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BUF08832
Analog
(9Vto20V)
Digital
(2.0Vto5.5V)
BKSEL
A0
SCL
SDA
V
COM
DACRegisters
ControlIF
OUT7
OUT8
¼
¼
¼
BUF08832
16xNonvolatileMemoryBANK1
16xNonvolatileMemoryBANK0
OUT1
OUT2
DACRegisters
1
¼
¼
V
COM-FB
GND(V )
COM
V (V
S COM
)
BUF08832
www.ti.com
SBOS476C –AUGUST 2009– REVISED JULY 2011
Programmable Gamma-Voltage Generator and
High Slew Rate V
COM
with Integrated Two-Bank Memory
Check for Samples: BUF08832
1
FEATURES
DESCRIPTION
The BUF08832 offers eight programmable gamma
23
• 10-BIT RESOLUTION
channels and one programmable V
COM
channel.
• 8-CHANNEL P-GAMMA
The final gamma and V
COM
values can be stored in
• 1-CHANNEL P-V
COM
the on-chip, nonvolatile memory. To allow for
• HIGH SLEW RATE V
COM
: 45V/μs
programming errors or liquid crystal display (LCD)
• 16x REWRITABLE NONVOLATILE MEMORY
panel rework, the BUF08832 supports up to 16 write
• TWO INDEPENDENT PIN-SELECTABLE
operations to the on-chip memory.
MEMORY BANKS
The BUF08832 has two separate memory banks,
• RAIL-TO-RAIL OUTPUT
allowing simultaneous storage of two different gamma
– 300mV Min Swing-to-Rail (10mA)
curves to facilitate switching between gamma curves.
– > 300mA Max I
OUT
All gamma and V
COM
channels offer a rail-to-rail
• LOW SUPPLY CURRENT
output that typically swings to within 150mV of either
• SUPPLY VOLTAGE: 9V to 20V
supply rail with a 10mA load. All channels are
• DIGITAL SUPPLY: 2V to 5.5V
programmed using a Two-Wire interface that
supports standard operations up to 400kHz and
• TWO-WIRE INTERFACE: Supports 400kHz and
high-speed data transfers up to 3.4MHz.
3.4MHz
The BUF08832 is manufactured using Texas
APPLICATIONS
Instruments’ proprietary, state-of-the-art, high-voltage
CMOS process. This process offers very dense logic
• TFT-LCD REFERENCE DRIVERS
and high supply voltage operation of up to 20V. The
BUF08832 is offered in a HTSSOP-20 PowerPAD™
package, and is specified from –40°C to +85°C.
RELATED PRODUCTS
FEATURES PRODUCT
22-Channel Gamma Correction Buffer BUF22821
16-Channel Gamma Correction Buffer BUF16821
12-Channel Gamma Correction Buffer BUF12800
18-/20-Channel Programmable Buffer, 10-Bit, V
COM
BUF20800
18-/20-Channel Programmable Buffer with Memory BUF20820
Programmable V
COM
Driver 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.
2PowerPAD is a trademark of Texas Instruments Incorporated.
3All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2009–2011, 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.
