The UTC571N is a versatile low cost dual gain control circuit in which either channel may be used as a dynamic range compressor or expandor. Each channel has a full-wave rectifier to detect the average value of the signal, a linerarized temperature-compensated variable gain cell and an operational amplifier.
The UTC571N is well suited for use in cellular radio and radio communication systems, modems, telephone, and satellite broadcast/receive audio systems.
* Complete compressor and expandor in one Chip
* Temperature compensated
* Greater than 110dB dynamic range
* Operates down to 6VDC
* System levels adjustable with external components
* Distortion may be trimmed out
* Dynamic noise reduction systems
* Voltage-controlled amplifier