Heart Rate Monitor ECG Module AD8232

Description

The AD8232 is an integrated signal conditioning block for ECG and other bio potential measurement applications. It is designed to extract, amplify, and filter small bio potential signals in the presence of noisy conditions, such as those created by motion or remote electrode placement. This design allows for an ultralow power analog-to-digital converter (ADC) or an embedded micro controller to acquire the output signal easily. The AD8232 can implement a two-pole high-pass filter for eliminating motion artifacts and the electrode half-cell potential. This filter is tightly coupled with the instrumentation architecture of the amplifier to allow both large gain and high-pass filtering in a single stage, thereby saving space and cost.

FEATURES

• Fully integrated single-lead ECG front end
• Low supply current: 170 µA (typical)
• Common-mode rejection ratio: 80 dB (dc to 60 Hz)
• Two or three electrode configurations
• High signal gain (G = 100) with dc blocking capabilities
• 2-pole adjustable high-pass filter
• Accepts up to ±300 mV of half cell potential
• Fast restore feature improves filter settling
• Uncommitted op amp
• 3-pole adjustable low-pass filter with adjustable gain
• Leads off detection: ac or dc options
• Integrated right leg drive (RLD) amplifier
• Single-supply operation: 2.0 V to 3.5 V
• Integrated reference buffer generates virtual ground
• Rail-to-rail output

SPECIFICATION

• Internal RFI filter
• 8 kV HBM ESD rating
• Shutdown pin
• 20-lead, 4 mm × 4 mm LFCSP and LFCSP_SS package
• Qualified for automotive applications
• Additional information
• Gross weight: 11 g
• Manufacturer part number: AD8232