Datasheet AD549 (Analog Devices) - 8

AD549 Data Sheet 100 100 120 80 80 B) d 100 ( IO ) 60 60 s) B 80 d ree ( g N RAT +PSSR IN IO 40 40 (De 60 CT GA IN P JE OO 20 20 ARG RE 40 -L Y N M L P E P –PSSR 0 0 OE HAS UP 20 S P R E –20 –20 W 0 O
14 17 0
P
0 1- 1-
–40 –40
051 051 0
–20
0
10 100 1k 10k 100k 1M 10M 10 100 1k 10k 100k 1M 10M FREQUENCY (Hz) FREQUENCY (Hz)
Figure 14. Open-Loop Frequency Response Figure 17. PSRR vs. Frequency Response
40 10 35 (V) 30 (V) 10mV 5 G G IN IN 5mV 25 1mV E SW E SW G G A 20 A 0 T T L L VO 15 VO T T 10mV PU PU T 5mV 10 T U –5 U O O 1mV 5
15 18 0 0 1- 1-
0
051 051 0
–10
0
10 100 1k 10k 100k 1M 0 1 2 3 4 5 FREQUENCY (Hz) SETTLING TIME (µs)
Figure 15. Large Signal Frequency Response Figure 18. Output Voltage Swing and Error vs. Settling Time
100 B) 80 (d IO 60 N RAT IO CT JE 40 RE E D O 20 -M N O M 0 M
6
CO
-01 1 51
–20
00
10 100 1k 10k 100k 1M 10M FREQUENCY (Hz)
Figure 16. CMRR vs. Frequency Rev. K | Page 8 of 18 Document Outline FEATURES APPLICATIONS CONNECTION DIAGRAM GENERAL DESCRIPTION PRODUCT HIGHLIGHTS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION TYPICAL PERFORMANCE CHARACTERISTICS FUNCTIONAL DESCRIPTION MINIMIZING INPUT CURRENT CIRCUIT BOARD NOTES OFFSET NULLING AC RESPONSE WITH HIGH VALUE SOURCE AND FEEDBACK RESISTANCE COMMON-MODE INPUT VOLTAGE OVERLOAD DIFFERENTIAL INPUT VOLTAGE OVERLOAD INPUT PROTECTION SAMPLE-AND-DIFFERENCE CIRCUIT TO MEASURE ELECTROMETER LEAKAGE CURRENTS PHOTODIODE INTERFACE Photodiode Preamp Noise LOG RATIO AMPLIFIER TEMPERATURE COMPENSATED pH PROBE AMPLIFIER OUTLINE DIMENSIONS ORDERING GUIDE