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
- 24-CHANNEL GAMMA
- 22-CHANNEL PROGRAMMABLE
- 2-CHANNEL STATIC GAMMA
- 2-CHANNEL PROGRAMMABLE VCOM
- 10-BIT RESOLUTION
- 16x REWRITABLE NONVOLATILE MEMORY
- TWO INDEPENDENT MEMORY BANKS
- RAIL-TO-RAIL OUTPUT
- LOW SUPPLY CURRENT: 0.5mA/channel
- SUPPLY VOLTAGE: 9V to 20V
- DIGITAL SUPPLY: 2V to 5.5V
- I2CTM INTERFACE
- APPLICATIONS
- TFT-LCD REFERENCE DRIVERS
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
- BUF22821 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)
- PowerPADTM 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)
BUF22821 工具与软件