BUF20800 具有两个可编程 VCOM 通道的 18 通道伽马电压生成器

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

	BUF20800
# Gamma Buffers	18
# Vcom Channels	2
Vs(Min)(V)	7
Vs(Max)(V)	18
Iq per channel(Typ)(mA)	1
Vcom-Output Current(Typ)(mA)	100
Gamma-Output Current(Typ)(mA)	45
Pin/Package	38HTSSOP
Number of Channels	2,18

BUF20800 特性

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

BUF20800 芯片订购指南

器件	状态	价格（美元）	封装 \| 引脚	封装数量 \| 封装载体	丝印标记
BUF20800AIDCPR	ACTIVE	2.95 \| 1ku	HTSSOP (DCP) \| 38	2000 \| LARGE T&R
BUF20800AIDCPRE4	ACTIVE	2.95 \| 1ku	HTSSOP (DCP) \| 38	2000 \| LARGE T&R

BUF20800 质量与无铅数据

器件	环保计划*	铅/焊球涂层	MSL 等级/回流焊峰	环保信息与无铅 (Pb-free)	DPPM / MTBF / FIT 率
BUF20800AIDCPR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	BUF20800AIDCPR	BUF20800AIDCPR
BUF20800AIDCPRE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	BUF20800AIDCPRE4	BUF20800AIDCPRE4

BUF20800 应用技术支持与电子电路设计开发资源下载

BUF20800 数据资料 dataSheet 下载.PDF
TI 德州仪器仪运算放大器 (Op Amp)产品选型与价格 . xls
所选封装材料的热学和电学性质 (PDF 645 KB)
高速数据转换 (PDF 1967 KB)
在 PSPICE 中使用德州仪器 (TI) SPICE 模型 (zhca088.HTM, 8 KB)
PowerPAD™ Thermally Enhanced Package (slma002g.HTM, 8 KB)
运算放大器的单电源操作 (PDF 2174 KB)
Tuning in Amplifiers (PDF 44 KB)
Op Amp Performance Analysis (PDF 76 KB)
An Error Analysis of the ISO102 in a Small Signal Measuring Application (PDF 29 KB)
Level Shifting Signals with Differential Amplifiers (PDF 23 KB)
Operational Amplifier Macromodels: A Comparison (PDF 59 KB)

BUF20800 工具与软件

名称	型号	工具/软件类型
音频的快速搜索选择工具	AUDIO_SELECTION_TOOL	免费评估工具
BUF20800 评估模块	BUF20800EVM	开发电路板/EVM
用于音频转换器的软件驱动程序	CODECDRIVERS-SW	应用软件