BUF08821 Series
8-CH Gamma-Voltage Generator and Vcom Calibrator with Integrated Two-Bank Memory
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
8-CH Gamma-Voltage Generator and Vcom Calibrator with Integrated Two-Bank Memory
| Part | Voltage - Supply, Single/Dual (±) [Max] | Voltage - Supply, Single/Dual (±) [Min] | Output Type | Mounting Type | Current - Supply | Current - Output / Channel | Supplier Device Package | Number of Circuits | Package / Case [custom] | Package / Case | Package / Case [custom] | Utilized IC / Part | Primary Attributes | Function | Type | Supplied Contents | Embedded |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments BUF08821BIPWPR | 20 V | 9 V | Rail-to-Rail | Surface Mount | 4.6 mA | 30 mA | 20-HTSSOP | 8 | 0.173 in | 20-PowerTSSOP | 4.4 mm | ||||||
Texas Instruments BUF08821AIPWPR | 20 V | 9 V | Rail-to-Rail | Surface Mount | 4.6 mA | 30 mA | 20-HTSSOP | 8 | 0.173 in | 20-PowerTSSOP | 4.4 mm | ||||||
Texas Instruments BUF08821EVM-USB | BUF08821 | 8 Programmable Gamma Channels, One Programmable VCOM Channel | Amplifier, Single | Video | Board(s), Cable(s) |
Key Features
• 10-BIT RESOLUTION8-CHANNEL P-GAMMA1-CHANNEL P-VCOM16x REWRITABLE NONVOLATILE MEMORYTWO INDEPENDENT PIN-SELECTABLE MEMORY BANKSRAIL-TO-RAIL OUTPUT:300mV Minimum Swing-to-Rail (10mA)> 300mA Maximum IOUTLOW SUPPLY CURRENTSUPPLY VOLTAGE: 9V to 20VDIGITAL SUPPLY: 2V to 5.5VI2C INTERFACE: Supports 400kHz and 3.4MHz Clock FrequencyAPPLICATIONSTFT-LCD REFERENCE DRIVERS10-BIT RESOLUTION8-CHANNEL P-GAMMA1-CHANNEL P-VCOM16x REWRITABLE NONVOLATILE MEMORYTWO INDEPENDENT PIN-SELECTABLE MEMORY BANKSRAIL-TO-RAIL OUTPUT:300mV Minimum Swing-to-Rail (10mA)> 300mA Maximum IOUTLOW SUPPLY CURRENTSUPPLY VOLTAGE: 9V to 20VDIGITAL SUPPLY: 2V to 5.5VI2C INTERFACE: Supports 400kHz and 3.4MHz Clock FrequencyAPPLICATIONSTFT-LCD REFERENCE DRIVERS
Description
AI
The BUF08821 offers eight programmable gamma channels plus one programmable VCOMchannel.
The final gamma and VCOMvalues 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 VCOMchannels 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.
The BUF08821 offers eight programmable gamma channels plus one programmable VCOMchannel.
The final gamma and VCOMvalues 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 VCOMchannels 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.