AS7056 Medical and Health Sensor - Analog Frontend
Biosignal Converting Unit
Features
- 2 LED drivers + 1 VCSEL driver and 3 photodiode input pins
- Smallest wafer level chip scale package on the market
- Two synchronized PPG acquisition channels
- Two independent, programmable sequence blocks inside PPG signal acquisition
- Several power reducing functionalities
Benefits
- Flexible system design with newest emitter technology possible
- Small size application possible, eg hearables
- Enables optical blood pressure measurement
- Enables proximity detection for additional energy savings
- Prolonging the operating time
Product parameters
| Supply Voltage [V] | 1.7 - 1.98 |
|---|---|
| I²C Bus | I²C slave, fast mode plus (1 MHz), Fast mode (400 kHz) and standard mode (100 kHz) |
| Temperature Range [°C] | -30 to 85 |
| Package | WLCSP |
| LED Configuration | - |
| Supported Algorithms | HRM, HRV, SpO2 |
General description
The AS7056 Biosignal Sensor Analog Frontend (AFE) is the next generation Vital Sign Sensor. It enables the user to detect biosignals such as photoplethysmogram (PPG) and pulse transit time (PTT), as well as proximity. PPG is the most used HRM method. It measures the pulse rate - by sampling light modulated by the blood vessels, which expand and contract as blood pulses through them. Apart from HRM/HRV, optical Blood Pressure and SpO2 are also enabled by the two independent working photodiode inputs of the AS7056. The AS7056 is a size and performances optimized analog frontend to support space-limited applications such as in-ear vital sign monitoring.
The AS7056 provides two LEDs and one VCSEL driver outputs, samples up to three photodiode inputs, and supports proximity detection integrated into one of the PPG signal channels. This enables high flexibility for several LED and photodiode arrangements in different applications. Furthermore, the AS7056 Biosignal Sensor Analog Frontend provides two ADC channels for simultaneous PPG measurements and an automatic photodiode offset control.
The AS7056’s low-power design and small form factor are particularly well-suited for application in earbuds, fitness bands, smartwatches, sports watches, and smart patches. In these cases, board space is limited, and users look for extended, multi-day intervals between battery recharges. A thin package dimension makes the AS7056 suitable for height-constrained solutions like earbuds.
This product suits for the following applications:
- Earbuds
- Hearables
- Optical sensor platform
- Fitness band
- Smart watch
- Smart patches
- Heart rate monitor
- Cuff-less optical blood pressure measurements
Tools
| Title | Category | Headline | Buy |
|---|---|---|---|
| AS705x Eval Kit | Application Board | Evaluation Kit for AS705x |
Resources
| Type | Description | Language | ||
|---|---|---|---|---|
| Library | AS705x_Lib_intlib_v1-0-0.zip AS705x (AS7056 & AS7057) Schematic and Footprint | EN | ||
| Evaluation Software | AS705x_EvalSW_pWin_v2.2.1.0.zip AS705x_EvalSW_pWin_v2.2.1.0.zip Evaluation Software for Windows (AS705x -->> AS7056 & AS7057) with Firmware v1.1.1 | EN | ||
| Evaluation Software | AS705x_EvalSW_osx_v2.2.1.0.zip AS705x_EvalSW_osx_v2.2.1.0.zip Evaluation Software for macOS (AS705x -->> AS7056 & AS7057) with Firmware v1.1.1 | EN | ||
| Evaluation Software | AS705x_EvalSW_lin_v2.2.1.0.zip AS705x_EvalSW_lin_v2.2.1.0.zip Evaluation Software for Linux (AS705x -->> AS7056 & AS7057) with Firmware v1.1.1 | EN | ||
| Demo | AS7056_Demo_v1-0-0.zip AS705x (AS7056) Eval Kit Schematic | EN |
Technical documents
| Type | Description | Language | ||
|---|---|---|---|---|
| Special Datasheet | AS7056 Short Datasheet | English |
Other information
| Type | Description | Language | ||
|---|---|---|---|---|
| Block Diagram | AS7056 Block Diagram | English | ||
| Factsheet | Analog Frontend for Vital Sign Monitoring | English | ||
| Image | AS7056/57 Bottom view | English | ||
| Image | AS7056/57 Top View | English |
Related boards
Evaluation Kit for AS705x
AS705x Eval Kit
The AS705x Eval Kit is designed to evaluate all functions of the AS7056 and AS7057 biosensor and test them in various applications. For full flexibility, biosensor, temperature sensor, accelerometer and electrodes are located on the break-out board, which can be used in any application and reconnected to the main board. After dismounting the sensorboard it is also possible to connect the wristband with the PicoBlade connector. The AS705x Eval Kit works with USB connection to the PC and comes with a GUI, which enables the user to change register settings and see measurement results. The SDK contains algorithms for HRM, HRV and SpO2. Any signals important for development can be probed easily at the pin headers.
Related products
AS7050 Medical and Health Sensor - Analog Frontend
AS7050
The AS7050 Biosignal Sensor Analog Frontend is the next generation Vital Sign Sensor. It enables the user to detect biosignals such as photoplethysmogram (PPG), electrocardiogram (ECG) and galvanic skin resistance (GSR). PPG is the most used HRM method. It measures the pulse rate by sampling light modulated by the blood vessels, which expand and contract as blood pulses through them. ECG is the reference for any measurement of the biopotential generated by the heart.
Compared to the previous ams-OSRAM biosignal sensor generation, AS7050 is a biosignal converting unit. The AS7050 provides up to 8 LED driver outputs, samples up to 6 photodiode inputs and supports external electrodes. This enables the highest flexibility for several LED and photodiode arrangements in different applications. Furthermore, the AS7050 Biosignal Sensor Analog Frontend provides 2 ADC channels for simultaneous PPG and ECG measurements and an automatic photodiode offset control. The embedded ECG analog front-end satisfies IEC 60601-2-47 requirements.
The AS7050’s low-power design and small form factor are particularly well suited to application in fitness bands, smartwatches, sports watches, smart patches and earbuds. In these cases, board space is limited, and users look for extended, multi-day intervals between battery recharges. Thin package dimension makes the AS7050 suitable for height constrained solution likes earbuds.
AS7057 Medical and Health Sensor - Analog Frontend
AS7057
The AS7057 Biosignal Sensor Analog Frontend (AFE) is the next generation Vital Sign Sensor. It enables the user to detect biosignals such as photoplethysmogram (PPG) and pulse transit time (PTT), as well as proximity. PPG is the most used HRM method. It measures the pulse rate - by sampling light modulated by the blood vessels, which expand and contract as blood pulses through them. Apart from HRM/HRV, optical Blood Pressure and SpO2 are also enabled by the two independent working photodiode inputs of the AS7057. The AS7057 is a size and performance optimized analog frontend to support space-limited applications such as in-ear vital sign monitoring.
The AS7057 provides three LED driver outputs, samples up to three photodiode inputs, and supports proximity detection integrated into one of the PPG signal channels. This enables high flexibility for several LED and photodiode arrangements in different applications. Furthermore, the AS7057 Biosignal Sensor Analog Frontend provides two ADC channels for simultaneous PPG measurements and an automatic photodiode offset control.
The AS7057’s low-power design and small form factor are particularly well-suited for application in earbuds, fitness bands, smartwatches, sports watches, and smart patches. In these cases, board space is limited, and users look for extended, multi-day intervals between battery recharges. A thin package dimension makes the AS7057 suitable for height-constrained solutions like earbuds.