Tiny Low Power Voltage Feedback Amplifier datasheet (Rev. A) PDF | HTML 01 oct 2014
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.

Placa de evaluación

LMH730227 — Placa de evaluación para amplificador operacional simple de alta velocidad en encapsulado SOIC de 8

Texas Instruments offers this unpopulated Evaluation Board to aid in the evaluation and testing of high-speed Op Amp that are offered in the 8-Pin SOIC package. Resistors, capacitors, or any other surface-mount components can be easily mounted on this board in the desired circuit configuration. The (...)

Guía del usuario: PDF
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Modelo de simulación

LM7121 PSPICE Model

SNOM203.ZIP (2 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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Herramienta de cálculo

VOLT-DIVIDER-CALC — Voltage divider calculation tool

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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 (...)
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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 (...)
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Encapsulado Pines Símbolos CAD, huellas y modelos 3D
SOIC (D) 8 Ultra Librarian
SOT-23 (DBV) 5 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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