50 μA, 2 mm × 1.7 mm WLCSP, Low Noise, Heart Rate Monitor for Wearable Products
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32 /9 — Data Sheet. AD8233. 100. 5µV/DIV. B) d. I (. RR RT S. 200ms/DIV. 0.1. …
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Data Sheet. AD8233. 100. 5µV/DIV. B) d. I (. RR RT S. 200ms/DIV. 0.1. 10k. 100k. FREQUENCY (Hz). 1.0. 0.9. 0.8. 0.7. √Hz). 0.6. R (. V/ (n. RRO. 0.5. ISE. N E. 0.4. 0.3
Data SheetAD82331009080705µV/DIVB) d60I (50RR RT S40P302010 012 200ms/DIV0 13737- 0.11101001k10k100k 009 FREQUENCY (Hz) 13737- Figure 9. PSRR RTI vs. Frequency Figure 12. 0.5 Hz to 40 Hz Noise (RTI) 10k1.00.90.80.71k%)√Hz)0.6R (V/ (nRRO0.5ISEN E0.4NOAI100G0.30.20.11000.11101001k10k100k 010 050100150200250300 013 FREQUENCY (Hz)DC OFFSET (mV) 13737- 13737- Figure 10. Voltage Noise Spectral Density (RTI) Figure 13. Gain Error vs. DC Offset 22pF 470pF 1nF5µV/DIV 1 1 0 400µs/DIV50mV/DIV 014 1s/DIV 13737- 13737- Figure 11. 0.1 Hz to 10 Hz Noise (RTI) Figure 14. Small Signal Pulse Response Rev. D | Page 9 of 32 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS INSTRUMENTATION AMPLIFIER PERFORMANCE CHARACTERISTICS OPERATIONAL AMPLIFIER PERFORMANCE CHARACTERISTICS RLD AMPLIFIER PERFORMANCE CHARACTERISTICS REFERENCE BUFFER PERFORMANCE CHARACTERISTICS SYSTEM PERFORMANCE CHARACTERISTICS THEORY OF OPERATION ARCHITECTURE OVERVIEW INSTRUMENTATION AMPLIFIER OPERATIONAL AMPLIFIER RLD AMPLIFIER REFERENCE BUFFER FAST RESTORE CIRCUIT LEADS ON OR OFF DETECTION DC Leads On or Off Detection AC Leads On or Off Detection STANDBY OPERATION INPUT PROTECTION RADIO FREQUENCY INTERFERENCE POWER SUPPLY REGULATION AND BYPASSING INPUT REFERRED OFFSETS LAYOUT RECOMMENDATIONS APPLICATION INFORMATION ELIMINATING ELECTRODE OFFSETS HIGH-PASS FILTERING Two-Pole High-Pass Filter Additional High-Pass Filtering Options LOW-PASS FILTERING AND GAIN Driving ADCs DRIVEN ELECTRODE MEASURING SURFACE ELECTROMYOGRAPHY (EMG) OR ELECTROENCEPHALOGRAPHY (EEG) APPLICATION CIRCUITS Heart Rate Measurement (HRM) Next to the Heart Exercise Application, HRM at the Hands Holter Monitor Configuration Portable Heart Rate and Activity Monitor System Synchronous ECG and Photoplethysmography (PPG) Measurement Using Transimpedance Amplifier (TIA) ADC Mode Using the ADPD1080 USING AD5940, AD8232, AND AD8233 FOR BIOIMPEDANCE AND ELECTROCARDIOGRAM (ECG) MEASUREMENTS DIE INFORMATION OUTLINE DIMENSIONS ORDERING GUIDE