HA1137W-the FM-IF integrated circuit

Published:2011/5/12 21:38:00 Author:Borg | Keyword: FM-IF, integrated circuit | From:SeekIC

HA1137W is an FM-IF amplifier integrated circuit produced by Hitachi, Japan, which is used in HI-FI stereo tuner as FM INTREQ. 1. The internal circuit and pin functions of HA1137WHA1137W consists of sub-circuits of INTREQ, orthogonal detection, low noise preamplifier, delay high AGC, step indicator and central indicator. Its features are: high sensitivity of input amplitude, good AM impedence, low harmonic distortion, large working range and without noise in ±50KHz. HA1137 is in 16-lead dual in-line package.



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