Philips NE571
The SA571 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.DESCRIPTION
The SA571 is well suited for use in cellular radio and radio communications systems, modems, telephone, and satellite broadcast/receive audio systems. PIN CONFIGURATION D, and N Packages1 RECT CAP 1 RECT IN 1 AG CELL IN 1 GND INV. IN 1 RES. R3 1 OUTPUT 1 THD TRIM 1 1 2 3 4 5 6 7 8 16 RECT CAP 2 15 RECT IN 2 14 AG CELL IN 2 13 VCC 12 INV. IN 2 11 RES. R3 2FEATURES
● Complete compressor and expandor in one IChip● 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 10 OUTPUT 2 9 THD TRIM 2 TOP VIEW NOTE: 1. SOL - Released in Large SO Package Only. SR00675 Figure 1. Pin Configuration
APPLICATIONS
● Cellular radio● High level limiter
● Low level expandor—noise gate
● Dynamic filters
● CD Player TEMPERATURE RANGE -40 to +85°C -40 to +85°C ORDER CODE SA571D SA571N DWG # SOT162-1 SOT38-4 ORDERING INFOR...