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
- 18-CHANNEL GAMMA CORRECTION
- 2-CHANNEL PROGRAMMABLE VCOM:
100mA IOUT
- ON-CHIP OTP MEMORY
- 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
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
- BUF20820 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)
BUF20820 工具与软件