AK4182 Description
The AK4182 is a 4-wire resistive touch screen controller that incorporates a 12-bit 125 kHz sampling SAR type A/D converter. The AK4182 operates down to 2.2V supply voltage and supports digital I/O interface voltage from 1.5V to VCC in order to connect low voltage uP. The AK4182 can detect the pressed screen location by performing two A/D conversions.
AK4182 Key Features
- 12 bit SAR type A/D Converter with S/H circuit
- Low Voltage Operation (VCC = 2.2V ∼ 3.6V)
- Low Voltage Digital I/F (1.5V ∼ VCC)
- 4-wire I/F
- Sampling Frequency: 125 kHz (max)
- On-Chip Voltage Reference (2.5V)
- Pen Pressure Measurement
- On-Chip Thermo Sensor
- Direct Battery Measurement
- Low Power Consumption (260µA)