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Amplificadores de ganancia programable y variable (PGA y VGA)

PGA870

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Amplificador de ganancia programable totalmente diferencial de alta velocidad

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PGA870

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Detalles del producto

PGA/VGA PGA Number of channels 1 Vs (min) (V) 4.75 Vs (max) (V) 5.25 Input type Differential Output type Differential Interface type Digital Gain Set BW at Acl (MHz) 650 Acl, min spec gain (V/V) 0.27 Voltage gain (min) (V/V) 0.27 Voltage gain (max) (V/V) 10 Gain (max) (dB) 20 Architecture Fully Differential ADC Driver Features Shutdown, Single-ended to Differential conversion Vos (offset voltage at 25°C) (typ) (mV) 5 Input voltage noise (typ) (µV√Hz) 0.03 Slew rate (typ) (V/µs) 2900 Iq per channel (typ) (mA) 143 Rating Catalog Operating temperature range (°C) -40 to 85
PGA/VGA PGA Number of channels 1 Vs (min) (V) 4.75 Vs (max) (V) 5.25 Input type Differential Output type Differential Interface type Digital Gain Set BW at Acl (MHz) 650 Acl, min spec gain (V/V) 0.27 Voltage gain (min) (V/V) 0.27 Voltage gain (max) (V/V) 10 Gain (max) (dB) 20 Architecture Fully Differential ADC Driver Features Shutdown, Single-ended to Differential conversion Vos (offset voltage at 25°C) (typ) (mV) 5 Input voltage noise (typ) (µV√Hz) 0.03 Slew rate (typ) (V/µs) 2900 Iq per channel (typ) (mA) 143 Rating Catalog Operating temperature range (°C) -40 to 85
VQFN (RHD) 28 25 mm² 5 x 5
  • Wideband +5-V Operation: 650-MHz Bandwidth
  • Low Impedance, Voltage Mode Output
  • Wide Gain Range: –11.5 dB to +20 dB
  • Precise 0.5-dB Gain Steps
    Step-to-Step Gain Error = ±0.03 dB
  • HD2: –93 dBc at 100 MHz
  • HD3: –88 dBc at 100 MHz
  • IMD3: –98 dBc at 100 MHz, –95 dBc at 200 MHz
  • OIP3: +47 dBm at 100 MHz;
    Exceeds +45 dBm for Frequencies to 300 MHz
  • Flexible Gain Control Interface:
    • Supports latched and unlatched options
    • Gain may be set in power-down state
    • Fast setup and hold times: 2.5 ns
  • Low Disable Current: 2 mA
  • Pb-Free (RoHS-Compliant) and Green Package
  • APPLICATIONS
    • Programmable Gain IF Amplifier:
      • Differential signal chains
      • Single-ended to differential conversion
    • Fast Gain Control Loops for:
      • Test/measurement
      • Digital radio signal chains
    • ADC Driver for Wireless Base Station Signal Chains: GSM, WCDMA, MC-GSM
    • Radar/Ranging Systems

    PowerPAD is a trademark of Texas Instruments.
    All other trademarks are the property of their respective owners.
  • Wideband +5-V Operation: 650-MHz Bandwidth
  • Low Impedance, Voltage Mode Output
  • Wide Gain Range: –11.5 dB to +20 dB
  • Precise 0.5-dB Gain Steps
    Step-to-Step Gain Error = ±0.03 dB
  • HD2: –93 dBc at 100 MHz
  • HD3: –88 dBc at 100 MHz
  • IMD3: –98 dBc at 100 MHz, –95 dBc at 200 MHz
  • OIP3: +47 dBm at 100 MHz;
    Exceeds +45 dBm for Frequencies to 300 MHz
  • Flexible Gain Control Interface:
    • Supports latched and unlatched options
    • Gain may be set in power-down state
    • Fast setup and hold times: 2.5 ns
  • Low Disable Current: 2 mA
  • Pb-Free (RoHS-Compliant) and Green Package
  • APPLICATIONS
    • Programmable Gain IF Amplifier:
      • Differential signal chains
      • Single-ended to differential conversion
    • Fast Gain Control Loops for:
      • Test/measurement
      • Digital radio signal chains
    • ADC Driver for Wireless Base Station Signal Chains: GSM, WCDMA, MC-GSM
    • Radar/Ranging Systems

    PowerPAD is a trademark of Texas Instruments.
    All other trademarks are the property of their respective owners.

