Datasheet AD8233 (Analog Devices) - 3

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Data Sheet AD8233 SPECIFICATIONS
+VS = 1.8 V to 3 V ± 5.5%, voltage at REFIN pin (VREF) = +VS/2, VCM = +VS/2, TA = 25°C, FR = low, SDN = high, AC/DC = low, RLD SDN = low, unless otherwise noted. The AD8233C-DF is only characterized at 25°C.
Table 2. Parameter Symbol Test Conditions/Comments Min Typ Max Unit
INSTRUMENTATION AMPLIFIER Common-Mode Rejection Ratio, DC to CMRR Input common-mode voltage (VCM) = 80 86 dB 60 Hz 0.35 V to +VS − 150 mV, dc differential input range (VDIFF) = 0 V 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 (Referred to Input (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 Output load resistor (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 Radio Frequency Interference (RFI) 1 MHz Filter Cutoff (Each Input) 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 Rev. D | Page 3 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