SL486

Obsolescence Notice This product is obsolete. This information is available for your convenience only. www.DataSheet4U.com For more information on Zarlink’s obsolete products and replacement product lists, please visit http://products.zarlink.com/obsolete_products/ THIS DOCUMENT IS FOR MAINTENANCE PURPOSES ONLY AND IS NOT RECOMMENDED FOR NEW DESIGNS 3055-2.2 SL486 INFRA RED REMOTE CONTROL PREAMPLIFIER (Supersedes version in April 1994 Consumer IC Handbook, HB3120 - 2.0) The SL486 is a high gain preamplifier designed to form an interface between an infra-red receiving diode and the digital input of remote control receiving circuits. The device contains two other circuit elements, one to provide a stretched output pulse facility and a voltage regulator to allow operation from a wide range of supplies. DIODE CATHODE GYRATOR C2 GYRATOR C1 INPUT VCC (VCCI) 1 2 3 4 5 6 7 8 16 15 14 13 DIODE ANODE 1ST STAGE DECOUPLE INPUT VEE (VEEI) OUTPUT VEE (VEEO) REGULATOR INPUT (VREGIN) STRETCH OUTPUT STRETCH INPUT OUTPUT FEATURES s Fast Acting AGC Improves Operation In Noisy Environments SL486 2ND STAGE DECOUPLE 4TH STAGE DECOUPLE OUTPUT VCC (VCCO) AGC DECOUPLE 12 11 10 9 s Differential Inputs Reduce Noise Pick-up and Improve Stability s Gyrator Circuit Allows Operation in Environments with High Brightness Background Light Levels DP16 MP16 s Output Pulse Stretcher for use with Microprocessor Decoders Fig. 1 Pin connections - top view s On-chip Regulator allows Operation from...