ba3812ls ROHM Co. Ltd., ba3812ls Datasheet

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ba3812ls

Manufacturer Part Number
ba3812ls
Description
5-channel Graphic Equalizer
Manufacturer
ROHM Co. Ltd.
Datasheet
1.BA3812LS.pdf (6 pages)
The BA3812L is a five-point graphic equalizer that has all the required functions integrated onto one IC. The IC is com-
prised of the five tone control circuits and input and output buffer amplifiers.
The BA3812L features low distortion, low noise, and wide dynamic range, and is an ideal choice for Hi-Fi stereo applica-
tions. It also has a wide operating voltage range (3.5V to 16V), which means that it can be adapted for use with most
types of stereo equipment.
The five center frequencies are independently set using external capacitors, and as the output stage buffer amplifier and
tone control section are independent circuits, fine control over a part of the frequency bandwidth is possible, By using
two BA3812Ls, it is possible to construct a 10-point graphic equalizer.
The amount of boost and cut can be set by external components.
FApplications
Radio cassette players, home stereo systems and car stereo systems.
FFeatures
1) Minimizes the number of components required to
2) Low distortion and low noise.
3) Wide operating power supply voltage range (3.5V to
FAbsolute maximum ratings (Ta = 25_C)
FRecommended operating conditions (Ta = 25_C)
5-channel graphic equalizer
BA3812L
Audio ICs
build a graphic equalizer.
16V).
4) Low current dissipation (5 mA).
5) Wide dynamic range (V
6) Built-in input and output buffer amplifiers.
OM
= 2.1V
rms
/ V
CC
= 8V).
445

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ba3812ls Summary of contents

Page 1

... The five center frequencies are independently set using external capacitors, and as the output stage buffer amplifier and tone control section are independent circuits, fine control over a part of the frequency bandwidth is possible, By using two BA3812Ls possible to construct a 10-point graphic equalizer. The amount of boost and cut can be set by external components. ...

Page 2

Audio ICs FBlock diagram FElectrical characteristics (unless otherwise noted 25_C, V 446 = 8V, and fin = 1kHz) CC BA3812L ...

Page 3

Audio ICs FMeasurement circuit FApplication example BA3812L 447 ...

Page 4

Audio ICs By using more than one IC the following applications are also possible: (1) 10-point single-channel graphic equalizer As shown in Fig. 2, with two ICs it is possible to construct a 10-point single-channel graphic equalizer, 448 (2) 7-point ...

Page 5

Audio ICs FSolid-state inductor A solid state inductor uses an active element and has the equivalent function of an inductor. The circuit shown in Fig used in the BA3812L. This circuit employs two capacitors, a potentiometer, and a ...

Page 6

Audio ICs FExternal dimensions (Units: mm) 450 BA3812L ...

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