The PGA870 is a wideband programmable-gain amplifier (PGA) for high-speed signal chain and data acquisition systems. The PGA870 has been optimized to provide high bandwidth, low distortion, and low noise, making it ideally suited as a 14-bit analog-to-digital converter (ADC) driver for wireless base station signal chain applications. The wide gain range of –11.5 dB to +20 dB can be adjusted in 0.5-dB gain steps through a 6-bit control word applied to the parallel interface. The gain control interface may be configured as a level-triggered latch or an edge-triggered latch, or it may be placed in an unlatched (transparent) mode. In addition to the 6-bit gain control, the PGA870 contains a power-down pin (PD) that can be used to put the device into a low-current, power-down mode. In this mode, the quiescent current drops to 2 mA, but the gain control circuitry remains active, allowing the gain of the PGA870 to be set before device power-up. The PGA870 is offered in a QFN-28 PowerPAD™ package.

The PGA870 is a wideband programmable-gain amplifier (PGA) for high-speed signal chain and data acquisition systems. The PGA870 has been optimized to provide high bandwidth, low distortion, and low noise, making it ideally suited as a 14-bit analog-to-digital converter (ADC) driver for wireless base station signal chain applications. The wide gain range of –11.5 dB to +20 dB can be adjusted in 0.5-dB gain steps through a 6-bit control word applied to the parallel interface. The gain control interface may be configured as a level-triggered latch or an edge-triggered latch, or it may be placed in an unlatched (transparent) mode. In addition to the 6-bit gain control, the PGA870 contains a power-down pin (PD) that can be used to put the device into a low-current, power-down mode. In this mode, the quiescent current drops to 2 mA, but the gain control circuitry remains active, allowing the gain of the PGA870 to be set before device power-up. The PGA870 is offered in a QFN-28 PowerPAD™ package.
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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Fecha
* Data sheet High-Speed, Fully Differential, Programmable Gain Amplifier datasheet (Rev. A) 15 feb 2011
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 mar 2017
User guide TSW3725 Evaluation Module 25 oct 2011

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

PGA870EVM — Módulo de evaluación PGA870

The The PGA870EVM is an evaluation module (EVM) for the PGA870 wideband programmable gain amplifier (PGA) for high-speed signal chain and data acquisition systems.

The PGA870EVM allows for evaluation of all aspects of the PGA870 device. Complete circuit descriptions, schematic diagrams, and a bill (...)

Guía del usuario: PDF
No disponible en TI.com
Placa de evaluación

TSW3085EVM — Placa de evaluación de cadena de señal de transmisión de banda ancha y diseño de referencia

The TSW3085 Evalutaion Module is a circuit board that allows system designers to evaluate the combined performance of Texas Instruments' transmit signal chain with the LMK04806B (formally National Semiconductor) low noise clock generator/jitter cleaner. For ease of use as a complete RF transmit (...)

Guía del usuario: PDF
No disponible en TI.com
Modelo de simulación

PGA870 PSpice Model (Rev. A)

SLOM170A.ZIP (80 KB) - PSpice Model
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Modelo de simulación

PGA870 TINA-TI Reference Design

SLOM168.TSC (115 KB) - TINA-TI Reference Design
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Modelo de simulación

PGA870 TINA-TI Spice Model

SLOM169.ZIP (65 KB) - TINA-TI Spice Model
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Herramienta de simulación

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

PSpice® para TI es un entorno de diseño y simulación que ayuda a evaluar la funcionalidad de los circuitos analógicos. Esta completa suite de diseño y simulación utiliza un motor de análisis analógico de Cadence®. Disponible sin ningún costo, PSpice para TI incluye una de las bibliotecas de modelos (...)
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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
View Options
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
VQFN (RHD) 28 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

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