Datasheet OP490 (Analog Devices) - 14

OP490 VDD 1 +5V C1 0.1µF 3 R 4 FBA VINA VREFA 2 R1 2 I 10MΩ OUT1A 4 – DAC A 1/4 1/4 1 V DAC8408 OUTA OP490 3 + A 11 IOUT2A/2B 5 C2 0.1µF 7 RFBB VINB VREFB 8 R2 DAC B 10MΩ 1/4 DAC8408 IOUT1B 6 6 – 1/4 7 VOUTB OP490 5 + B C3 0.1µF 25 RFBC VINC VREFC 27 R3 I 10MΩ OUT1C 25 9 – DAC C 1/4 1/4 8 V DAC8408 OUTC OP490 10 + C IOUT2C/2D 24 C4 0.1µF 22 RFBD VIND VREFD 21 DAC D R4 10MΩ 1/4 IOUT1D 23 13 – DAC8408 1/4 14 VOUTD OP490 12 + D DAC DATA BUS PIN 9 (LSB) TO PIN 16 (MSB) OP490 17 A/B +2.5V 18 DIGITAL R/W DAC8408 REFERENCE CONTROL VOLTAGE 19 SIGNALS DS1 20 DS2 DGND
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02 8- 30 00 Figure 25. Single-Supply Micropower Quad Programmable Gain Amplifier Rev. E | Page 13 of 16 Document Outline FEATURES GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAMS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ELECTRICAL CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION TYPICAL PERFORMANCE CHARACTERISTICS APPLICATIONS INFORMATION BATTERY-POWERED APPLICATIONS SINGLE-SUPPLY OUTPUT VOLTAGE RANGE INPUT VOLTAGE PROTECTION MICROPOWER VOLTAGE-CONTROLLED OSCILLATOR MICROPOWER SINGLE-SUPPLY QUAD VOLTAGE-OUTPUT 8-BIT DAC HIGH OUTPUT AMPLIFIER SINGLE-SUPPLY MICROPOWER QUAD PROGRAMMABLE GAIN AMPLIFIER OUTLINE DIMENSIONS ORDERING GUIDE