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Radiofrecuencia y microondas
Amplificadores de RF
Amplificadores de ganancia variable (VGA) de RF

LMH6517

ACTIVO

Controlador ADC doble de 16 bits, baja potencia e IF y banda base de bajo ruido con ganancia control

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LMH6517

ACTIVO
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Detalles del producto

2nd harmonic (dBc) -65 3rd harmonic (dBc) 92 Frequency of harmonic distortion measurement (MHz) 150 Acl, min spec gain (V/V) 0.33 Architecture Fully Differential ADC Driver, VGA BW at Acl (MHz) 1200 Gain (max) (dB) 22 Gain (min) (dB) -9.5 Step size (dB) 0.5 Type RF VGA Iq per channel (typ) (mA) 80 Number of channels 2 Rating Catalog Operating temperature range (°C) -40 to 85 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.25 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 4.5 Vs (min) (V) 4.5 Vs (max) (V) 5.25
2nd harmonic (dBc) -65 3rd harmonic (dBc) 92 Frequency of harmonic distortion measurement (MHz) 150 Acl, min spec gain (V/V) 0.33 Architecture Fully Differential ADC Driver, VGA BW at Acl (MHz) 1200 Gain (max) (dB) 22 Gain (min) (dB) -9.5 Step size (dB) 0.5 Type RF VGA Iq per channel (typ) (mA) 80 Number of channels 2 Rating Catalog Operating temperature range (°C) -40 to 85 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.25 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 4.5 Vs (min) (V) 4.5 Vs (max) (V) 5.25
WQFN (RTV) 32 25 mm² (5 mm × 5 mm)
  • Accurate, 0.5dB Gain Steps
  • 200Ω Resistive, Differential Input
  • Low Impedance, Differential Output
  • Disable Function for Each Channel
  • Parallel Gain Control
  • SPI Compatible Serial Bus
  • Two Wire, Pulse Mode Control
  • On Chip Register Stores Gain Setting
  • Low Sensitivity of Linearity and Phase to Gain Setting
  • Single 5V Supply Voltage
  • Small Footprint WQFN Package

Key Specifications

  • OIP3: 43dBm @ 200MHz
  • Noise figure 5.5dB
  • Gain step size of 0.5dB
  • Gain step accuracy: 0.05dB
  • Frequency Range of 1200 MHz
  • Supply current 80mA per channel

All trademarks are the property of their respective owners.

  • Accurate, 0.5dB Gain Steps
  • 200Ω Resistive, Differential Input
  • Low Impedance, Differential Output
  • Disable Function for Each Channel
  • Parallel Gain Control
  • SPI Compatible Serial Bus
  • Two Wire, Pulse Mode Control
  • On Chip Register Stores Gain Setting
  • Low Sensitivity of Linearity and Phase to Gain Setting
  • Single 5V Supply Voltage
  • Small Footprint WQFN Package

Key Specifications

  • OIP3: 43dBm @ 200MHz
  • Noise figure 5.5dB
  • Gain step size of 0.5dB
  • Gain step accuracy: 0.05dB
  • Frequency Range of 1200 MHz
  • Supply current 80mA per channel

All trademarks are the property of their respective owners.

The LMH6517 contains two high performance, digitally controlled variable gain amplifiers (DVGA). It has been designed for use in narrowband and broadband IF sampling applications. Typically the LMH6517 drives a high performance ADC in a broad range of mixed signal and digital communication applications such as mobile radio and cellular base stations where automatic gain control (AGC) is required to increase system dynamic range.

Each channel of LMH6517 has an independent, digitally controlled attenuator and a high linearity, differential output amplifier. Each block has been optimized for low distortion and maximum system design flexibility. Each channel can be individually disabled for power savings.

The LMH6517 digitally controlled attenuator provides precise 0.5dB gain steps over a 31.5dB range. On chip digital latches are provided for local storage of the gain setting. Both serial and parallel programming options are provided. A Pulse mode is also offered where simple up or down commands can change the gain one step at a time.

The output amplifier has a differential output allowing large signal swings on a single 5V supply. The low impedance output provides maximum flexibility when driving filters or analog to digital converters.

The LMH6517 operates over the industrial temperature range of −40°C to +85°C. The LMH6517 is available in a 32-Pin, thermally enhanced, WQFN package.

The LMH6517 contains two high performance, digitally controlled variable gain amplifiers (DVGA). It has been designed for use in narrowband and broadband IF sampling applications. Typically the LMH6517 drives a high performance ADC in a broad range of mixed signal and digital communication applications such as mobile radio and cellular base stations where automatic gain control (AGC) is required to increase system dynamic range.

Each channel of LMH6517 has an independent, digitally controlled attenuator and a high linearity, differential output amplifier. Each block has been optimized for low distortion and maximum system design flexibility. Each channel can be individually disabled for power savings.

The LMH6517 digitally controlled attenuator provides precise 0.5dB gain steps over a 31.5dB range. On chip digital latches are provided for local storage of the gain setting. Both serial and parallel programming options are provided. A Pulse mode is also offered where simple up or down commands can change the gain one step at a time.

The output amplifier has a differential output allowing large signal swings on a single 5V supply. The low impedance output provides maximum flexibility when driving filters or analog to digital converters.

The LMH6517 operates over the industrial temperature range of −40°C to +85°C. The LMH6517 is available in a 32-Pin, thermally enhanced, WQFN package.
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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 Low Pwr, Low Noise, IF& Basebnd, Dual 16-bit ADC Drvr w/Dig Cntrlld Gain datasheet (Rev. K) 13/03/2013
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 AN-1719 Noise Figure Analysis Fully Differential Amplifier (Rev. A) 1/05/2013
Nota sobre la aplicación AN-2235 Ckt Brd Design for LMH6517/21/22 & Other H-Sp IF/RF F Amp (Rev. A) 1/05/2013
Nota sobre la aplicación Using High Speed Diff Amp to Drive ADCs (Rev. A) 26/04/2013
Guía del usuario High-IF Sub-sampling Receiver Subsystem User Guide 27/01/2012
Nota sobre la aplicación A Walk Along the Signal Path (High-Speed Signal Path) 30/03/2005

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

LMH6517EVAL-R1 — Placa de evaluación LMH6517 de amplificador de ganancia variable y control digital

The LMH6517EVAL evaluation board is designed to aid in the characterization of TI`s High Speed LMH6517 Digital Controlled Variable Gain Amplifier. Use the evaluation board as a guide for high frequency layout and as a tool to aid in device testing and characterization.

The LMH6517 DVGA has (...)

Guía del usuario: PDF
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Herramienta de cálculo

RF-CASCADE-CALC-TOOL — Calculadora en cascada de RF TI

A browser-based RF lineup analysis tool supporting up to 10 stages. Computes gain, NF, OIP3, OIP2, OP1dB, and derived metrics. Features dual-axis Plotly charts, P1dB saturation detection, and export to CSV
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