ADS8028

The ADS8028 from Texas Instruments is a high-performance 12-bit Analog-to-Digital Converter (ADC) capable of operating at sampling speeds up to 1 MSPS. It utilizes a successive approximation register (SAR) core and includes an inherent sample-and-hold (SH) front-end. The device offers eight analog input channels and integrates a high-resolution internal temperature sensor along with a low-drift internal voltage reference.

Key electrical specifications include a 12-bit resolution, a maximum throughput of 1 MSPS, and an SNR of 72 dB. The input voltage range is from 0 V to 5.25 V. The analog supply voltage can range from 2.7 V to 5.25 V, while the digital supply operates from 1.65 V to 5.25 V. At its full speed of 1 MSPS, the ADS8028 consumes only 17 mW, with flexible power-down modes available for reduced power consumption.

The ADS8028 features a nine-channel internal multiplexer that allows for sequential scanning of multiple input channels, including the internal temperature sensor. Communication and control are managed through a simple SPI-compatible serial interface operating up to 20 MHz. The device is specified for the extended industrial temperature range of -40°C to +125°C.

Packaged in a compact 4mm x 4mm WQFN-20 package, the ADS8028 is suitable for demanding measurement applications such as sensor output monitoring, power-supply monitoring, and PCB hot-spot analysis. Its high integration and performance make it an ideal choice for various industrial and telecommunications applications.