Datasheet BA3822FS, BA3824LS, BA3823LS, BA3822LS Datasheet (ROHM)

Audio ICs

5-channel stereo graphic equalizer

BA3822LS / BA3822FS / BA3823LS / BA3824LS

The BA3822LS, BA3822FS, BA3823LS, and BA3824LS are monolithic, five-point stereo graphic equalizer ICs.
Each IC has two channels, and the five center frequencies for each channel are independently set using external capaci­tors. These ICs feature a wide operating power supply voltage range (V
24-pin SZIP and SSOP packages, depending on the type. This makes them an ideal choice for home stereo systems,
radio cassette players, and car stereos.
The difference between the ICs is the amount of boost and cut control. Choose according to the requirements of your
application.

Applications
Five-point stereo graphic equalizer for home and car stereo systems.

Features

1) Allows construction of a five-point stereo graphic
equalizer with a single IC.

2) Wide operating power supply voltage range (V

3.5V to 14V).

CC =

3) Low current dissipation (I

4) Available in compact SZIP/SSOP-A24 packages.

CC = 3.5V to 14V), and are available in compact

Q = 7mA).

Absolute maximum ratings (Ta = 25C)

Recommended operating conditions (Ta = 25C)

550

Audio ICs BA3822LS / BA3822FS / BA3823LS / BA3824LS

Electrical characteristics
BA3822LS and BA3822FS
(unless otherwise noted, Ta = 25C, V

BA3823LS
(unless otherwise noted, Ta = 25C, V

CC = 8V, VIN = 100mVrms (1kHz), RL = 20kΩ, and F = FLAT)

CC = 8V, VIN = 100mVrms (1kHz), RL = 20kΩ, and F = FLAT)

BA3824LS
(unless otherwise noted, Ta = 25C, V

CC = 8V, VIN = 100mVrms (1kHz), RL = 20kΩ, and F = FLAT)

551

Audio ICs BA3822LS / BA3822FS / BA3823LS / BA3824LS

Differences between the BA3822LS, BA3822FS, BA3823LS and BA3824LS

Control range gain External components

As the ICs have different control range gain, the external
component values are different for the same center fre­quencies.
Ripple rejection
The BA3823LS circuit design has excellent ripple rejec­tion, and the external ripple filter can be omitted.

Application examples

552

Audio ICs BA3822LS / BA3822FS / BA3823LS / BA3824LS

553

Audio ICs BA3822LS / BA3822FS / BA3823LS / BA3824LS

External dimensions (Units: mm)

554