AD537SD/883B Analog Devices Inc, AD537SD/883B Datasheet
AD537SD/883B
Specifications of AD537SD/883B
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AD537SD/883B Summary of contents
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AD537–SPECIFICATIONS Model CURRENT-TO-FREQUENCY CONVERTER Frequency Range 1 Nonlinearity kHz MAX f = 100 kHz MAX Full-Scale Calibration Error C = 0.01 µ 1.000 mA IN vs. Supply (f < 100 kHz) MAX vs. Temp (T ...
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CIRCUIT OPERATION Block diagrams of the AD537 are shown above. A versatile operational amplifier (BUF) serves as the input stage; its pur- pose is to convert and scale the input voltage signal to a drive current in the NPN follower. ...
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AD537 In some cases the signal may be in the form of a negative cur- rent source. This can be handled in a similar way to a negative input voltage. However, the scaling resistor is no longer re- quired, eliminating ...
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NONLINEARITY SPECIFICATION The preferred method for specifying linearity error is in terms of the maximum deviation from the ideal relationship after cali- brating the converter at full scale and “zero”. This error will vary with the full-scale frequency and the ...
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AD537 F-V CONVERTERS The AD537 can be used as a high linearity VCO in a phase- locked loop to accomplish frequency-to-voltage conversion. By operating the loop without a low-pass filter in the feedback path (first-order system), it can lock to ...
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SYNCHRONOUS OPERATION The SYNC terminal at pin 2 of the DIP package can be used to synchronize a free running AD537 to a master oscillator, either at a multiple or a sub-multiple of the primary frequency. The preferred connection is ...
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AD537 THERMOCOUPLE INPUT The output of a Chromel-Constantan (Type E) thermocouple, using a reference junction at 0°C, varies from 53.14 mV over the temperature range 0°C to +700°C with a slope of 80.678 µV/degree over most of ...