ba3888s ROHM Co. Ltd., ba3888s Datasheet

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ba3888s

Manufacturer Part Number
ba3888s
Description
High-definition Sound Processor
Manufacturer
ROHM Co. Ltd.
Datasheet
The BA3888S is a sound processor IC that performs phase and harmonic compensation on audio signals to accurately
reproduce the “rise” section of audio signals that determines the characteristics of the sound, and thus reproduce the
original recording as naturally as possible.
FApplications
VCRs, tape recorders and video equipped television
FFeatures
1) Corrects distortion in the rising section of audio sig-
2) To allow application with all types of speakers and
FAbsolute maximum ratings (Ta = 25_C)
FRecommended operating conditions (Ta = 25_C)
High-definition sound processor
BA3888S
Audio ICs
nals that results from miss-matched speakers and
amplifiers, and reproduces the original sound faith-
fully.
sources, the clarity can be adjusted using DC control.
3) DC control provided for selection of either processor
4) Bass boost can be set in the range 0dB to 9dB (Typ.)
5) A noise gate circuit naturally cuts hiss at low volume.
mode or bypass mode.
using external components.
437

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ba3888s Summary of contents

Page 1

... Audio ICs High-definition sound processor BA3888S The BA3888S is a sound processor IC that performs phase and harmonic compensation on audio signals to accurately reproduce the “rise” section of audio signals that determines the characteristics of the sound, and thus reproduce the original recording as naturally as possible. ...

Page 2

... Audio ICs FBlock diagram FElectrical characteristics(unless otherwise noted 25_C 100k and V L 438 = 12V 1kHz 2.5V and V = 5V) CTL ref BA3888S = 10dBV 600 , IN g ...

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... Audio ICs FMeasurement circuit BA3888S 439 ...

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... Therefore, when replaying audio on audio playback systems extremely important that FOperating principle To solve the problems described above, the BA3888S performs the audio signal processing described below. Phase shift compensation 440 the rise section of the signal be expressed accurately with respect to the original sound ...

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... IC between processing mode and bypass mode. When processing mode is selected, the audio signal is en- hanced using the compensation circuits described above before being output. When bypass mode is selected, the signal bypasses all of the compensation circuits, and only passes through a buffer amplifier before output. BA3888S 441 ...

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... Audio ICs Control table The mode and definition level (treble level) are set by ap- plying a voltage between 0V (GND) and V pin. The maximum voltage V is the voltage applied to ref the V pin. ref Recommended range for applied voltage 442 to the CTL ref BA3888S ...

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... Audio ICs FApplication circuit BA3888S 443 ...

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... IC and the exter- nal components. (4) License This IC is manufactured under license from BBE Sound Inc. (U.S.A.). A license agreement with BBE Sound Inc. is required to use this component. BA3888S ...

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