Datasheet AD8222 (Analog Devices) - 9

Data Sheet AD8222 200 160 150 150 140 130 BANDWIDTH V LIMITED 100 S = ±15V A) 120 p GAIN = 1000 ( 110 NT 50 100 B) RRE d 90 0 80 CU RR ( GAIN = 100 V S AS S = ±5V 70 P –50 + BI 60 GAIN = 10 UT 50 –100 INP 40 GAIN = 1 30 –150 20 10 –200 0
9 2
–15 –10 –5 0 5 10 15
00
0.1 1 10 100 1k 10k 100k 1M
01 7- 7-
COMMON-MODE VOLTAGE (V)
94
FREQUENCY (Hz)
94 05 05 Figure 10. IBIAS vs. Common-Mode Voltage Figure 13. Positive PSRR vs. Frequency, RTI (G = 1 to 1000)
2.0 160 ) 150 V 1.8 µ 140 ( E 1.6 130 G A GAIN = 1000 T 120 L 1.4 O 110 V GAIN = 100 T 100 1.2 E B) S d 90 F F 1.0 80 O RR ( S 70 UT 0.8 –P 60 INP 0.6 50 N I E 40 G 0.4 GAIN = 10 30 20 0.2 CHAN GAIN = 1 10 0 0
0 3
0 2 4 6 8 10
01
0.1 1 10 100 1k 10k 100k 1M
01 7- 7-
WARM-UP TIME (Minutes)
94
FREQUENCY (Hz)
94 05 05 Figure 11. Change in Input Offset Voltage vs. Warm-Up Time Figure 14. Negative PSRR vs. Frequency, RTI (G = 1 to 1000)
1000 10k 800 ) NEGATIVE V 600 (µ I A) T 1k p 400 R ( NT 5°C 200 POSITIVE GAIN = 1 RRE TO 8 0 100 CU GAIN = 10 GAIN = 100 25°C AS OFFSET CURRENT –200 T: BI IF UT R –400 INP L D 10 –600 TA GAIN = 1000 TO –800 –1000 1
1 4
–55 –35 –15 5 25 45 65 85 105 125
01
1 10 100 1k 10k 100k 1M 10M
01 7- 7-
TEMPERATURE (°C)
94
SOURCE RESISTANCE (Ω)
94 05 05 Figure 12. Input Bias Current and Offset Current vs. Temperature Figure 15. Total Drift vs. Source Resistance Rev. B | Page 9 of 24 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE Maximum Power Dissipation ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION AMPLIFIER ARCHITECTURE GAIN SELECTION REFERENCE TERMINAL PACKAGE CONSIDERATIONS Package Without Thermal Pad Package with Thermal Pad LAYOUT Common-Mode Rejection Over Frequency Reference Power Supplies INPUT BIAS CURRENT RETURN PATH INPUT PROTECTION Input Voltages Beyond the Rails Differential Input Voltages at High Gains RF INTERFERENCE COMMON-MODE INPUT VOLTAGE RANGE APPLICATIONS INFORMATION DIFFERENTIAL OUTPUT Setting the Common-Mode Voltage 2-Channel Differential Output Using a Dual Op Amp DRIVING A DIFFERENTIAL INPUT ADC RFI and Antialiasing Filter Second Antialiasing Filter Reference PRECISION STRAIN GAGE DRIVING CABLING OUTLINE DIMENSIONS ORDERING GUIDE