1FEATURES
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.