The EN62020 ultra-low power healthcare sensor interface ASIC, supports a variety of vital sign measurements such as: ECG, PPG (Heart rate, Oxygen Saturation SpO2), and temperature. The optical interface to LEDs and photodiodes can also be used for near infrared spectroscopy (NIRS), and the monitoring of chemical substances in the blood, such as glucose.
The size and power-optimised design of the EN62020 makes the device well-suited to compact healthcare devices, patches, and sports/fitness devices and the highly sensitive capacitive sensor interface also makes the device well suited for novel MEMS sensors.
The ASIC incorporates multiple analogue front ends (AFEs) including:
- Two differential ECG sensor channels suitable for 3-lead ECG with <2.5µVrms noise levels and CMRR of 70dB@50/100Hz
- A highly sensitive capacitive sensor channel
- A temperature sensor (35-45oC, <0.15oC resolution)
- Two photodiode drivers/photodetector readouts with SNR over 70dB and Read-out dynamic range of 105dB
- The device can also interface to other optical or current sensors, such as fluorescent glucose probes
Designed to work alongside an edge processor, or a communication device, the EN62020 uses a single 1.2 – 3.6V supply, has a flexible IO voltage and consumes as low as ~10µA per AFE.
The evaluation platform comes with a 10cm x 10cm evaluation board fitted with an EN62020, an MCU interface board for PC connection, and a graphical user interface (GUI) software for the control of EN62020.
The evaluation platform is now available from the EnSilica.
