ISL24201
Programmable VCOM Calibrator with EEPROM
Key Features
- 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)
Description
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 sinks 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.
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 -40°C to +85°C.
Applications
- LCD Panel VCOM Generator
- Electrophoretic Display VCOM Generator
- Resistive Sensor Driver
- Low Power Current Loop
