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BUF08832AIPWPR
Programmable Gamma-Voltage Generator and High Slew Rate Vcom with Integrated Two-Bank Memory
BUF08832Analog
(9V to 20V)
Digital
(2.0V to 5.5V)BKSEL
BUF08832)
www.ti.com SBOS476C –AUGUST 2009–REVISED JULY 2011
Programmable Gamma-Voltage Generator and
High Slew RateV COM with Integrated Two-Bank Memory
Checkfor Samples: BUF08832
1FEATURES DESCRIPTIONThe BUF08832 offers eight programmable gamma
23• 10-BIT RESOLUTION channels and one programmable VCOM channel.•
8-CHANNEL P-GAMMAThe final gamma and VCOM values can be storedin•
1-CHANNEL P-VCOMthe on-chip, nonvolatile memory. To allow for•
HIGH SLEW RATE VCOM: 45V/μs programming errorsor liquid crystal display (LCD)•
16x REWRITABLE NONVOLATILE MEMORY panel rework, the BUF08832 supports upto 16 write•
TWO INDEPENDENT PIN-SELECTABLE operationsto the on-chip memory.
MEMORY BANKS The BUF08832 has two separate memory banks,•
RAIL-TO-RAIL OUTPUT allowing simultaneous storageof two different gamma–
300mV Min Swing-to-Rail (10mA) curvesto facilitate switching between gamma curves.– >
300mA Max IOUT All gamma and VCOM channels offera rail-to-rail•
LOW SUPPLY CURRENT output that typically swingsto within 150mVof either•
SUPPLY VOLTAGE: 9Vto 20V supply rail witha 10mA load. All channels are
DIGITAL SUPPLY: 2Vto 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 transfersupto 3.4MHz.
3.4MHzThe 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 operationof upto 20V. The
BUF08832is offeredina HTSSOP-20 PowerPAD™
package, andis specified from –40°Cto +85°C.
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