AD8233ACBZ-R7

The AD8233ACBZ-R7 from Analog Devices is a fully integrated, single-lead ECG front end designed for electrocardiogram and other biopotential measurement applications. It excels at extracting, amplifying, and filtering small biopotential signals in noisy environments, making it suitable for wearable products and portable health monitoring.

Key features include a low quiescent supply current of 50 µA typical, a common-mode rejection ratio of 80 dB (DC to 60 Hz), and high signal gain (G=100) with DC blocking capabilities. It incorporates a 2-pole adjustable high-pass filter and an uncommitted op-amp for a 3-pole adjustable low-pass filter, allowing for flexible signal conditioning. The device operates from a single supply of 1.7 V to 3.5 V and includes an internal RFI filter and an 8 kV HBM ESD rating.

This IC is housed in a compact 2 mm × 1.7 mm WLCSP package, ideal for space-constrained designs. Applications include fitness and activity heart rate monitors, portable ECG devices, wearable and remote health monitors, gaming peripherals, and general biopotential signal acquisition such as EMG or EEG.

The AD8233ACBZ-R7 supports 2-electrode and 3-electrode configurations and features leads on/off detection. Its design facilitates easy acquisition of the output signal by an ultralow power ADC or an embedded microcontroller.