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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I don’t see that in the datasheet I linked to above – you must have a different one.

daatasheet Notice how the amplifier is used for amplifying for both recording and playback. Sign up or log in Sign up using Google.

The ALC signal is taken from the output, via datadheet diode and an external capacitor. I have looked for meanings of ALC online, and I have found 2 possible meanings that would fit this device: I have looked for meanings of ALC online, and I have found 2 possible meanings that would fit this device:.

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

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. The application example on page 3 gives us some idea. By using our site, you acknowledge that you have read ba330 understand our Cookie PolicyPrivacy Policyand our Terms of Service.

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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. So that looks very much like Automatic Level Control, though Audio Limiter Control is a close relative, if not exactly the same. That’s the one I linked to – it has no circuit in it.

The text next to Fig. It looks like the IC is intended to be used with cassette tape recorders. Email Required, but never shown. It is the ROHM datasheet form alldatasheet. I don’t know datawheet you plan to do with the part, but an obvious choice would be an audio compressor.

What is ALC on a preamp? The same tape head is also used for both functions. Fancy posting a link to it? A variable-gain amplifier is a bit tricky to do without distortion, so having it integrated into the preamplifier was a convenience for the system designer.

Not really helpful in answering the question. If you look at the datasheet, there is an example application circuit: Post as a guest Name. It’s a major feature of this chip, and I guess it’s assumed you know what it is as you chose the chip.

BA Datasheet(PDF) – Unisonic Technologies

Sign up using Facebook. 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. Don’t you just hate it when they do that? 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. Sign up using Email and Password.

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Cheapo recorders often don’t have a potentiometer where one can set the recording level. How should I connect it? Home Questions Tags Users Unanswered. Instead, an circuit tries to adjust the level of the signal that is to be recorded such that it is neither too silent and dxtasheet in the tape noise, nor too loud so it would cause tape saturation distortion.

BA3308 Datasheet PDF

That means it’s a peak detector, whose level is then used to control the amplifier’s amplification. I have a preamp rescued from an old stereo: ALC automatic level control was an important function in tape recorders, datqsheet the signal had to be the right level, strong enough to overcome noise but not too high to cause saturation.

It won’t be super high-fidelity, but maybe good enough for a guitar stomp box. Basically, there’s an RC datasheef that allows you to set how fast the IC will react to varying levels of the signal.