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BUF22821 可编程伽马电压生成器和具有集成的 2 组存储器的 Vcom 校准器

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


BUF22821
# Gamma Buffers 24
# Vcom Channels 2
Vs(Min)(V) 9
Vs(Max)(V) 20
Iq per channel(Typ)(mA) 0.5
Vcom-Output Current(Typ)(mA) 100
Gamma-Output Current(Typ)(mA) 30
Pin/Package 38HTSSOP
Number of Channels 22
BUF22821 特性
BUF22821 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
BUF22821AIDCPR ACTIVE 3.25 | 1ku HTSSOP (DCP) | 38 2000 | LARGE T&R  
BUF22821AIDCPRE4 ACTIVE 3.25 | 1ku HTSSOP (DCP) | 38 2000 | LARGE T&R  
BUF22821 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
BUF22821AIDCPR Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR BUF22821AIDCPR BUF22821AIDCPR
BUF22821AIDCPRE4 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR BUF22821AIDCPRE4 BUF22821AIDCPRE4
BUF22821 应用技术支持与电子电路设计开发资源下载
  1. BUF22821 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)
BUF22821 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
BUF22821 评估模块 BUF22821EVM 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