DATASHEET
ISL24211 FN7585
Rev 0.00
February 23, 2011 Programmable VCOM Calibrator with EEPROM and Output Buffer
The ISL24211 is an 8-bit programmable current sink that can
be used in conjunction with an external voltage divider to
generate a voltage source (VCOM) positioned between the
analog supply voltage and ground. The current sink’s full-scale
range is controlled by an external resistor, RSET. With the
appropriate choice of external resistors R1 and R2, the VCOM
voltage range can be controlled between any arbitrary voltage
range. The ISL24211 has an 8-bit data register and 8-bit
EEPROM for storing both a volatile and a permanent value for
its output, with an I2C interface to read and write to the
register and EEPROM. After the part is programmed, the I2C
interface is no longer needed; on power-up the EEPROM
contents are automatically transferred to the data register, and
the pre-programmed output voltage appears on the
VCOM_OUT pin. Features 8-bit, 256-Step, Adjustable Sink Current Output 60MHz VCOM Buffer/Amplifier 4.5V to 19.0V Analog Supply Range for Normal Operation
(10.8V Minimum Analog Supply Voltage for Programming) 2.25V to 3.6V Logic Supply Voltage Operating Range 400kHz, I2C Interface On-Chip 8-Bit EEPROM Guaranteed Monotonic Over-Temperature Compatible with applications using the 7-bit ISL45041 Pb-free (RoHS-compliant) Ultra-Thin 10 Ld TDFN (3 x 3 x 0.8mm max) The ISL24211 also features an integrated, wide-bandwidth,
high output drive buffer amplifier that can directly drive the
VCOM input of an LCD panel. Applications LCD Panel VCOM Generator The ISL24211 is available in an 10 Ld 3mm x 3mm TDFN
package. This package has a maximum height of 0.8mm for …