BUF08821中文资料具有集成双列存储器的 8 通道伽玛电压发生器和 Vcom 校准器数据手册TI规格书

描述 Description

The BUF08821 offers eight programmable gamma channels plus one programmable VCOM channel. 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 BUF08821 supports up to 16 write operations to the on-chip memory. The BUF08821 has two separate memory banks, 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 150mV 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 3.4MHz. The BUF08821 is manufactured using Texas Instruments’ proprietary, state-of-the-art, high-voltage CMOS process. This process offers very dense logic and HIGH supply voltage operation of up to 20V. The BUF08821 is offered in a HTSSOP-20 PowerPAD package. It is specified from –40°C to +85°C.

特性 Features

• 10-BIT RESOLUTION
• 8-CHANNEL P-GAMMA
• 1-CHANNEL P-VCOM
• 16x REWRITABLE NONVOLATILE MEMORY
• TWO INDEPENDENT PIN-SELECTABLE MEMORY BANKS
• RAIL-TO-RAIL OUTPUT:300mV Minimum Swing-to-Rail (10mA)> 300mA Maximum IOUT
• LOW SUPPLY CURRENT
• SUPPLY VOLTAGE: 9V to 20V
• DIGITAL SUPPLY: 2V to 5.5V
• I2C INTERFACE: Supports 400kHz and 3.4MHz Clock Frequency
• APPLICATIONS
• TFT-LCD REFERENCE DRIVERS