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LA1784 データシート(PDF) 4 Page - Sanyo Semicon Device |
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LA1784 データシート(HTML) 4 Page - Sanyo Semicon Device |
4 / 50 page Function List FM Front End (Equivalent to the Sanyo LA1193) • Double input type double balanced mixer • Pin diode drive AGC output • MOSFET second gate drive AGC output • Keyed AGC adjustment pin • Differential IF amplifier • Wide band AGC sensitivity setting pin, and narrow band AGC sensitivity setting pin • Local oscillator FM IF • IF limiter amplifier • S-meter output (also used for AM) 6-stage pickup • Multipath detection pin (shared FM signal meter) • Quadrature detection • AF preamplifier • AGC output • Band muting • Weak input muting • Soft muting adjustment pin • Muting attenuation adjustment pin • IF counter buffer output (also used for AM) • SD (IF counter buffer on level) adjustment pin • SD output (active high) (also used for AM) Noise Canceller • High-pass filter (first order) • Delay circuit based low-pass filter (fourth order) • Noise AGC • Pilot signal compensation circuit • Noise sensitivity setting pin • Function for disabling the noise canceller in AM mode Multiplex Functions • Adjustment-free VCO circuit • Level follower type pilot canceller circuit • HCC (high cut control) • Automatic stereo/mono switching • VCO oscillation stop function (AM mode) • Forced monaural • SNC (stereo noise controller) • Stereo display pin • Anti-birdie filter AM • Double balanced mixer (1st, 2nd) • IF amplifier • Detection • RF AGC (narrow/wide) • Pin diode drive pin • IF AGC • Signal meter output (also used for FM) • Local oscillator circuits (first and second) • Local oscillator buffer output • IF counter buffer output (also used by the FM IF) • SD (IF counter buffer on level) adjustment pin • SD output (active high) (also used for AM) • Wide AGC • Detection output frequency characteristics adjustment pin (low cut, high deemphasis) • AM stereo buffer MRC (multipath noise rejection circuit) AM/FM switching output (linked to the FM VCC) No. 6039-4/50 LA1784M |
同様の部品番号 - LA1784 |
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同様の説明 - LA1784 |
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