Current / frequency conversion circuit composed of MAX471

Published:2011/7/5 20:12:00 Author:Lucas | Keyword: Current conversion, frequency conversion | From:SeekIC

The circuit input current range is lO0mA to lA, and the output frequency is proportional to the input current. In the circuit, MAX471 is the high-end current detection integrated circuit, and the ratio between output current and load current is 1:2000. If the load current is lA, the output current is 0.5 mA. When MAX471 output is in high level, it will charge for Cl, and charging voltage rises in slash. MAX952 is a versatile integrated circuit chip, which includes the 1.2 V reference voltage (accuracy is 2%), comparator, operational amplifier and so on.



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