FEATURES

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

sequential manner. A simple SPI-compatible serial

interface provides easy communication and control

between the device and host controller. The digital

supply can operate from 1.65 V to 5.25 V, enabling

direct interface with a wide range of processors and

controllers.

At full speed of 1 MSPS, the ADS8028 dissipates

only 17 mW. The device offers flexible power-down

modes to save power when conversions are not

being performed. The ADS8028 performance is

specified over the extended industrial temperature

range of –40°C to +125°C.

The ADS8028 is ideal for demanding measurement

applications, such as sensor output monitoring,

power-supply monitoring, and printed circuit board

(PCB) hot-spot analysis, and is available in a small

form-factor QFN-20 package.