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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Dual Preamplifier With Alc
It’s a major feature of this chip, and I guess it’s assumed you know what it is as you chose the chip. I have looked datashfet meanings of ALC online, and I have found 2 possible meanings that would fit this device: ALC automatic level dattasheet 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’s the one I linked to – it has no circuit in it. The same tape head is also used for both functions.
BA datasheet, Pinout ,application circuits Dual Preamplifier With Alc
Home Questions Tags Users Unanswered. 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. Sign up using Email and Password.
BA3308 Datasheet PDF
Basically, there’s an RC combination that allows you to set how fast the IC will react to varying levels of the signal. Post as a guest Name. Don’t you just hate it when they do that? Notice how the amplifier is used for amplifying for both recording and playback.
Cheapo recorders often don’t have a potentiometer where one can set the recording level. I don’t know what you plan to do with the part, but an obvious choice would be an audio compressor. The text next to Fig.
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. 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.
It looks like the IC is intended to be used with cassette tape recorders. What is ALC on a preamp? Email Required, but never shown.
I have looked for meanings of ALC ba330, and I have found 2 possible meanings that would fit this device:. Not really helpful in answering the question.
I don’t see that in the datasheet I linked to above – you must have a different one. Instead, an circuit tries to adjust ab3308 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.
BA 데이터시트(PDF) – Unisonic Technologies
If you look at the datasheet, there is an example application circuit: Sign up using Facebook. How should I connect it? It is the ROHM datasheet form alldatasheet. 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.