BA7795FS

Video ICs VCR standard audio signal processor BA7795LS / BA7795FS The BA7795LS and BA7795FS are standard audio signal processor ICs. They contain a playback preamplifier, line amplifier, recoeding amplifier, ALC circuit, EQ switch circuit and high-voltage head switch, and provide all of the functions required for normal-audio signal processing on a single IC with a minimum number of external components required. Applications Video cassette recorders and tape decks Features 1) Available in compact SZIP and SSOP-A24-pin pack2) 3) 4) 5) ages. High-with standing-voltage head switch (AC with standing voltage: Min. 80VP-P (f = 70kHz) ). Simple, three-mode EQ switch built-in (BA7795LS). Built-in LINE / TUNER selector switch. High-performance low-noise playback amplifier. Input conversion noise figure – 122dBV (Typ. Rg = 680, DIN AUDIO). 6) ALC level can be varied. 7) ALC loop external mute eliminates audible noise at power on, and ALC attack noise. 8) Signal processing circuit can be constructed with the addition of just a few external components. Block diagram EP LP + HEAD EQ 1 REC 2 PB IN REC HSW 3 REC 4 GND RIPPLE FILTER 5 6 PB PB NFB VCC 7 8 SP EQ CTRL 9 PB EQ 10 PB / TU / EE CTRL 11 PB 12 PB OUT PB LINE IN ALC LEVEL 13 14 BIAS + 20dB LINE – 8dB LINE ALC FILTER BIAS 15 ALC 16 LINE IN MUTE CTRL 17 – 8dB TUNER 18 TUNER IN REC NFB 19 20 REC OUT 21 REC BF 22 GND LINE OUT EP REC EQ 23 – 20dB MUTE 24 REC / EE CTRL BA7795LS ∗ The BA7795FS has a di...