BA7795LS Rohm, BA7795LS Datasheet
BA7795LS
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BA7795LS Summary of contents
Page 1
... 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. ...
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... Line input LINE IN MUTE control MUTE CTRL Tuner input (REC / EE control) TUNER IN Recording amplifier feedback REC NFB GND GND Recording amplifier output REC OUT Line amplifier output BF OUT Recording EQ switch (recording EQ switch 2) REC EQ REC / EE control (recording EQ switch 1) REC / EE CTRL BA7795LS / BA7795FS Function ...
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... VOP V — – 122.5 – 114 dBV NINP VCP-L R — — 100 — V P-P RHAC BA7795LS / BA7795FS Conditions When no signal When no signal When no signal V = – 8dBV – 8dBV – 8dBV 4. THD = 1 4. 4.7k , DIN AUDIO – 23dBV 8.2 / 39k 1 ...
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... Video ICs • Input / output circuits 10k 56k MUTE CTRL 4 EQ CTRL REC / EE CTRL REC Fig. 1 BA7795LS / BA7795FS 56k CTRL 56k PB HSW ...
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... AC BIAS CTRL CTRL MUTE CTRL 17 ON: G REC VE 19 REC OUT 21 4.7k 23 ALC + 28dB LINE REC – 20dB The BA7795FS has a different pin layout to the BA7795LS. Fig. 2 BA7795LS / BA7795FS ON: G VOPB 4.7k 4. 2.2M 14 ON: ALC OFF 16 LINE IN 4.7k 18 TUNER IN 4. LINE OUT ...
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... EQ CTRL. The recording amplifier gain and equalizer characteristics are set externally ALC LINE + 28dB REC – 20dB EP BA7795LS The BA7795FS has a different pin layout to the BA7795LS. Fig. 3 Signal flow for EE / recording BA7795LS / BA7795FS 3 330 4 6 0.01 330k 8 12k 8.2k 4 ...
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... MUTE CTRL signal. The ALC circuit and recording amplifier are stopped in playback mode ALC + 28dB 16 LINE 18 20 REC 22 – 20dB 24 BA7795LS The BA7795FS has a different pin layout to the BA7795LS. Fig. 4 Signal flow for playback BA7795LS / BA7795FS 3 330k + 0.01 330k 12k 8.2k 4.7k 4.7k 0 2.2M LINE IN 0.1 TUNER IN 0 ...
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... OFF PB OFF LINE REC ON ON inhibit — Function Mode LINE SW MUTE OPEN MUTE CLOSE Mode 2 MODE 3 MODE HEAD — BA7795LS / BA7795FS Function LINE SW REC AMP ON LINE OFF ON TUNER OFF ON PB OFF OFF LINE ON OFF TUNER ON — — — Function REC EQ SW ...
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... CTRL CTRL MUTE CTRL 17 1.5k 19 15k 21 23 BIAS OSC REC + B ALC + 28dB LINE REC – 20dB The BA7795FS has a different pin layout to the BA7795LS. Fig. 5 BA7795LS / BA7795FS 3 330 0.01 330k 8 12k 8.2k 4.7k 4. 2.2M 0.1 16 LINE IN 0.1 18 TUNER IN 20 ...
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... In particular, when there is a possibility that the line output will be connect shielded cable, or line cable, connect a resistor of about 1k capacitive load is not directly coupled to the IC output terminal. BA7795LS / BA7795FS V CC MUTE CTRL (H) 2sec or more LINE OUT Fig ...
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... ALC; OFF DIN AUDIO – 30 – 40 – 50 – 60 – LINE PB LINE – 80 MUTE – 90 – 100 – 110 10 100 1k 10k 100k FREQUENCY: f (Hz) Fig. 12 Line amplifier crosstalk BA7795LS / BA7795FS (ALC; OFF 1kHz – 10 THD = 1% (0.4 ~ 30kHz – LINE 100 200 500 ...
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... Video ICs • External dimensions (Units: mm) BA7795LS 21.8 0.2 0.889 0.5 0 SZIP24 12 BA7795FS 2.8 0.2 + 0.1 0.3 – 0.05 2.54 0.25 BA7795LS / BA7795FS 10.0 0 0.8 0.36 0.1 0.3Min. 0.15 SSOP-A24 ...