BUF16821AIPWPR ,16-CH Gamma-Voltage Generator and Vcom Calibrator with Integrated Two-Bank Memory 28-HTSSOP -40 to 85ELECTRICAL CHARACTERISTICSBoldface limits apply over the specified temperature range, T =–40°C to + ..
BUF16821BIPWPR ,16-CH Gamma-Voltage Generator and Vcom Calibrator with Integrated Two-Bank Memory 28-HTSSOP -40 to 85FEATURES DESCRIPTIONThe BUF16821 offers 16 programmable gamma234• 10-BIT RESOLUTIONchannels and two ..
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BUF20800AIDCPR ,18-CH Gamma Voltage Generator with Two Programmable VCOM Channels 38-HTSSOP -40 to 95FEATURES APPLICATIONS 18-CHANNEL GAMMA CORRECTION REPLACES RESISTOR-BASED GAMMA 2-CHANNEL PROGRA ..
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BUF22821AIDCPR ,22-CH Gamma-Voltage Generator and Vcom Calibrator with Integrated Two-Bank Memory 38-HTSSOP -40 to 95FEATURES PRODUCTOUT2112-Channel Gamma Correction Buffer BUF1280020-Channel Programmable Buffer, 10- ..
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BUF16821AIPWPR-BUF16821BIPWPR
Programmable Gamma-Voltage Generator and Vcom Calibrator with Integrated Two-Bank Memory
BUF16821Analog
(9V to 20V)
Digital
(2.0V to 5.5V)BKSEL¼ ¼
BUF16821
www.ti.com SBOS428C –JULY 2008–REVISED JULY 2011
Programmable Gamma-Voltage Generator and COM Calibrator with Integrated Two-Bank Memory
Checkfor Samples: BUF16821
1FEATURES DESCRIPTIONThe BUF16821 offers 16 programmable
234• 10-BIT RESOLUTION channels and two programmable VCOM channels.•
16-CHANNEL P-GAMMAThe final gamma and VCOM values can be storedin•
2-CHANNEL P-VCOMthe on-chip, nonvolatile memory. To allow for•
16x REWRITABLE NONVOLATILE MEMORY programming errorsor liquid crystal display (LCD)•
TWO INDEPENDENT PIN-SELECTABLE panel rework, the BUF16821 supports upto 16 write
MEMORY BANKS operationsto the on-chip memory.•
RAIL-TO-RAIL OUTPUT The BUF16821 has two separate memory banks,–
300mV Min Swing-to-Rail (10mA) allowing simultaneous storageof two different gamma– >
300mA Max IOUT curvesto facilitate switching between gamma curves.•
LOW SUPPLY CURRENT All gamma and VCOM channels offera rail-to-rail•
SUPPLY VOLTAGE: 9Vto 20V output that typically swingsto within 150mVof either•
DIGITAL SUPPLY: 2Vto 5.5V supply rail witha 10mA load. All channels are
I2 C™ INTERFACE: Supports 400kHz and programmed using anI2C interface that supports
3.4MHz standard operations upto 400kHz and high-speed
data transfersupto 3.4MHz.
APPLICATIONS The BUF16821 is manufactured
TFT-LCD REFERENCE DRIVERS Instruments’ proprietary, state-of-the-art,
CMOS process. This process offers very logic
and high supply voltage operationof upto 20V. The
BUF16821is offeredina HTSSOP-28 PowerPAD™
package, andis specified from –40°Cto +85°C.
