BUF16821 Datasheet | Texas Instruments

FEATURES - 234 10-BIT RESOLUTION - 16-CHANNEL P-GAMMA - 2-CHANNEL P-V - 16x REWRITABLE NONVOLATILE MEMORY - TWO INDEPENDENT PIN-SELECTABLE MEMORY BANKS - RAIL-TO-RAIL OUTPUT - 300m V Min Swing-to-Rail (10m A) - > 300m A Max IOUT - LOW SUPPLY CURRENT - SUPPLY VOLTAGE: 9V to 20V - DIGITAL SUPPLY: 2V to 5.5V - I2C™ INTERFACE: Supports 400k Hz and 3.4MHz APPLICATIONS - TFT-LCD REFERENCE DRIVERS BKSEL Digital Analog (2.0V to 5.5V) (9V to 20V) DESCRIPTION The BUF16821 offers 16 programmable gamma channels and two programmable V channels. The final gamma and V values can be stored in the on-chip, nonvolatile memory. To allow for programming errors or liquid crystal display (LCD) panel rework, the BUF16821 supports up to 16 write operations to the on-chip memory. The BUF16821 has two separate memory banks, allowing simultaneous storage of two different gamma curves to facilitate switching between gamma curves. All gamma and V channels offer a rail-to-rail output that typically swings to within 150m V of either supply rail with a 10m A load. All channels are programmed using an I2C interface that supports standard operations up to 400k Hz and high-speed data transfers up to 3.4MHz. The BUF16821 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 BUF16821 is offered in a HTSSOP-28 Power PAD™ package, and is specified from - 40°C to +85°C. 16x Nonvolatile Memory BANK0 16x Nonvolatile Memory BANK1 ¼ DAC Registers ¼ DAC Registers ¼ ¼ ¼ OUT1 OUT2 OUT15 OUT16 SDA SCL Control IF A0 V1 V2...