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Partno	Mfg	Dc	Qty	Available	Descript
BUF22821AIDCPR	TI	N/a	10000	avai	22-CH Gamma-Voltage Generator and Vcom Calibrator with Integrated Two-Bank Memory 38-HTSSOP -40 to 95

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BUF22821AIDCPR
22-CH Gamma-Voltage Generator and Vcom Calibrator with Integrated Two-Bank Memory 38-HTSSOP -40 to 95
BUF22821¼¼ ¼
BUF22821
www.ti.com SBOS399D –JUNE 2007–REVISED JULY 2011
Programmable Gamma-Voltage Generator and COM Calibrator with Integrated Two-Bank Memory
Checkfor Samples: BUF22821
1FEATURES DESCRIPTION
The BUF22821 offers 22 programmable
234• 24-CHANNEL GAMMA channels, two programmable VCOM channels, two– 22-CHANNEL PROGRAMMABLE static gamma channels.Itis ideal for the new 10-bit– 2-CHANNEL STATIC GAMMA source drivers that require22 gamma channels.• 2-CHANNEL PROGRAMMABLE VCOM The final gamma and VCOM values can be storedin• 10-BIT RESOLUTION the on-chip, nonvolatile memory. To allow for• 16x REWRITABLE NONVOLATILE MEMORY programming errorsor liquid crystal display (LCD) TWO INDEPENDENT MEMORY BANKS panel rework, the BUF22821 supports upto 16 write
operationsto the on-chip memory. The BUF22821• RAIL-TO-RAIL OUTPUT has two separate banks of memory, allowing• LOW SUPPLY CURRENT: 0.5mA/channel simultaneous storageof two different gamma curves• SUPPLY VOLTAGE: 9Vto 20V to facilitate switching between gamma curves.• DIGITAL SUPPLY:•I2 C™ INTERFACEAPPLICATIONS• TFT-LCD