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BA3840KV Scheda tecnica(PDF) 6 Page - Rohm

Il numero della parte BA3840KV
Spiegazioni elettronici  Preset graphic equalizer for headphone stereos
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Produttore elettronici  ROHM [Rohm]
Homepage  http://www.rohm.com
Logo ROHM - Rohm

BA3840KV Scheda tecnica(HTML) 6 Page - Rohm

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560
Audio ICs
BA3840KV
FMeasurement circuit
FCircuit operation
(1)
Preset graphic equalizer
(1) Flat position
By pulling up the FLAT pin to VCC, frequency characteris-
tics become flat.
(2) Rock position
By pulling up the ROCK pin to VCC, low frequencies are
boosted by about 7dB. High frequencies are also ad-
justed to balance the subjectively heard sound.
(3) Pop position
By pulling up the POPS pin to VCC, mid-range frequencies
are boosted by about 6dB and combined with the rock
position characteristics.
(4) Jazz position
By open-circuiting the above three pins, low frequencies
are boosted by 14dB. High frequencies are also adjusted
to balance the subjectively heard sound.
(2)
Sound leak reduction circuit
If the stereo output signal from the power amplifier is
mixed and input to the DET 1 pin and the PLSS pin pulled
up to VCC, the sound frequencies close to 5kHz that leak
easily will be cut off in accordance with the volume.
(3)
MUTE pin
If the MUTE pin is pulled up to VCC, the effective graphic
equalizer position will be FLAT regardless of the selected
position. (However, if the pop position has been selected,
the mid-range boost will be maintained.)
(4)
DET 2 pin
If the stereo output signal from the power amplifier is
mixed and input to the DET 2 pin, the effective graphic
equalizer position will be FLAT during high level output
regardless of the selected position. (However, if the pop
position has been selected, the mid-range boost will be
maintained.)


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