AS6221T

General description

Datasheet

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AS6221T Digital temperature sensor

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General description

The AS6221T IC is a high accuracy digital temperature sensor system that communicates via

a 2-wire digital bus with other devices. It consists of a Si bandgap temperature sensor, an ADC

and a digital signal processor.

This sensor is especially designed to be used in applications where a high measurement

accuracy is needed, for example measuring the skin temperature. Beside these applications, it

can also be used to replace PTC resistors.

The high temperature accuracy and an ultra-low power consumption (low operation and

quiescent current) makes the AS6221T ideally suited for mobile/battery powered applications.

The AS6221T is an easy to integrate and use solution, featuring a factory-calibrated sensor,

integrated linearization and the possibility to use 8 different I²C addresses, enabling to use

eight AS6221T devices on one bus.

Additionally, the AS6221T temperature sensor system features an alert functionality, which

triggers e.g. an interrupt to protect devices from excessive temperatures.

The AS6221T production test setup is calibrated according NIST and the verification

equipment is calibrated by an ISO/IEC-17025 accredited laboratory.

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Key benefits & features

The benefits and features of AS6221T are listed below:

Table 1: Added value of using AS6221T

Benefits

Features

High measurement accuracy

± 0.09 °C (20 °C to 42 °C)

Low power consumption

6 µA @ Operation (typical, @ 4 Hz)

0.1 µA @ Standby (typical)

Supply voltage range

1.71

– 1.98 V (0 °C to 60 °C)

Small PCB footprint

1.5 mm x 1 mm (WLCSP)