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AS6221

General Description

Datasheet

• PUBLIC

DS000751

• v3-00 • 2022-Feb-28

│ 3

General Description

The AS6221 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 AS6221 ideally suited for mobile/battery powered applications.

The AS6221 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 AS6221 devices

on one bus.

Additionally the AS6221 temperature sensor system features an alert functionality, which triggers e.g.

an interrupt to protect devices from excessive temperatures.

The AS6221 production test setup is calibrated according NIST and the verification equipment is

calibrated by an ISO/IEC-17025 accredited laboratory

1.1

Key Benefits & Features

The benefits and features of AS6221 are listed below:

Figure 1:

Added Value of Using AS6221

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

– 3.6 V (0 °C to 125 °C)

Small PCB Footprint

1.5 mm x 1 mm (WLCSP)

AS6221 Scheda tecnica(PDF) 4 Page - OSRAM GmbH