Datasheet AD8233 (Analog Devices) - 3

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Data Sheet AD8233 SPECIFICATIONS
+VS = 1.8 V to 3 V ± 5.5%, VREF = +VS/2, VCM = +VS/2, TA = 25°C, FR = low, SDN = high, AC/DC = low, RLD SDN = low, unless otherwise noted.
Table 2. Parameter Symbol Test Conditions/Comments Min Typ Max Unit
INSTRUMENTATION AMPLIFIER Common-Mode Rejection Ratio, CMRR VCM = 0.35 V to +VS − 150 mV, VDIFF = 0 V 80 86 dB DC to 60 Hz VCM = 0.35 V to +VS − 150 mV, VDIFF = ±0.3 V 80 dB Power Supply Rejection Ratio PSRR +VS = 1.8 V to 3.5 V 76 90 dB Offset Voltage (RTI) VOS Instrumentation Amplifier Inputs 1 6 mV DC Blocking Input1 25 μV Average Offset Drift Instrumentation Amplifier Inputs 2 μV/°C DC Blocking Input1 0.05 μV/°C Input Bias Current IB 50 200 pA TA = 0°C to 70°C 1 nA Input Offset Current IOS 25 100 pA TA = 0°C to 70°C 1 nA Input Impedance Differential 10||7.5 GΩ||pF Common Mode 5||15 GΩ||pF Input Voltage Noise (RTI) Spectral Noise Density f = 1 kHz 150 nV/√Hz Peak-to-Peak Voltage Noise f = 0.1 Hz to 10 Hz 10 μV p-p f = 0.5 Hz to 40 Hz 8.5 μV p-p Input Voltage Range TA = 0°C to 70°C 0.2 +VS V DC Differential Input Range VDIFF −300 +300 mV Output Output Swing RL = 50 kΩ 0.1 +VS − 0.1 V Short-Circuit Current IOUT 6.3 mA Gain AV 100 V/V Gain Error VDIFF = 0 V 0.4 % VDIFF = −300 mV to +300 mV 1 4 % Average Gain Drift TA = 0°C to 70°C 12 ppm/°C Bandwidth BW 1 kHz RFI Filter Cutoff (Each Input) 1 MHz OPERATIONAL AMPLIFIER (A1) Offset Voltage VOS 1 5 mV Average Temperature Coefficient TC TA = 0°C to 70°C 1 μV/°C Input Bias Current IB 100 pA TA = 0°C to 70°C 1 nA Input Offset Current IOS 100 pA TA = 0°C to 70°C 1 nA Input Voltage Range 0.1 +VS − 0.1 V Common-Mode Rejection Ratio CMRR VCM = 0.5 V to +VS − 0.5 V 100 dB Power Supply Rejection Ratio PSRR 100 dB Large Signal Voltage Gain AVO 110 dB Output Voltage Range RL = 50 kΩ 0.1 +VS − 0.1 V Short-Circuit Current Limit IOUT 12 mA Gain Bandwidth Product GBP 15 kHz Rev. 0 | Page 3 of 29 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS INSTRUMENTATION AMPLIFIER PERFORMANCE CHARACTERISTICS OPERATIONAL AMPLIFIER PERFORMANCE CHARACTERISTICS RIGHT LEG DRIVE (RLD) AMPLIFIER PERFORMANCE CHARACTERISTICS REFERENCE BUFFER PERFORMANCE CHARACTERISTICS SYSTEM PERFORMANCE CHARACTERISTICS THEORY OF OPERATION ARCHITECTURE OVERVIEW INSTRUMENTATION AMPLIFIER OPERATIONAL AMPLIFIER RIGHT LEG DRIVE AMPLIFIER REFERENCE BUFFER FAST RESTORE CIRCUIT LEADS ON/OFF DETECTION DC Leads On/Off Detection AC Leads On/Off Detection STANDBY OPERATION INPUT PROTECTION RADIO FREQUENCY INTERFERENCE (RFI) POWER SUPPLY REGULATION AND BYPASSING INPUT REFERRED OFFSETS LAYOUT RECOMMENDATIONS APPLICATIONS 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 APPLICATION CIRCUITS HEART RATE MEASUREMENT (HRM) NEXT TO THE HEART EXERCISE APPLICATION—HEART RATE MEASURED AT THE HANDS HOLTER MONITOR CONFIGURATION SYNCHRONIZED ECG AND PPG MEASUREMENT PACKAGING AND ORDERING INFORMATION OUTLINE DIMENSIONS ORDERING GUIDE