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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 BW at Acl (MHz) 650 Acl, min spec gain (V/V) 0.27 Architecture Fully Differential ADC Driver Features Digital Gain Set, Shutdown, Single-ended to Differential conversion Slew rate (typ) (V/µs) 2900 Iq per channel (typ) (mA) 143 Gain (max) (dB) 20 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 BW at Acl (MHz) 650 Acl, min spec gain (V/V) 0.27 Architecture Fully Differential ADC Driver Features Digital Gain Set, Shutdown, Single-ended to Differential conversion Slew rate (typ) (V/µs) 2900 Iq per channel (typ) (mA) 143 Gain (max) (dB) 20 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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Tipo Título 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
EVM User's guide PGA870EVM User Guide (Rev. A) 03 feb 2010

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® 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 (...)
Guía del usuario: PDF
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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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