BA3314F Rohm, BA3314F Datasheet

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BA3314F

Manufacturer Part Number
BA3314F
Description
Dual preamplifier with ALC detector circuit
Manufacturer
Rohm
Datasheet

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The BA3314F is a dual preamplifier IC with built-in ALC detector circuit, designed for audio applications. It comes in a
compact 14-pin SOP package, and has two record / playback preamplifiers, and an ALC detector circuit. The preamplifier
can be directly coupled to the tape head without coupling capacitors to prevent tape head magnetization and “pop” noise
generation.
With the built-in ALC detector circuit, an ALC circuit with large dynamic range can be constructed with addition of just
an external time constant circuit.
FApplications
Audio equipment
FFeatures
1) Input bias circuit does not require coupling capaci-
2) Built-in ALC circuit with external time constant circuit.
FBlock diagram
Dual preamplifier with ALC detector
circuit
BA3314F
Audio ICs
tors.
3) Wide operating power supply voltage range.
4) High gain.
5) Low noise.
217

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BA3314F Summary of contents

Page 1

... BA3314F The BA3314F is a dual preamplifier IC with built-in ALC detector circuit, designed for audio applications. It comes in a compact 14-pin SOP package, and has two record / playback preamplifiers, and an ALC detector circuit. The preamplifier can be directly coupled to the tape head without coupling capacitors to prevent tape head magnetization and “pop” noise generation ...

Page 2

... Audio ICs FAbsolute maximum ratings (Ta = 25_C) FRecommended operating conditions (Ta = 25_C) FElectrical characteristics (unless otherwise noted 25_C, V 218 = 8V and f= 1kHz) CC BA3314F ...

Page 3

... ALC time g constant influences the ALC transient characteristics. In particular less than 3.9k or the time constant ca- g pacitor is less than 47 F, the ALC may operate exces- sively. Do not use smaller values than those recom- mended for these components. BA3314F 219 ...

Page 4

... Audio ICs FApplication example FElectrical characteristics curve 220 FExternal dimensions (Units: mm) BA3314F ...

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