BA3308 DATASHEET PDF

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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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. By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.

Dual Preamplifier With Alc

That’s the one I linked to – it has no circuit in it. The application ga3308 on page 3 gives us some idea. It won’t be super high-fidelity, but maybe datashdet enough for a guitar stomp box. Sign up using Facebook. That means it’s a peak detector, whose level is then used to control the amplifier’s amplification. Sign up or log in Sign up using Google.

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. It looks like the Ab3308 is intended to be used with cassette tape recorders. So that looks very much like Automatic Level Control, though Audio Limiter Control is a close relative, if not exactly the same.

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Home Questions Tags Users Unanswered. Email Required, but never shown. What is ALC ddatasheet a preamp? There’s a block diagram that looks like the ALC picks up the output signal and uses it to adjust integrated potentiometers at the input pins of the forward path.

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Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. Don’t you just hate it when they do that? It is the ROHM datasheet form alldatasheet. The text next to Fig.

Not dataxheet helpful in answering the question.

I don’t know what you plan to do with the part, but an obvious choice would be an audio compressor. 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.

BA3308 Datasheet PDF

A variable-gain amplifier is a bit tricky to do without distortion, so having it integrated into the preamplifier was datasehet convenience for the system designer. How should I connect it? Notice how the amplifier is used for amplifying for both recording and playback. Bq3308 using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

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If they talk all the time about ALC, and fail to explain what it is, all I can say then is that the datasheet stinks. Cheapo recorders often don’t have a potentiometer where one can set the recording level. I have a preamp rescued from an old stereo: Datsheet ALC signal is taken from the output, via a diode and an external capacitor. Basically, there’s an RC combination that allows you to set how fast the IC will react to varying levels of the signal.

What is ALC on a preamp? – Electrical Engineering Stack Exchange

It’s a major feature of this chip, and I guess it’s assumed you know what it is as you chose the chip. The same tape head is also used for both functions. If you look at the datasheet, there is an example application circuit: I have looked datawheet meanings of ALC online, and I have found 2 possible meanings that would fit this device: