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BUF22821

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具有集成双列存储器的 22 通道伽玛电压发生器和 Vcom 校准器

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数据表

BUF22821

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数据表 立即订购

产品详情

Display type LCD unipolar IC integration Gamma buffer, VCOM Vin (min) (V) 9 Vin (max) (V) 20 Applications 13 to 21 inches, 21 inches and above, 7 inches or less, 7 to 13 inches Source driver voltage (min) (V) 9 Source driver voltage (max) (V) 20 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) 9 Vin (max) (V) 20 Applications 13 to 21 inches, 21 inches and above, 7 inches or less, 7 to 13 inches Source driver voltage (min) (V) 9 Source driver voltage (max) (V) 20 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
  • 24-CHANNEL GAMMA
    • 22-CHANNEL PROGRAMMABLE
    • 2-CHANNEL STATIC GAMMA
  • 2-CHANNEL PROGRAMMABLE VCOM
  • 10-BIT RESOLUTION
  • 16x REWRITABLE NONVOLATILE MEMORY
  • TWO INDEPENDENT MEMORY BANKS
  • RAIL-TO-RAIL OUTPUT
  • LOW SUPPLY CURRENT: 0.5mA/channel
  • SUPPLY VOLTAGE: 9V to 20V
  • DIGITAL SUPPLY: 2V to 5.5V
  • I2C™ INTERFACE
  • APPLICATIONS
    • TFT-LCD REFERENCE DRIVERS

PowerPAD is a trademark of Texas Instruments.
I2C is a trademark of NXP Semiconductors.
All other trademarks are the property of their respective owners.
  • 24-CHANNEL GAMMA
    • 22-CHANNEL PROGRAMMABLE
    • 2-CHANNEL STATIC GAMMA
  • 2-CHANNEL PROGRAMMABLE VCOM
  • 10-BIT RESOLUTION
  • 16x REWRITABLE NONVOLATILE MEMORY
  • TWO INDEPENDENT MEMORY BANKS
  • RAIL-TO-RAIL OUTPUT
  • LOW SUPPLY CURRENT: 0.5mA/channel
  • SUPPLY VOLTAGE: 9V to 20V
  • DIGITAL SUPPLY: 2V to 5.5V
  • I2C™ INTERFACE
  • APPLICATIONS
    • TFT-LCD REFERENCE DRIVERS

PowerPAD is a trademark of Texas Instruments.
I2C is a trademark of NXP Semiconductors.
All other trademarks are the property of their respective owners.

The BUF22821 offers 22 programmable gamma channels, two programmable VCOM channels, and two static gamma channels. It is ideal for the new 10-bit source drivers that require 22 gamma channels.

The final gamma and VCOM values can be stored in the on-chip, nonvolatile memory. To allow for programming errors or liquid crystal display (LCD) panel rework, the BUF22821 supports up to 16 write operations to the on-chip memory. The BUF22821 has two separate banks of memory, allowing simultaneous storage of two different gamma curves to facilitate switching between gamma curves.

All gamma and VCOM channels offer a rail-to-rail output that typically swings to within 100mV of either supply rail with a 10mA load. All channels are programmed using an I2C interface that supports standard operations up to 400kHz and high-speed data transfers up to 3.4MHz.

The BUF22821 is manufactured using Texas Instruments' proprietary, state-of-the-art, high-voltage CMOS process. This process offers very dense logic and high supply voltage operation of up to 20V. The BUF22821 is offered in a HTSSOP-38 PowerPAD™ package. It is specified from -40°C to +85°C.

The BUF22821 offers 22 programmable gamma channels, two programmable VCOM channels, and two static gamma channels. It is ideal for the new 10-bit source drivers that require 22 gamma channels.

The final gamma and VCOM values can be stored in the on-chip, nonvolatile memory. To allow for programming errors or liquid crystal display (LCD) panel rework, the BUF22821 supports up to 16 write operations to the on-chip memory. The BUF22821 has two separate banks of memory, allowing simultaneous storage of two different gamma curves to facilitate switching between gamma curves.

All gamma and VCOM channels offer a rail-to-rail output that typically swings to within 100mV of either supply rail with a 10mA load. All channels are programmed using an I2C interface that supports standard operations up to 400kHz and high-speed data transfers up to 3.4MHz.

The BUF22821 is manufactured using Texas Instruments' proprietary, state-of-the-art, high-voltage CMOS process. This process offers very dense logic and high supply voltage operation of up to 20V. The BUF22821 is offered in a HTSSOP-38 PowerPAD™ package. It is specified from -40°C to +85°C.
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技术文档

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类型 标题 下载最新的英语版本 日期
* 数据表 Programmable Gamma-Voltage Generator and Vcom Calibrator with Two-Bank Memory 数据表 (Rev. D) 2011年 7月 12日
EVM 用户指南 BUF22821EVM-USB Users Guide (Rev. A) 2016年 5月 31日
应用手册 Driving Capacitive Loads with Gamma Buffers 2012年 11月 20日
应用手册 所选封装材料的热学和电学性质 2008年 10月 16日
更多文献资料 BUF22821EVM Thank You Letter 2007年 12月 21日
EVM 用户指南 BUF22821EVM Evaluation Board User's Guide / Software Tutorial 2007年 9月 11日

设计和开发

如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。

评估板

BUF22821EVM-USB — BUF22821 评估板

BUF22821EVM-USB 是一种评估平台，用于评估在各种信号、基准和电源条件下的 BUF22821 伽马电压发生器性能。

该设备提供 22 个可编程的伽马通道，每个通道都拥有 10 位分辨率。

用户指南: PDF
TI.com 上无现货
支持软件

SBOC245 — BUF22821EVM Software

支持的产品和硬件

支持的产品和硬件

产品
LCD 和 OLED 显示电源和驱动器
BUF22821 — 具有集成双列存储器的 22 通道伽玛电压发生器和 Vcom 校准器
下载
支持软件

SBOC417 — BUF22821EVM-USB User Software

支持的产品和硬件

支持的产品和硬件

产品
LCD 和 OLED 显示电源和驱动器
BUF22821 — 具有集成双列存储器的 22 通道伽玛电压发生器和 Vcom 校准器
硬件开发
评估板
BUF22821EVM-USB — BUF22821 评估板
下载
支持软件

SBOC418 — BUF22821EVM-USB Source Code

支持的产品和硬件

支持的产品和硬件

产品
LCD 和 OLED 显示电源和驱动器
BUF22821 — 具有集成双列存储器的 22 通道伽玛电压发生器和 Vcom 校准器
硬件开发
评估板
BUF22821EVM-USB — BUF22821 评估板
下载
仿真模型

Gamma Buffer I2C IBIS Model

SBOM409.ZIP (39 KB) - IBIS Model
下载
模拟工具

PSPICE-FOR-TI — 适用于 TI 设计和模拟工具的 PSpice®

PSpice® for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence® 的模拟分析引擎。PSpice for TI 可免费使用，包括业内超大的模型库之一，涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。

借助 PSpice for TI 的设计和仿真环境及其内置的模型库，您可对复杂的混合信号设计进行仿真。创建完整的终端设备设计和原型解决方案，然后再进行布局和制造，可缩短产品上市时间并降低开发成本。

在 PSpice for TI 设计和仿真工具中，您可以搜索 TI (...)
发送申请
封装 引脚 下载
HTSSOP (DCP) 38 查看选项
应遵守 TI 评估类商品的标准条款与条件。

订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

支持和培训

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