Datasheet AD605 (Analog Devices) - 8

AD605 2.0 60 VGN = 2.9V (FBK = OPEN) 1.5 40 VGN = 2.9V (FBK = SHORT) 1.0 VGN = 1.5V (FBK = OPEN) 20dB/V 20 R 0.5 VREF = 2.50V VGN = 1.5V (FBK = SHORT) O ) R B R d ( VGN = 0.1V (FBK = OPEN) E 0 0 IN IN GA VGN = 0.1V (FBK = SHORT) GA 30dB/V –0.5 VREF = 1.67V –20 –1.0 VGN = 0.0V –40 –1.5
9 0 3 0 01 1- 1- 54 54
–2.0
00
–60
00
0.2 0.7 1.2 1.7 2.2 2.7 100k 1M 10M 100M VGN (V) FREQUENCY (Hz)
Figure 9. Gain Error vs. VGN for Two Gain Scale Values Figure 12. AC Response for Three Values of VGN
20 2.525 N = 50 VOCM = 2.50V 18 ΔG(dB) = G(CH1) – G(CH2) 2.520 –40°C 16 2.515 14 2.510 +25°C E 12 2.505 AG ) (V NT 2.500 E 10 OSV RC +85°C E 8 2.495 P 6 2.490 4 2.485 2
0
2.480
14 0 01 1- 1- 54 54
0 2.475
00 00
–0.8 –0.6 –0.4 –0.2 0 0.2 0.4 0.6 0.8 0 0.5 1.0 1.5 2.0 2.5 3.0 DELTA GAIN (dB) VGN (V)
Figure 10. Gain Match, VGN1 = VGN2 = 1.0 V Figure 13. Output Offset vs. VGN at Three Temperatures
20 130 N = 50 18 ΔG(dB) = G(CH1) – G(CH2) +85°C 125 16 120 14 +25°C E z) 115 G 12 A / H T V EN 10 (n 110 C E R 8 –40°C PE OIS 105 N 6 100 4
1
2 95
15 01 0 1- 1- 54 54 00
0
00
90 –0.8 –0.6 –0.4 –0.2 0 0.2 0.4 0.6 0.8 0 0.5 1.0 1.5 2.0 2.5 3.0 DELTA GAIN (dB) VGN (V)
Figure 11. Gain Match, VGN1 = VGN2 = 2.50 V Figure 14. Output Referred Noise vs. VGN at Three Temperatures Rev. F | Page 8 of 24 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS (PER CHANNEL) THEORY OF OPERATION DIFFERENTIAL LADDER (ATTENUATOR) AC COUPLING GAIN CONTROL INTERFACE FIXED GAIN AMPLIFIER AND INTERPOLATOR CIRCUITS—APPLYING AN ACTIVE FEEDBACK AMPLIFIER APPLICATIONS INFORMATION CONNECTING TWO AMPLIFIERS TO DOUBLE THE GAIN RANGE EVALUATION BOARD INPUT CONNECTIONS ADJUSTING GAIN, COMMON-MODE, AND REFERENCE LEVELS OUTPUT CONNECTIONS OUTLINE DIMENSIONS ORDERING GUIDE