BUF16821

1

FEATURES

DESCRIPTION

APPLICATIONS

Analog

(9Vto20V)

Digital

(2.0Vto5.5V)

BKSEL

A0

SCL

SDA

V

V

ControlIF

OUT15

OUT16

BUF16821

OUT1

OUT2

1

BUF16821

Programmable Gamma-Voltage Generator and

234

• 10-BIT RESOLUTION

The BUF16821 offers 16 programmable gamma

• 16-CHANNEL P-GAMMA

• 2-CHANNEL P-V

COM

the

on-chip,

nonvolatile

memory.

To

allow

for

• 16x REWRITABLE NONVOLATILE MEMORY

programming errors or liquid crystal display (LCD)

• TWO INDEPENDENT PIN-SELECTABLE

panel rework, the BUF16821 supports up to 16 write

MEMORY BANKS

operations to the on-chip memory.

• RAIL-TO-RAIL OUTPUT

The BUF16821 has two separate memory banks,

–

300mV Min Swing-to-Rail (10mA)

allowing simultaneous storage of two different gamma

–

curves to facilitate switching between gamma curves.

• LOW SUPPLY CURRENT

• SUPPLY VOLTAGE: 9V to 20V

output that typically swings to within 150mV of either

supply rail with a 10mA load. All channels are

• DIGITAL SUPPLY: 2V to 5.5V

standard operations up to 400kHz and high-speed

3.4MHz

data transfers up to 3.4MHz.

The

BUF16821

is

manufactured

using

Texas

Instruments’ proprietary, state-of-the-art, high-voltage

• TFT-LCD REFERENCE DRIVERS

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 PowerPAD™

package, and is specified from –40°C to +85°C.

RELATED PRODUCTS

FEATURES

PRODUCT

22-Channel Gamma Correction Buffer

BUF22821

12-Channel Gamma Correction Buffer

BUF12800

BUF20800

18-/20-Channel Programmable Buffer with Memory

BUF20820

BUF01900

18V Supply, Traditional Gamma Buffers

BUF11704

22V Supply, Traditional Gamma Buffers

BUF11705

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

PowerPAD is a trademark of Texas Instruments.

3

I2C is a trademark of NXP Semiconductors.

4

All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2008, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.