DUAL EQULIAZER AMPLIFIER. WITH ALC. DESCRIPTION. The BA is a monolithic integrated circuit consisting of dual equalizer amplifier with ALC,and it . BA The BA and BAF are dual preamplifier ICs with built-in ALC circuits, and have been designed for use in stereo radio-cassette recorders and. BA IC PREAMP DUAL W/ALC 9SIP Rohm datasheet pdf data sheet FREE from Datasheet (data sheet) search for integrated circuits (ic).
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Home Questions Tags Users Unanswered. Fancy posting a link to it? The application example on page 3 gives us some idea. It won’t be super high-fidelity, but maybe good enough for a guitar stomp box.
Dual Preamplifier With Alc
I have looked for meanings of ALC online, and I have found 2 possible meanings that would fit this device: I don’t see that in the datasheet I linked to above – you must have a different one. Email Required, but never shown. That’s the one I linked to – it has no circuit in it.
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Basically, there’s an RC combination that allows you to set how fast ba308 IC will react to varying levels of the signal. Not really helpful in answering the question. That means it’s a peak detector, whose level is then used to control the amplifier’s amplification.
It’s a major feature of this chip, and I guess it’s assumed you know what it is as you chose the chip.
A variable-gain amplifier is a bit tricky to do without distortion, so having it integrated datadheet the preamplifier was a convenience for the system designer. I don’t know what you plan to do with the part, but an obvious choice would be an audio compressor. Notice how the amplifier is used for amplifying for both recording and playback.
If you look at the datasheet, there is an example application circuit: Sign up using Email and Password. I have a preamp rescued from an old stereo: The ALC signal is taken from the output, via a diode and an external capacitor.
BA Datasheet(PDF) – Unisonic Technologies
It is the ROHM datasheet form alldatasheet. So that looks very much like Automatic Level Control, though Audio Limiter Control is a close relative, if not exactly the same. It looks like the IC is intended to be used with cassette tape recorders.
I datassheet looked for meanings of ALC online, and I have found dtasheet possible meanings that would fit this device:. Post as a guest Name. How should I connect it? Instead, an circuit tries to adjust the level of the signal that is to be recorded such that it is neither too silent and vanishes in the tape noise, nor too loud so it would cause tape saturation distortion.
BA3308 Datasheet PDF
ALC automatic level control was an important function in tape recorders, as the signal had to be the right level, strong enough to overcome noise but not too high to cause saturation. The text next to Fig. There’s a block diagram dayasheet looks like the ALC picks up the output signal and uses it to adjust integrated potentiometers at the input pins of the forward path.