Analog To Digital Converter (Adc); Overview; Features - Nuvoton NUC970 series Technical Reference Manual

5.32

Analog to Digital Converter (ADC)

5.32.1 Overview

The NuMicro™ NUC970 series contains one 12-bit Successive Approximation Register analog-to-
digital converter (SAR A/D converter) with eight input channels. The A/D converter supports two
operation modes: 4-wire or 5-wire mode. The ADC is especially suitable to act as touch screen
controller. Battery voltage detection could be easily accomplished by the SAR ADC. It has keypad
interrupt signal generator.

5.32.2 Features


Resolution: 12-bit resolution.

DNL: +/-1.5 LSB, INL: +/-3 LSB.

Dual Data Rates: 1MSPS/200KSPS.

Analog Input Range: VREF to AGND, could be rail-to-rail.

Analog Supply: 2.7-3.6V.

Digital Supply: 1.2V.

8 Single-Ended Analog inputs.

Compatible with 4-wire or 5-wire Touch Screen Interface.

Touch Pressure Measurement for 4-wire touch screen application.

Direct Battery Measurement.

Keypad Interrupt Generator.

Auto Power Down.

Low Power Consumption: 4850uW(@1MSPS) / 2170uW(@200KSPS), < 1uA
NUC970 Technical Reference Manual
Publication Release Date: Dec. 15, 2015
- 1198 - Revision V1.30