BUF16821,BUF16821_1,BUF16821A,BUF16821AIPWPR,BUF16821B,BUF16821BIPWPR

Part No.:
BUF16821,BUF16821_1,BUF16821A,BUF16821AIPWPR,BUF16821B,BUF16821BIPWPR
Download:
Download
Description:
Programmable Gamma-Voltage Generator and VCOM Calibrator with Integrated Two-Bank Memory
File Size:
796 K
Page:
30 Pages
Logo:
Maker:
TI [ TEXAS INSTRUMENTS ]
PCB Prototype

July 16, 2018:

BUK127-50GT

BUK581-60A

CC2400_07

CD214B-B360LF

CD54AC112_06

CDB4361

CJ70-9

CKJFAAAA

CNA1009H

CS42448_06

CS51313

CSD16407Q5C_10

PCB Datasheet:1PCB Datasheet:1
BU
F16
821
BUF16821
www.ti.com
...............................................................................................................................................................
SBOS428B – JULY 2008 – REVISED MAY 2009
Programmable Gamma-Voltage Generator and
V
COM
Calibrator with Integrated Two-Bank Memory
1
FEATURES
10-BIT RESOLUTION
16-CHANNEL P-GAMMA
2-CHANNEL P-V
COM
16x REWRITABLE NONVOLATILE MEMORY
TWO INDEPENDENT PIN-SELECTABLE
MEMORY BANKS
RAIL-TO-RAIL OUTPUT
– 300mV Min Swing-to-Rail (10mA)
– > 300mA Max I
OUT
LOW SUPPLY CURRENT
SUPPLY VOLTAGE: 9V to 20V
DIGITAL SUPPLY: 2V to 5.5V
I
2
C™ INTERFACE: Supports 400kHz and
3.4MHz
DESCRIPTION
The BUF16821 offers 16 programmable gamma
channels and two programmable V
COM
channels.
The final gamma and V
COM
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
COM
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 I
2
C interface that supports
standard operations up to 400kHz 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 PowerPAD™
package, and is specified from –40°C to +85°C.
234
APPLICATIONS
TFT-LCD REFERENCE DRIVERS
BKSEL
Digital
(2.0V to 5.5V)
Analog
(9V to 20V)
1
RELATED PRODUCTS
OUT1
FEATURES
OUT2
PRODUCT
BUF22821
BUF12800
BUF20800
BUF20820
BUF01900
BUF11704
BUF11705
22-Channel Gamma Correction Buffer
12-Channel Gamma Correction Buffer
18-/20-Channel Programmable Buffer, 10-Bit, V
COM
16x Nonvolatile Memory BANK0
16x Nonvolatile Memory BANK1
DAC Registers
DAC Registers
¼
¼
¼
¼
¼
OUT15
18-/20-Channel Programmable Buffer with Memory
Programmable V
COM
Driver
18V Supply, Traditional Gamma Buffers
22V Supply, Traditional Gamma Buffers
OUT16
V
COM
1
V
COM
2
SDA
SCL
Control IF
BUF16821
A0
1
2
3
4
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.
PowerPAD is a trademark of Texas Instruments.
I2C is a trademark of NXP Semiconductors.
All other trademarks are the property of their respective owners.
Copyright © 2008–2009, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.