BUF20800 - TI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

BUF20800
Manufacturer

TI
ChipWorker Part#

CW435545067
RoHS

Lead free / RoHS Compliant
Description

18Channel Gamma Voltage Generator with Two Programmable VCOM Channels
Documentation

Datasheet

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BUF20800 Specifications

Attribute	Attribute Value

Part Number	BUF20800
Manufacturer	TI
ChipWorker Part#	CW435545067
Documentation	Datasheet
Case/Package	HTSSOP-38
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RoHS	RoHS Compliant
Lead-Free Status	Lead Free

Product Description

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 TIs 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.

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- Carefully tested and packaged by ChipWorker
- Vacuum packed
- Anti-static packaging
- Anti-vibration foam
- Income quality control (IQC), 800+ qualified distributors.
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- Electrical testing
- Surface testing

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