Datasheet AD549 (Analog Devices) - 6

AD549 Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS 20 800 A) µ ( 15 NT 700 E (V) VIN+ G CURRE A T NT L 10 600 CE S VO T E UI PU VIN– IN R Q 5 IE 500 IF L P
02
AM
05 0 0 1- 1-
0
051 051 0
400
0
0 5 10 15 20 0 5 10 15 20 SUPPLY VOLTAGE (±V) SUPPLY VOLTAGE (±V)
Figure 2. Input Voltage Range vs. Supply Voltage Figure 5. Quiescent Current vs. Supply Voltage
20 120 25°C RL = 10kΩ +VOUT B) d ( 110 IO (V) 15 G –V IN OUT N RAT IO 100 E SW G CT A 10 JE T L RE 90 VO T DE O PU M T 5 N- U O O M 80 M
03 06 0
CO
0 1- 1-
0
051 051 0
70
0
0 5 10 15 20 –20 –10 0 10 20 SUPPLY VOLTAGE (±V) INPUT COMMON-MODE VOLTAGE (V)
Figure 3. Output Voltage Swing vs. Supply Voltage Figure 6. CMRR vs. Input Common-Mode Voltage
30 3000 VS = ±15V 25 p) p- V ) V G ( 20 /m 1000 IN (V W IN S E G 15 GA LTA OOP O -L V 10 N T 300 E U P T OP OU 5
7 04 0 -00 1- 1 51
0
051 0
100
00
10 100 1k 10k 100k 0 5 10 15 20 LOAD RESISTANCE (Ω) SUPPLY VOLTAGE (±V)
Figure 4. Output Voltage Swing vs. Load Resistance Figure 7. Open-Loop Gain vs. Supply Voltage Rev. K | Page 6 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