ams AS7056 Medical and Health Sensor - Analog Frontend

描述

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.

详情

特点

  • 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

优势

  • 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

产品参数

通道
输入
3
输出
3
支持的算法
Heart rate
Heart rate variability
SpO2
封装
WLCSP
封装尺寸
l 典型值
1.68 mm
w 典型值
1.68 mm
h 典型值
0.4 mm
电源电压
最大值
1.98 V
接口
输入
I²C slave
输出
I²C slave
工作环境温度
最小值
-30 °C
最大值
85 °C
信噪比
典型值
107 dB

订单代码

产品类别 描述 单号 可行
AS7056-BWLM Q65114A1331
AS7056-BWLT Q65114A1333