Datasheet AD549 (Analog Devices) - 9

Data Sheet AD549 +V 10kΩ S +V 0.1µF S 0.1µF 2 7 10kΩ VIN 2 7 AD549 5 VOUT RL CL SQUARE AD549 5 VOUT V WAVE IN 3 4 10kΩ 100pF 0.1µF R INPUT L CL 3 4 10kΩ 100pF 0.1µF SQUARE
19 0
WAVE
1-
–VS
51
INPUT
00
–V
2
S
02 1- 051 0 Figure 19. Unity-Gain Follower Figure 22. Unity-Gain Inverter
5V 5V
20
5µs
23
5µs
-0 -0 11 11 05 05 0 0 Figure 20. Unity-Gain Follower Large Signal Pulse Response Figure 23. Unity-Gain Inverter Large Signal Pulse Response
10mV 10mV
21
1µs
24
1µs
-0 -0 11 11 05 0 05 0 Figure 21. Unity-Gain Follower Small Signal Pulse Response Figure 24. Unity-Gain Inverter Small Signal Pulse Response Rev. K | Page 9 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