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OP297 датащи(PDF) 6 Page - Analog Devices |
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OP297 датащи(HTML) 6 Page - Analog Devices |
6 / 12 page REV. E –6– OP297 FREQUENCY (Hz) –40 100 1k 10M 10k 100 1M VS = 15V CL = 30pF RL = 1M TA = –55 C TA = +125 C GAIN PHASE –20 0 20 40 60 100 80 TPC 19. Open Loop Gain, Phase vs. Frequency LOAD CAPACITANCE (pF) 0 0 100 –EDGE 10 20 30 40 50 60 70 1000 10000 +EDGE TA = 25 C VS = 15V AVCL = +1 VOUT = 100mV p-p TPC 20. Small-Signal Over- shoot vs. Load Capacitance FREQUENCY (Hz) 1000 0.001 10 100 1k 100 10 0.01 0.1 1 10k 100k 1M TA = 25 C VS = 15V TPC 21. Open Loop Output Impedance vs Frequency APPLICATIONS INFORMATION Extremely low bias current over a wide temperature range makes the OP297 attractive for use in sample-and-hold amplifiers, peak detectors, and log amplifiers that must operate over a wide temperature range. Balancing input resistances is unnecessary with the OP297. Offset voltage and TCVOS are degraded only minimally by high source resistance, even when unbalanced. The input pins of the OP297 are protected against large differ- ential voltage by back-to-back diodes and current-limiting resistors. Common-mode voltages at the inputs are not restricted and may vary over the full range of the supply voltages used. The OP297 requires very little operating headroom about the supply rails and is specified for operation with supplies as low as 2 V. Typically, the common-mode range extends to within 1 V of either rail. The output typically swings to within 1 V of the rails when using a 10 k Ω load. AC PERFORMANCE The OP297’s ac characteristics are highly stable over its full operating temperature range. Unity gain small-signal response is shown in Figure 4. Extremely tolerant of capacitive loading on the output, the OP297 displays excellent response with 1000 pF loads (Figure 5). 10 0% 100 90 5 s 20mV Figure 4. Small-Signal Transient Response (CLOAD = 100 pF, AVCL = 1) 10 0% 100 90 5 s 20mV Figure 5. Small-Signal Transient Response (CLOAD = 1000 pF, AVCL = 1) 10 0% 100 90 5 s 20mV Figure 6. Large-Signal Transient Response (AVCL = 1) |
Аналогичный номер детали - OP297_03 |
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Аналогичное описание - OP297_03 |
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