BUF20820 具有两个可编程 VCOM 通道的 18 通道伽马电压生成器

The BUF20820 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. It offers on-chip One-Time Programmable (OTP) memory that allows the user to store the gamma voltages on-chip. This eliminates the need for an external EEPROM.

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 voltage changes can also be easily implemented without hardware changes.

The BUF20820 uses TI’s latest, small-geometry analog CMOS process, which makes it a very competitive choice for full production, not just evaluation


BUF20820
# Gamma Buffers 18  
# Vcom Channels 2  
Vs(Min)(V) 7  
Vs(Max)(V) 18  
Iq per channel(Typ)(mA) 0.9  
Vcom-Output Current(Typ)(mA) 100  
Gamma-Output Current(Typ)(mA) 100  
Operating Temperature Range(C) -40 to 85  
Pin/Package 38HTSSOP  
Number of Channels 2,18
BUF20820 特性
BUF20820 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
BUF20820AIDCPR ACTIVE 2.95 | 1ku HTSSOP (DCP) | 38 2000 | LARGE T&R  
BUF20820AIDCPRE4 ACTIVE 2.95 | 1ku HTSSOP (DCP) | 38 2000 | LARGE T&R  
BUF20820 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
BUF20820AIDCPR Green (RoHS & no Sb/Br)  CU NIPDAU  Level-2-260C-1 YEAR BUF20820AIDCPR BUF20820AIDCPR
BUF20820AIDCPRE4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-2-260C-1 YEAR BUF20820AIDCPRE4 BUF20820AIDCPRE4
BUF20820 应用技术支持与电子电路设计开发资源下载
  1. BUF20820 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. PowerPAD™ 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)
BUF20820 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
BUF20820 评估模块 BUF20820EVM 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