- 制造厂商：TI
- 产品类别：电源管理
- 技术类目：LCD 和 OLED 显示电源和驱动器
- 功能描述：具有两个可编程 VCOM 通道的 18 通道伽马电压发生器
- 点击这里打开及下载BUF20800的技术文档资料
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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. Unlike existing programmable buffers, the BUF20800 offers a high-speed mode that allows clock speeds up to 3.4MHz.
For lower channel count, please contact your local sales or marketing representative.
The BUF20800 is available in an HTSSOP-38 PowerPAD™ package. It is specified from –40°C to +85°C.
- 18-CHANNEL GAMMA CORRECTION
- 2-CHANNEL PROGRAMMABLE VCOM: 100mA IOUT
- 10-BIT RESOLUTION
- RAIL-TO-RAIL OUTPUT
- LOW SUPPLY CURRENT: 900μA/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
PowerPAD is a registered trademark of Texas Instruments. All other trademarks are the property of their respective owners.
- Display type
- LCD unipolar
- IC integration
- Gamma buffer, VCOM
- Vin (Min) (V)
- 7
- Vin (Max) (V)
- 18
- Source driver voltage (Min) (V)
- 7
- Source driver voltage (Max) (V)
- 18
- Level shifter/scan driver (ch)
- 0
- Features
- Gamma buffer, I2C interface, VCOM or op amp
- Rating
- Catalog
BUF20800的完整型号有：BUF20800AIDCPR，以下是这些产品的关键参数及官网采购报价：
BUF20800AIDCPR，工作温度：-40 to 95，封装：HTSSOP (DCP)-38，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网BUF20800AIDCPR的批量USD价格：2.596（1000+）
BUF20800-20820 EVM Source Code
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