Since the NE570 known to be a useful low cost dual gain control circuit, this
compressor or compandor device used to be applied in cellular and radio
communications systems, according to the datasheet.
The figure above showsthe NE570 typical test circuit. Accordingly, this NE570 device features Compressor and Expandor in One IC, Operates Down to 6V DC, Temperature Compensated, a dynamic range compressor (greater than 110 dB).
See completely aboutNE570 Compressor Typical Test Circuit and Datasheethere for full pdf archive (source: http://www.hqew.net/circuit-diagram/NE570-Compressor-Typical-Test-Circuit-and-Datasheet_5841.html).
The figure above showsthe NE570 typical test circuit. Accordingly, this NE570 device features Compressor and Expandor in One IC, Operates Down to 6V DC, Temperature Compensated, a dynamic range compressor (greater than 110 dB).
See completely aboutNE570 Compressor Typical Test Circuit and Datasheethere for full pdf archive (source: http://www.hqew.net/circuit-diagram/NE570-Compressor-Typical-Test-Circuit-and-Datasheet_5841.html).
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