May 1, 2021 By admin 0

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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BA 데이터시트(PDF) – Rohm

Notice how the amplifier is used for amplifying for both recording and playback. 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.

Basically, there’s an RC combination that allows you to set how fast the IC will react to varying levels of the signal. Sign up using Email and Password. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

BA Datasheet(PDF) – Rohm

Email Required, but never shown. I don’t see that in the datasheet I linked to above – you must have a different one. The text next to Fig.

It won’t be super high-fidelity, but maybe good enough for a guitar stomp box.

I have a preamp rescued from an old stereo: So that looks very much like Automatic Level Control, though Audio Limiter Control is a close relative, if not exactly the same. 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.

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Sign up or log in Sign up using Google. Instead, an circuit tries to adjust the na3308 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.

It’s a major feature of this chip, and I guess it’s assumed you know what it is as you chose the chip. That’s the one I linked to – it has no datazheet in it. The ALC signal is taken from the output, via a diode and an external capacitor. It is the ROHM datasheet form alldatasheet.

Fancy posting a link to it? If you look at the datasheet, there is an example application circuit: I have looked for meanings of ALC online, and I have found 2 possible meanings that would fit this device: 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.

The same tape head is also used for both functions. The application example on page 3 gives us some idea. 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. Home Questions Tags Users Unanswered. It looks like the IC is intended to be used with cassette tape recorders.

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Post as a guest Name. Don’t you just hate it when they do that? By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand ab3308 your continued use of the website is subject to these policies.

BA3308 Datasheet PDF

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. That means it’s a peak detector, whose level is then used to control the amplifier’s amplification. Sign up using Facebook.

Dual Preamplifier With Alc

Not really helpful in answering the question. Cheapo recorders often don’t have a potentiometer where one can set the recording level.

What is ALC on a preamp? I have looked for meanings of ALC online, and I have found 2 possible meanings that would fit this device:. How should I connect it?