ADS8028

ADS8028 www.ti.com SBAS549B – MAY 2011 – REVISED MARCH 2012 12-Bit, 1-MSPS, 8-Channel, SAR ADC with Internal Reference and Internal Temperature Sensor Check for Samples: ADS8028 FEATURES 1 23 Outstanding Performance: – Throughput: Up to 1 MSPS – No Missing Codes: 12 Bits – INL: ±0.5 LSB – SNR: 72 dB Highly Integrated: – Eight Analog Inputs – High-Resolution Internal Temperature Sensor – Nine-Channel Multiplexer with Channel Sequencer – Low-Drift Internal Voltage Reference Wide Supply Range: – Analog Supply (AVDD): 2.7 V to 5.25 V – Digital Supply (DVDD): 1.65 V to 5.25 V Low Power: – 17 mW at 1 MSPS – Flexible Power-Down Modes SPI™-Compatible Serial Interface: 20 MHz Small Footprint: 4-mm × 4-mm, Thin QFN-20 APPLICATIONS Programmable Logic Controls (PLCs) Industrial Process Controls (IPCs) Telecommunications Power-Supply Monitoring PCB Hot-Spot Analysis Battery-Powered Applications DESCRIPTION The ADS8028 is a 12-bit analog-to-digital converter (ADC), capable of operating at sampling speeds up to 1 MSPS. The device is based on a successive approximation register (SAR) core and provides an inherent sample-and-hold (SH) front-end. In addition to having eight analog input channels, the ADS8028 offers an internal temperature sensor with 0.25°C resolution and an internal voltage reference. A nine-channel internal multiplexer enables multiple channels to be selected (including the internal temperature sensor) that are indefinitely scanned in a sequentia...