Datasheet AD8233 (Analog Devices) - 8

AD8233 Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS
+VS = 3 V, VREF = 1.5 V, VCM = 1.5 V, TA = 25°C, unless otherwise noted.
INSTRUMENTATION AMPLIFIER PERFORMANCE CHARACTERISTICS 2100 100 80 1750 60 A) p 40 1400 ( NT E 20 S T 1050 0 CURR UNI S A –20 BI 700 UT P –40 IN –60 350 –80 0 –100 –120 –90 –60 –30 0 30 60 90 120
03 06 0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
0 37- 37-
CMRR (µV/V) INPUT COMMON-MODE VOLTAGE (V)
137 137 Figure 3. CMRR Distribution Figure 6. Input Bias Current vs. Input Common-Mode Voltage
3500 50 NO DC OFFSET 300mV OFFSET 3000 40 2500 30 ) S B T 1500 (d 20 IN UNI GA 1000 10 500 0 0 –10 –2.0 –1.5 –1.0 –0.5 0 0.5 1.0 1.5 2.0
04 07 0
1 10 100 1k 10k 100k
0 37- 37-
GAIN ERROR (%) FREQUENCY (Hz)
137 137 Figure 4. Gain Error Distribution Figure 7. Gain vs. Frequency
3.5 120 3.0 E (V) 100 G 2.5 A T L 2.0 E VO 80 B) D d O 1.5 -M RR ( N O 1.0 CM 60 MM O C 0.5 T PU 40 IN 0 NO DC OFFSET +300mV OFFSET –300mV OFFSET –0.5 20 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
05 0
10 100 1k 10k 100k
08 0 37- 37-
OUTPUT VOLTAGE (V) FREQUENCY (Hz)
137 137 Figure 5. Input Common-Mode Voltage vs. Output Voltage Figure 8. CMRR vs. Frequency (RTI) Rev. 0 | Page 8 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