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: 900uA/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

1. BUF20800 数据资料 dataSheet 下载.PDF
2. TI 德州仪器仪运算放大器 (Op Amp)产品选型与价格 . xls
3. 所选封装材料的热学和电学性质 (PDF 645 KB)
4. 高速数据转换 (PDF 1967 KB)
5. 在 PSPICE 中使用德州仪器 (TI) SPICE 模型 (zhca088.HTM, 8 KB)
6. PowerPADTM Thermally Enhanced Package (slma002g.HTM, 8 KB)
7. 运算放大器的单电源操作 (PDF 2174 KB)
8. Tuning in Amplifiers (PDF 44 KB)
9. Op Amp Performance Analysis (PDF 76 KB)
10. An Error Analysis of the ISO102 in a Small Signal Measuring Application (PDF 29 KB)
11. Level Shifting Signals with Differential Amplifiers (PDF 23 KB)
12. 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