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BUF20800

ACTIVO

Generador de tensión gamma de 18 canales con dos canales VCOM programables

Detalles del producto

Display type LCD unipolar IC integration Gamma buffer, VCOM Vin (min) (V) 7 Vin (max) (V) 18 Applications 13 to 21 inches, 21 inches and above, 7 inches or less, 7 to 13 inches Source driver voltage (min) (V) 7 Source driver voltage (max) (V) 18 Level shifter/scan driver (Ch) 0 Features Gamma buffer, I2C interface, VCOM or op amp Rating Catalog Operating temperature range (°C) -40 to 95
Display type LCD unipolar IC integration Gamma buffer, VCOM Vin (min) (V) 7 Vin (max) (V) 18 Applications 13 to 21 inches, 21 inches and above, 7 inches or less, 7 to 13 inches Source driver voltage (min) (V) 7 Source driver voltage (max) (V) 18 Level shifter/scan driver (Ch) 0 Features Gamma buffer, I2C interface, VCOM or op amp Rating Catalog Operating temperature range (°C) -40 to 95
HTSSOP (DCP) 38 62.08 mm² 9.7 x 6.4
  • 18-CHANNEL GAMMA CORRECTION
  • 2-CHANNEL PROGRAMMABLE VCOM:
    100mA IOUT
  • 10-BIT RESOLUTION
  • RAIL-TO-RAIL OUTPUT
  • LOW SUPPLY CURRENT: 900µA/ch
  • SUPPLY VOLTAGE: 7V to 18V
  • DIGITAL SUPPLY: 2.0V to 5.5V
  • INDUSTRY-STANDARD, TWO-WIRE INTERFACE:
    3.4MHz High-Speed Mode
  • HIGH ESD RATING:
    4kV HBM, 1kV CDM, 200V MM
  • DEMO BOARD AND SOFTWARE AVAILABLE
  • APPLICATIONS
    • REPLACES RESISTOR-BASED GAMMA SOLUTIONS
    • TFT-LCD REFERENCE DRIVERS
    • DYNAMIC GAMMA CONTROL

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

  • 18-CHANNEL GAMMA CORRECTION
  • 2-CHANNEL PROGRAMMABLE VCOM:
    100mA IOUT
  • 10-BIT RESOLUTION
  • RAIL-TO-RAIL OUTPUT
  • LOW SUPPLY CURRENT: 900µA/ch
  • SUPPLY VOLTAGE: 7V to 18V
  • DIGITAL SUPPLY: 2.0V to 5.5V
  • INDUSTRY-STANDARD, TWO-WIRE INTERFACE:
    3.4MHz High-Speed Mode
  • HIGH ESD RATING:
    4kV HBM, 1kV CDM, 200V MM
  • DEMO BOARD AND SOFTWARE AVAILABLE
  • APPLICATIONS
    • REPLACES RESISTOR-BASED GAMMA SOLUTIONS
    • TFT-LCD REFERENCE DRIVERS
    • DYNAMIC GAMMA CONTROL

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

The BUF20800 is a programmable voltage reference generator designed for gamma correction in TFT-LCD panels. It provides 18 programmable outputs for gamma correction and two channels for VCOM adjustment, each with 10-bit resolution.

This programmability replaces the traditional, timeconsuming process of changing resistor values to optimize the various gamma voltages and allows designers to determine the correct gamma voltages for a panel very quickly. Required changes can also be easily implemented without hardware changes.

The BUF20800 uses TI’s latest, small-geometry analog CMOS process, which makes it a very competitive choice for full production, not just evaluation.

Programming of each output occurs through an industry-standard, two-wire serial interface. Unlike existing programmable buffers, the BUF20800 offers a high-speed mode that allows clock speeds up to 3.4MHz.

For lower channel count, please contact your local sales or marketing representative.

The BUF20800 is available in an HTSSOP-38 PowerPAD™ package. It is specified from –40°C to +85°C.

The BUF20800 is a programmable voltage reference generator designed for gamma correction in TFT-LCD panels. It provides 18 programmable outputs for gamma correction and two channels for VCOM adjustment, each with 10-bit resolution.

This programmability replaces the traditional, timeconsuming process of changing resistor values to optimize the various gamma voltages and allows designers to determine the correct gamma voltages for a panel very quickly. Required changes can also be easily implemented without hardware changes.

The BUF20800 uses TI’s latest, small-geometry analog CMOS process, which makes it a very competitive choice for full production, not just evaluation.

Programming of each output occurs through an industry-standard, two-wire serial interface. Unlike existing programmable buffers, the BUF20800 offers a high-speed mode that allows clock speeds up to 3.4MHz.

For lower channel count, please contact your local sales or marketing representative.

The BUF20800 is available in an HTSSOP-38 PowerPAD™ package. It is specified from –40°C to +85°C.

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Documentación técnica

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Tipo Título Fecha
* Data sheet 18-Channel, Gamma Voltage Generator with Two Programmable Vcom Channels datasheet (Rev. E) 05 dic 2007
Application note Driving Capacitive Loads with Gamma Buffers 20 nov 2012
EVM User's guide BUF20800/BUF20820EVM User Guide 08 abr 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.

Soporte de software

SBOC395 BUF20800-20820 EVM Source Code

Productos y hardware compatibles

Productos y hardware compatibles

Productos
Controladores y alimentación para pantallas LCD y OLED
BUF20800 Generador de tensión gamma de 18 canales con dos canales VCOM programables
Soporte de software

SBOC396 BUF20800/BUF20820 EVM Software

Productos y hardware compatibles

Productos y hardware compatibles

Productos
Controladores y alimentación para pantallas LCD y OLED
BUF20800 Generador de tensión gamma de 18 canales con dos canales VCOM programables
Modelo de simulación

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SBOM409.ZIP (39 KB) - IBIS Model
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SBOC286A.ZIP (37 KB) - Spice Model
Modelo de simulación

INA271 TINA-TI Reference Design (Rev. B)

SBOC285B.TSC (176 KB) - TINA-TI Reference Design
Modelo de simulación

INA271 TINA-TI Spice Model (Rev. A)

SBOM313A.ZIP (6 KB) - TINA-TI Spice Model
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 (...)
Paquete Pasadores Descargar
HTSSOP (DCP) 38 Ver opciones

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

Los productos recomendados pueden tener parámetros, módulos de evaluación o diseños de referencia relacionados con este producto de TI.

Soporte y capacitación

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El contenido lo proporcionan “tal como está” TI y los colaboradores de la comunidad y no constituye especificaciones de TI. Consulte los términos de uso.

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