OP497 Analog Devices, OP497 Datasheet
OP497
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OP497 Summary of contents
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... Input bias current of the OP497 is under 100 pA at 25°C and is under 450 pA over the military temperature range. Combining precision, low power, and low bias current, the ...
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... OP497–SPECIFICATIONS Parameter Symbol INPUT CHARACTERISTICS Offset Voltage Vos Average Input Offset Voltage Drift TCV OS Long-Term Input Offset Voltage Stability Input Bias Current I B Average Input Bias Current Drift TC IB Input Offset Current Ios Average Input Offset Current Drift Input Voltage Range ...
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... Storage Temperature Range Y Package . . . . . . . . . . . . . . . . . . . . . . . . –65°C to +175° Package . . . . . . . . . . . . . . . . . . . . . . . –65°C to +150°C Operating Temperature Range OP497A –55°C to +125°C OP497F –40°C to +85°C OP497F –40°C to +85°C Junction Temperature Y Package . . . . . . . . . . . . . . . . . . . . . . . . –65°C to +175° Package . . . . . . . . . . . . . . . . . . . . . . . –65°C to +150°C Lead Temperature Range (Soldering 60 sec 300° ...
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... OP497–Typical Performance Characteristics 15V –100 –80 –60 –40 – 100 INPUT OFFSET VOLTAGE – 15V 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 TCV – 15V TIME AFTER POWER APPLIED – Minutes ( unless otherwise noted –100 –80 –60 –40 –20 ...
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... T = – +25C +125 C A 1000 V = 15V 10V O 100 LOAD RESISTANCE – k 160 V = 15V S 140 120 –PSR 100 +PSR 100 1k 10k 100k 1M FREQUENCY – Hz OP497 5mV 1s 100 15V TIME – Secs 15V 10V +125 + – –15 –10 – OUTPUT VOLTAGE – ...
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... OP497 + –0.5 –1.0 –1.5 1.5 1.0 0.5 – SUPPLY VOLTAGE – V 700 NO LOAD +125 C 600 +25 C 500 –55 C 400 300 200 SUPPLY VOLTAGE – 15V VCL V = 100mV p–p OUT 100 1k 10k LOAD CAPACITANCE – 15V VCL 1%THD 1kHz 100 10k 1k LOAD RESISTANCE – ...
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... Balancing input resistances is not necessary with the OP497. Offset voltage and TCV minimally by high source resistance, even when unbalanced. The input pins of the OP497 are protected against large differen- tial 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 ...
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... OP497 OPEN-LOOP GAIN LINEARITY The OP497 has both an extremely high gain of 2000 V/mv mini- mum and constant gain linearity. This enhances the precision of the OP497 and provides for very high accuracy in high closed-loop gain applications. Figure 5 illustrates the typical open-loop gain linearity of the OP 497 over the military temperature range ...
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... NONLINEAR CIRCUITS Due to its low input bias currents, the OP497 is an ideal log amplifier in nonlinear circuits such as the square and square root circuits shown in Figures 10 and 11. Using the squaring circuit of Figure example, the analysis begins by writing a voltage-loop equation across transistors Q ...
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... The model uses typical parameters for the OP497. The poles and zeros in the model were determined from the actual open and closed-loop gain and phase response of the OP497. In this way, the model presents an accurate ac representation of the actual device. The model assumes an ambient temperature of 25°C. ...
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... 1.275 COMMON-MODE GAIN NETWORK WITH ZERO AT 50 MHz RCM1 15 16 1E6 CCM 15 16 3.18E-9 RCM2 ECM 177.83E-3 Table I. OP497 SPICE Net-List NEGATIVE ZERO AT 1.8 MHz output POLE AT 6 MHz R15 POLE AT 1.8 MHz R20 20 98 C10 20 98 OUTPUT STAGE 1 R16 ...
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Ceramic DIP (Y-Suffix) 0.005 (0.13) 0.098 (2.49) MIN MAX 14 8 PIN 0.060 (1.52) 0.015 (0.38) 0.785 (19.94) MAX 0.200 (5.08) MAX 0.150 (3.81) MIN 0.200 (5.08) 0.125 (3.18) 0.023 (0.58) 0.100 0.070 (1.78) 0.014 (0.36) ...