isl24813

DATASHEET
To request the full datasheet, please visit www.intersil.com/products/isl24813
Programmable 18-Channel x 2 Bank, 10-Bit TFT-LCD
VREF Generator with Buffered VCOM Calibrator
ISL24813
Features
The ISL24813 is an I2C programmable 18-channel, 10-bit
• 18 I2C programmable 10-bit DACs
reference voltage generator with a digitally controlled VCOM
calibrator and op amp. Two selectable banks of 18 channels
allow fast hardware or software switching between two
different gamma curves. The ISL24813 is configured and
controlled via a standard I2C interface.
• Integrated programmable VCOM calibrator
ISL24813 is available in a 32 Ld TQFN package and is
specified for operation across the -40°C to +85°C
temperature range.
• One VCOM op amp
• Two banks of volatile memory for DACs
• 5V to 18V analog supply range
• 2.5V to 3.3V digital supply range
• 20mA analog supply current (unloaded)
• 700µA digital supply current
• I2C serial interface
• Pb-free (RoHS compliant)
Applications
• TFT-LCD column driver reference generator
• General-purpose reference voltage generators
GAMMA
TFT-LCD PANEL
TIMING
CONTROL
(TCON)
COLUMN DRIVERS
TFT-LCD SCREEN
ISL24813
Gamma Buffer
(Column Driver
DAC Reference
Voltages)
Vcom
Calibrator
Vcom
Driver
GATE
DRIVERS
SELECT
LINE
DATA
LINE
STORAGE
CAPACITOR
LC
PIXEL
TFT
COMMON
(Vcom)
FIGURE 1. TYPICAL APPLICATION CIRCUIT
October 30, 2014
FN6615.2
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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ISL24813
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2
FN6615.2
October 30, 2014