Digital temperature sensor

Overview

STAR2020 is a silicon proven digital temperature sensor in a Silterra 1.8V/5V, 0.18um CMOS process. It uses a Delta-Sigma modulator architecture to enable a flexible resolution for the resultant digital output. The sensor achieves an error of < +/-2C. StarIC is able to customize an optional CIC with digital processing to enable the user to achieve an output digital word size between 8 and 16-bits. STAR2020 uses a two point factory calibration to achieve optimal absolute temperature accuracy. The digital temperature sensor consumes only 40uA of current (analog PTAT:10uA, ADC: 30uA).

Key Features

Silicon proven design
GDS ready design
<+/-2C temperature error between -10C and +50C
1.8V/5V 0.18um Silterra CMOS process
Delta-Sigma ADC architecture enables adjustable resolution and improved out-of-band noise rejection.
Current consumption: <50uA
Area:

5V analog core (Bandgap+PTAT generator) 300um x 300um
Portable to a 1.8V/3.3V process
1.8V 16b Delta-Sigma ADC: 580um x 450um

Optional decimation (CIC) filter
Manufacture time calibration

Block Diagram

Applications

MEMS sensor applications
Power management applications
MCU applications
Consumer applications

Deliverables

.gds layout database
.lib liberty timing models
.lef layout exchange format files
Extensive documentation
Customer support/integration package
Design usage training
Schematics available
Secured online portal

Technical Specifications

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