HFT012

The HFT012 integrates a 12-bit SAR type Analog-to-Digital converter, a synchronous serial interface and low on-resistance switches on a chip. The X/Y driver is automatically configured for X/Y position, X-plate resistance and touch pressure measurements for a 4-wire resistive type touch screen. With the built-in X/Y drivers and the low power design techniques the chip is suitable for battery-operated system and other portable equipment application. The HFT012 features direct battery measurement, temperature measurement and touch-pressure measurement. When not in use, the internal reference can be shut down to conserve power. An external reference can also be applied and can be varied from 1 V to VDD, while the analog input range is from 0 V to VREF. The HFT012 includes a shutdown mode that reduces the current consumption to less than 1A.