Part Number: BMD101
Function: 3-generation bio-signal detection and processing SoC
Package: SON8
Manufacturer: NeuroSky
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Description
The BMD101 is NeuroSky’s 3-generation bio-signal detection and processing SoC device. Device is designed with an advanced analog front-end circuitry and a flexible, powerful digital signal processing structure. It targets bio-signal inputs ranging from uV to mV level and deployed passes the raw signal through with NeuroSky proprietary algorithms. The Low-Noise-Amplifier and ADC are the main components of the BMD101 analog front end.
Because of the BMD101’s extremely low system noise and programmable gain, it can detect bio -signals and convert them into digital words using a 16-bit high resolution ADC. The AFE also contains a sensor-off detection circuit.
The BMD101 CardioChip’s revolutionary capability enables wearable and mobile devices to easily capture more valuable health and fitness metrics from a user’s wrist or fingertips. These key metrics are derived from the user’s ECG data by intelligent algorithms, and are presented in an easy to understand manner that provides significant information about their health and fitness in a wearable/mobile device.
Circuit 
Advanced Analog Signal Processing :
• High Performance AFE for Bio-Signal Detection Ranging from uV Level to mV Level
• Advanced Low-Noise Amplifier (LNA) and Anti-alias Filtering
• High Resolution (16-bit) ADC
• Low Input-Referred Noise
• Automatic Sensor-Off Detection
• Fully integrated high pass filter with DC drifts removal
BMD101 Pinout
1. CS Power up or down control of LDO Input Active high
2. SEP Positive ECG analog input Input
3. SEN Negative ECG analog input Input
4. RX UART RX Input
5. TX UART TX Output
6. RESET System reset pin Input Active low
7. GND Ground Supply
8. VDD 3.3V power supply
Official Site : https://store.neurosky.com/products/ecg-bmd101
