NE572

Philips Semiconductors RF Communications Products Product specification Programmable analog compandor NE/SA572 DESCRIPTION The NE572 is a dual-channel, high-performance gain control circuit in which either channel may be used for dynamic range compression or expansion. Each channel has a full-wave rectifier to detect the average value of input signal, a linearized, temperature-compensated variable gain cell (∆G) and a dynamic time constant buffer. The buffer permits independent control of dynamic attack and recovery time with minimum external components and improved low frequency gain control ripple distortion over previous compandors. The NE572 is intended for noise reduction in high-performance audio systems. It can also be used in a wide range of communication systems and video recording applications. FEATURES time Independent control of attack and recovery Improved low frequency gain control ripple Complementary gain compression and expansion with external op amp PIN CONFIGURATION D1, N, F Packages TRACK TRIM A 1 RECOV. CAP A 2 RECT. IN A 3 ATTACK CAP A 4 ∆G OUT A 5 THD TRIM A 6 ∆G IN A 7 GND 8 16 VCC 15 TRACK TRIM B 14 RECOV. CAP B 13 RECT. IN B 12 ATTACK CAP B 11 ∆G OUT B 10 THD TRIM B 9 ∆G IN B Wide dynamic range—greater than 110dB Temperature-compensated gain control Low distortion gain cell Low noise—6µV typical Wide supply voltage range—6V-22V System level adjustable with external components NOTE: 1. D package released in large SO (SOL) p...