Datasheet > BUF20800

BUF20800

更新时间： 2024-09-26 11:13:11

品牌	Logo	应用领域
德州仪器 - TI		电压发生器
页数	文件大小	规格书
31页	1473K
描述
具有两个可编程 VCOM 通道的 18 通道伽马电压发生器

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BUF20800 数据手册

BUF20800

SBOS329E − JUNE 2005 − REVISED DECEMBER 2007

18-Channel GAMMA VOLTAGE GENERATOR

with Two Programmable V_COMChannels

F_DEATURES

A_DPPLICATIONS

18-CHANNEL GAMMA CORRECTION

2-CHANNEL PROGRAMMABLE V

REPLACES RESISTOR-BASED GAMMA

SOLUTIONS

COM

100mA I

OUT

TFT-LCD REFERENCE DRIVERS

DYNAMIC GAMMA CONTROL

10-BIT RESOLUTION

RAIL-TO-RAIL OUTPUT

LOW SUPPLY CURRENT: 900µA/ch

SUPPLY VOLTAGE: 7V to 18V

DIGITAL SUPPLY: 2.0V to 5.5V

DESCRIPTION

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 V_COMadjustment, each

with 10-bit resolution.

INDUSTRY-STANDARD, TWO-WIRE

INTERFACE:

3.4MHz High-Speed Mode

HIGH ESD RATING:

4kV HBM, 1kV CDM, 200V MM

This programmability replaces the traditional, time-

consuming 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.

DEMO BOARD AND SOFTWARE AVAILABLE

Analog

Digital

(7V to 18V)

REFH

(2.0V to 5.5V)

BUF20800

REFH OUT

V_{COM OUT1}

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.

V_{COM OUT2}

OUT 1

OUT 2

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.

18 Output Channels plus

Two V_COMChannels

BUF20800 RELATED PRODUCTS

OUT 17

FEATURES

PRODUCT

18-Channel Programmable, Two V

+ OTP Memory

BUF20820

BUF12800

BUF01900

BUFxx704

SN10501

OUT 18

COM

12-Channel Programmable Buffer, 10-Bit

Programmable V

REFL OUT

COM

11-, 6-, 4-Channel Gamma Correction Buffer, 18V Supply

High-Speed V , 1 and 2 Channels

SDA

SCL

Control IF

COM

Complete LCD DC/DC Solution

TPS65100

REFL

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments

semiconductor products and disclaimers thereto appears at the end of this data sheet.

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

ꢀꢁ ꢂ ꢃꢄ ꢅ ꢆꢇ ꢂꢈ ꢃ ꢉꢆꢉ ꢊꢋ ꢌꢍ ꢎ ꢏꢐ ꢑꢊꢍꢋ ꢊꢒ ꢓꢔ ꢎ ꢎ ꢕꢋꢑ ꢐꢒ ꢍꢌ ꢖꢔꢗ ꢘꢊꢓ ꢐꢑꢊ ꢍꢋ ꢙꢐ ꢑꢕꢚ ꢀꢎ ꢍꢙꢔ ꢓꢑꢒ

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www.ti.com

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与BUF20800相关器件

型号	品牌	获取价格	描述	数据表
BUF20800AIDCPR	BB	获取价格	18-Channel GAMMA VOLTAGE GENERATOR with Two Programmable VCOM Channels
BUF20800AIDCPR	TI	获取价格	具有两个可编程 VCOM 通道的 18 通道伽马电压发生器 \| DCP \| 38 \| -4
BUF20800AIDCPRE4	TI	获取价格	SPECIALTY ANALOG CIRCUIT, PDSO38, GREEN, HTSSOP-38
BUF20800ATDCPRQ1	TI	获取价格	18-CHANNEL GAMMA VOLTAGE GENERATOR WITH TWO PROGRAMMABLE VCOM CHANNELS
BUF20800-Q1	TI	获取价格	18-CHANNEL GAMMA VOLTAGE GENERATOR WITH TWO PROGRAMMABLE VCOM CHANNELS
BUF20820	BB	获取价格	18-Channel GAMMA VOLTAGE GENERATOR with Two Programmable VCOM Channels
BUF20820AIDCPR	BB	获取价格	18-Channel GAMMA VOLTAGE GENERATOR with Two Programmable VCOM Channels
BUF20820AIDCPRE4	BB	获取价格	18-Channel GAMMA VOLTAGE GENERATOR with Two Programmable VCOM Channels
BUF22821	TI	获取价格	Programmable Gamma-Voltage Generator and VCOM Calibrator with Integrated Two-Bank Memory
BUF22821AIDCPR	TI	获取价格	Programmable Gamma-Voltage Generator and VCOM Calibrator with Integrated Two-Bank Memory

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