PDF, 686 Kb, Idioma: en, Revisión: D, Archivo subido: sept 9, 2020, Páginas: 32
Single-Lead, Heart Rate Monitor Front End
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FEATURES FUNCTIONAL BLOCK DIAGRAM 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
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 18 19 20 HPSENSE IAOUT REFIN S1 10kΩ A3 17 16 +VS GND HPDRIVE
1 FR 15 AC/DC 14 SDN 13 +IN
2 IA –IN
3 150kΩ AD8232 4 LOD+ …