The ECG Sensor AD8232 is a low-power, highly accurate sensor designed for capturing electrocardiogram (ECG) signals. It is ideal for wearable health devices, medical applications, and fitness monitoring systems, providing real-time heart rate data with excellent signal clarity.
ECG SENSOR AD8232
The AD8232 is a single-lead heart rate monitor analog front-end designed for ECG (Electrocardiogram) signal acquisition. It is widely used for heart rate monitoring applications, particularly in wearable health devices, fitness trackers, and medical devices.
Key Features of AD8232:
Low Power Consumption:
The AD8232 is designed for low-power operation, which makes it ideal for battery-operated devices and wearable health monitors.
Supply Current: Typically 170 µA in normal operation.
ECG Signal Acquisition:
The AD8232 is specifically optimized for extracting, amplifying, and filtering weak ECG signals, making it easier to process the heart’s electrical activity in real-time.
It amplifies the small voltage changes across the skin generated by heartbeats to a readable level.
Filtering:
The chip includes high-pass and low-pass filters to eliminate noise (like motion artifacts or electrode noise) from the signal.
High-pass filter helps remove baseline drift.
Low-pass filter helps eliminate high-frequency noise and power line interference.
Instrumentation Amplifier:
The AD8232 features an instrumentation amplifier with high gain and precision, essential for amplifying small ECG signals without distortion.
Lead-Off Detection:
It has lead-off detection functionality, meaning it can detect if an electrode becomes disconnected from the skin.
Single-Lead ECG:
The AD8232 is typically used in single-lead ECG applications, which means it measures the potential difference between two electrodes to monitor heart activity.
Pin
Configuration:
LO+ and LO-:
Lead-off detection pins (indicate if electrodes are properly connected).
OUTPUT:
This pin provides the amplified and filtered analog ECG signal.
SDN:
Shutdown pin (used to enable/disable the chip).
3.3V:
Power input (3.3V DC).
GND:
Ground connection.
Operating
Parameters:
Operating Voltage:
Typically powered by 3.3V.
Output Type:
Provides analog ECG signal output.
Supply Current:
170 µA
in normal operation, with very low power consumption in shutdown mode
(less than 1 µA).
