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OP90GS Datasheet(PDF) 7 Page - Analog Devices |
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OP90GS Datasheet(HTML) 7 Page - Analog Devices |
7 / 13 page –7– OP90 +18V –18V 2 3 4 6 7 OP90 Figure 2. Burn-In Circuit APPLICATION INFORMATION Battery-Powered Applications The OP90 can be operated on a minimum supply voltage of 1.6 V, or with dual supplies ± 0.8 V, and draws only 14 pA of supply current. In many battery-powered circuits, the OP90 can be continuously operated for thousands of hours before requiring battery replacement, reducing equipment down time and operating cost. High-performance portable equipment and instruments frequently use lithium cells because of their long shelf-life, light weight, and high-energy density relative to older primary cells. Most lithium cells have a nominal output voltage of 3 V and are noted for a flat discharge characteristic. The low-supply voltage requirement of the OP90, combined with the flat discharge characteristic of the lithium cell, indicates that the OP90 can be operated over the entire useful life of the cell. Figure 1 shows the typical dis- charge characteristic of a 1Ah lithium cell powering an OP90 which, in turn, is driving full output swing into a 100 k Ω load. FREQUENCY – Hz 120 100 20 11k 10 100 TA = 25 C 60 80 40 POSITIVE SUPPLY NEGATIVE SUPPLY TPC 10. Power Supply Rejection vs. Frequency FREQUENCY – Hz 100 0.1 0.1 1k 110 10 1 VS = 15V TA = 25 C 100 TPC 13. Current Noise Density vs. Frequency FREQUENCY – Hz 140 120 40 11k 10 100 VS = 15V TA = 25 C 80 100 60 TPC 11. Common-Mode Rejection vs. Frequency TA = 25 C VS = 15V AV = +1 RL = 10k CL = 500pF TPC 14. Small-Signal Transient Response FREQUENCY – Hz 1000 1 0.1 1k 110 100 10 VS = 15V TA = 25 C 100 TPC 12. Noise Voltage Density vs. Frequency TA = 25 C VS = 15V AV = +1 RL = 10k CL = 500pF TPC 15. Large-Signal Transient Response REV. C |
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