DATASHEET
ISL24201 FN7586
Rev 1.00
December 9, 2010 Programmable VCOM Calibrator with EEPROM Features The ISL24201 provides an 8-bit programmable current sink
that is used in conjunction with an external voltage divider and
buffer amplifier to generate a voltage source that is positioned
between the analog supply voltage and ground. The current
sink’s resolution is controlled by an external resistor, RSET, and
the span of the VCOM voltage is controlled by the voltage
divider resistor ratio and the source impedance of R1 and R2.
This device has an 8-bit data register and 8-bit EEPROM for
storing a volatile and a permanent value for its output. The
ISL24201 has an I2C bus interface that is used to read and
write to its registers and EEPROM. At power-up the EEPROM
value is transferred to the data register and output. 8-bit, 256-Step, Adjustable Sink Current Output 4.5V to 18V Analog Supply Voltage Operating Range 2.25V to 3.6V Logic Supply Voltage Operating Range 400kHz, I2C Interface On-Chip 8-Bit EEPROM Output Guaranteed Monotonic Over-Temperature Pb-free (RoHS-compliant) Applications The ISL24201 is available in an 8 Ld 3mm x 3mm TDFN
package. This package has a maximum height of 0.8mm for
very low profile designs. The ambient operating temperature
range is
-40В°C to +85В°C. LCD Panel VCOM Generator Electrophoretic Display VCOM Generator Resistive Sensor Driver Low Power Current Loop Related Literature See AN1621 for ISL24201 Evaluation Board Application
Note “ISL24201IRTZ-EVALZ Evaluation Board User Guide” Typical Application
VDD 3.3V AVDD LCD PANEL
2 5 R1
6 …
