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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BA3308 Datasheet PDF

Notice how the amplifier is used for amplifying for both recording and playback. Home Questions Tags Users Unanswered. 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 dtasheet high to cause saturation.

What is ALC on a preamp? Post as a guest Name.

BA IC PREAMP DUAL W/ALC 9SIP Rohm datasheet pdf data sheet FREE from

It looks like the IC is intended to be used with cassette tape recorders. I have looked for meanings of ALC online, and I have found 2 possible meanings that would fit this device: Don’t you just hate it when they do that? That’s the one I linked to – it has no circuit in it.

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If you look at the datasheet, there is an example bw3308 circuit: The ALC signal is taken from the output, via a diode and an external capacitor. It won’t be super high-fidelity, but maybe good enough for a guitar stomp box.

Post Your Answer Discard By clicking ba33308 Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that datashet continued use of the website is subject to these policies.

I have looked for meanings of ALC online, and I have found 2 possible meanings that would fit this device:. I don’t know what you plan to do with the part, but an obvious choice would be an audio compressor.

Fancy posting a link to it?

BA 데이터시트(PDF) – Rohm

The same tape dataaheet is also used for both functions. Email Required, but never shown. 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. That means it’s a peak detector, whose level is then used to control the amplifier’s amplification. Sign up using Facebook. Sign up or log in Sign up using Google.

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. The text next to Fig.

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 catasheet 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.

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Sign up using Email and Password. 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.

Dual Preamplifier With Alc

If they talk all the time about ALC, and fail to explain what it is, all I can say then is ddatasheet the datasheet stinks. I don’t see that in the datasheet I linked to above – you must have a different one. Basically, there’s an RC combination that allows you to set how fast the IC will react to varying levels of the signal. It is the ROHM datasheet form alldatasheet.

Not really helpful in answering the question. Cheapo recorders often don’t have a potentiometer where one can set the recording level. The application example on page 3 gives us some idea. It’s a major feature of this chip, and Dataeheet guess it’s assumed you know what it is as you chose the chip.

I have a preamp rescued from an old stereo: