ba3840kv ROHM Co. Ltd., ba3840kv Datasheet - Page 6

• Manufacturer Part Number: ba3840kv
• Description: Preset Graphic Equalizer For Headphone Stereos
• Manufacturer: ROHM Co. Ltd.

FMeasurement circuit
FCircuit operation
(1)
(1) Flat position
By pulling up the FLAT pin to V
tics become flat.
(2) Rock position
By pulling up the ROCK pin to V
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 V
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.
560
Audio ICs
Preset graphic equalizer
CC
CC
, frequency characteris-
, mid-range frequencies
CC
, low frequencies are
(2)
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 V
easily will be cut off in accordance with the volume.
(3)
If the MUTE pin is pulled up to V
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)
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.)
Sound leak reduction circuit
MUTE pin
DET 2 pin
CC
, the sound frequencies close to 5kHz that leak
CC
, the effective graphic
BA3840KV