Datasheet AD8225 (Analog Devices) - 7

AD8225 1000 130 120 Hz 110 100 90 100 80 CMR – dB 70 NOISE DENSITY – nV/ E G 60 LTA 50 VO 40 0 30 1 10 100 1k 10k 1 10 100 1k 10k 100k FREQUENCY – Hz FREQUENCY – Hz
TPC 7. Input Current Noise Spectral Density vs. TPC 10. CMR vs. Frequency, RTI Frequency
0.10 4 1S 0.08 3 0.06 100 2 90 C 0.04 V 1 0.02 TI – 0 0 –1 –0.02 NOISE – R –2 CMRR DRIFT – ppm/ –0.04 10 0 –0.06 –3 –0.08 –4 –0.10 0 5 10 –40 –20 0 20 40 60 80 100 TIME – sec TEMPERATURE – C
TPC 8. 0.1 Hz to 10 Hz Voltage Noise, RTI TPC 11. CMRR vs. Temperature
15 8 1S VS = 15V 6 10 100 – V 4 90 GE A 5 T 2 OL VS = 5V 0 0 –2 –5 10 –4 CURRENT NOISE – 2pA/div COMMON-MODE V 0 –10 –6 –8 –15–15 –10 –5 0 5 10 15 0 5 10 OUTPUT VOLTAGE – V TIME – sec
TPC 9. 0.1 Hz to 10 Hz Current Noise TPC 12. CMV Range vs. VOUT, Dual Supplies REV. A –7– Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS PIN FUNCTION DESCRIPTIONS ORDERING GUIDE Typical Performance Characteristics Test Circuits THEORY OF OPERATION 47pF 2 5 200mV APPLICATIONS Precision V-to-I Converter Driving a High Resolution ADC Using the Reference Input AD8225 Used as an EKG Front End Benefits of Fast Slew Rates Evaluation Board OUTLINE DIMENSIONS Revision History