AS6221 Temperature Sensor
High accurate digital temperature sensor
Features
- High temperature accuracy
- Ultra-low power consumption
- Small integration size (WLCSP)
- Complete sensor system with serial bus connection
- Alert functionality for exact temperature control
Benefits
- Enables high accurate skin temperature measurements
- Long battery life and low self heating
- 'Easy to Use' solution, i.e. no calibration or linearization needed
- Minimal board space and fast reaction time
Product parameters
| Interface | I²C |
|---|---|
| Supply Voltage [V] | 1.71 to 3.6 |
| Consumption [µA] | 6 @ 4 samples/s |
| Dimension [mm] | 1.5 x 1 |
| Ambient Temp. Range [°C] | -40 to 125 |
| Accuracy | ±0.09°C (20°C to 42°C) |
| Conversion Time [ms] | 36 |
General Description
The AS6221 is a high accurate digital temperature sensor with an accuracy of up to ±0.09°C, which is ideal for healthcare applications, wearables and devices requiring high-performance thermal information. The AS6221, is a complete digital sensor system, requires no calibration or linearization. It provides measurement outputs via a standard I²C interface. The sensor supports eight I²C addresses avoiding bus conflicts in multi-sensor use cases. The ultra-small size of the sensor (WLCSP 1.5 mm x 1.0 mm) enables accurate body/skin temperature measurements in very small health and lifestyle monitoring products. In addition to the high accuracy and the small form factor, the AS6221 offers a very low power consumption, for example measuring with 4 samples/s, the current consumption is only 6 µA. The sensor has 4 different automatic acquisition modes and keeps the high accuracy over the full supply range from 1.71 to 3.6 V. An integrated alert functionality triggers an interrupt to the micro controller when a temperature threshold is exceeded. The temperature threshold for the alert function can be adjusted in a device register.
This product suits for the following applications:
- Mobile Health
- Wearables
- Fitness trackers and bands
- Electronic devices
- Laptops
- Tablets
- SSDs
- PTC replacement
Tools
| Title | Category | Headline | Buy |
|---|---|---|---|
| AS6221 Eval Kit | Application Board | AS6221 Evaluation Kit | |
| AS6221 Demo Kit | Application Board | AS6221 Demo Kit |
Resources
| Type | Description | Language | ||
|---|---|---|---|---|
| Driver | AS62XX_Driver_pLinux_v2-0-0.zip Linux driver for ams AS62XX temperature sensor | EN |
Technical Documents
| Type | Description | Language | ||
|---|---|---|---|---|
| Datasheet | Datasheet for AS6221 | English | ||
| Application Note | Thermal Design Guideline for Wearables | English | ||
| Application Note | Thermal design guideline for PCB reference design | English | ||
| Product Brief | AS6221 features, benefits, applications | English |
Environmental Documents
| Type | Description | Language | ||
|---|---|---|---|---|
| RoHS Certificate | AS6221 RoHS Certificate | English |
Other Information
| Type | Description | Language | ||
|---|---|---|---|---|
| Block Diagram | AS6221 Block Diagram | English | ||
| Factsheet | High Accuracy Digital Temperature Sensor | English | ||
| Image | AS6221 WLCSP Picture | English |
Related Boards
AS6221 Evaluation Kit
AS6221 Eval Kit
The AS6221 Eval Kit is a simple PCB to enable an easy evaluation of the ams temperature sensor. The board features an AS6221 digital temperature sensor, a decoupling capacitor and pull-up resistors. The included jumpers are an easy way of setting the eight I²C addresses of the sensor. A 5x1 pin header with a 2.54mm pitch offers all necessary interfaces to connect the adapterboard to your application processor.
AS6221 Demo Kit
AS6221 Demo Kit
The AS6221 demo kit offers an easy-to-use exploration of the ams digital temperature sensor. It is Bluetooth enabled to communicate with your device. By downloading the companion app from the App Store or Google Play Store it is possible to modify all settings of the sensor and observe the impact on power consumption and conversion rate. Up to three demos could be paired at the same time to help you find the optimal settings for your needs. It even enables you to record a temperature sequence to compare it with different settings of the temperature sensor. Finally, the app does provide the key information about the product and helps to understand the principals of the alert mode. The demo kit consists of an AS6221 temperature button and a CR2023 coin cell. By pulling the flap, the demo is enabled and ready to be paired with the app.
Download the latest app here
Download the latest app here
Related Products
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from -40°C to 125°C. The integrated alarm functionality enables micro-controller wake-up calls on defined temperature thresholds. An internal voltage regulator allows stable accuracy independent of the supply voltage between 1.8V to 3.6V. For powersensitive applications, the device can enter a low-power wait mode with 0.1μA current consumption.
from -40°C to 125°C. The integrated alarm functionality enables micro-controller wake-up calls on defined temperature thresholds. An internal voltage regulator allows stable accuracy independent of the supply voltage between 1.8V to 3.6V. For powersensitive applications, the device can enter a low-power wait mode with 0.1μA current consumption.
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