Transcription of NE570 - onsemi.com
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NE570 - onsemi.com
Semiconductor Components Industries, LLC, 2006 May, 2006 Rev. 41 Publication Order Number: NE570 /DNE570 CompandorThe NE570 is a versatile low cost dual gain control circuit in whicheither channel may be used as a dynamic range compressor orexpandor. Each channel has a full wave rectifier to detect the averagevalue of the signal, a linerarized temperature compensated variablegain cell, and an operational NE570 is well suited for use in cellular radio and radiocommunications systems, modems, telephone, and satellitebroadcast/receive audio Complete Compressor and Expandor in One IC Temperature Compensated Greater than 110 dB Dynamic Range Operates Down to VDC System Levels Adjustable with External Components Distortion may be Trimmed Out Pb Free Packages are Available*Applications Cellular Radio Telephone Trunk Comandor High Level Limiter Low Level Expandor Noise Gate Dynamic Noise Reduction Systems Voltage Controlled Amplifier Dynamic FiltersMAXIMUM RATINGSR atingSymbolValueUnitMaximum Operating VoltageVCC24 VDCO perating Ambient Temperature RangeTA0 to +70 COperating Junction TemperatureTJ150 CPower Dissi
NE570 http://onsemi.com 3 CIRCUIT DESCRIPTION The NE570 compandor building blocks, as shown in the block diagram, are a full−wave rectifier, a variable gain cell,
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