○Product structure：Silicon monolithic integrated circuit ○This product has no designed protection against radioactive rays

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TSZ02201-0C2C0E100360-1-2

© 2015 ROHM Co., Ltd. All rights reserved.

16.Dec.2015 Rev.001

TSZ22111・14・001

www.rohm.com

General-Purpose 6ch Electronic Volume

with Built-in Advanced Switch

BD3461FS

General Description

BD3461FS is a 6ch electronic volume which has the

best audio efficiency in the industry. It has an external

sound mixing function (with

volume) in the favorite

channel

for

mixing

of

portable

audio

and

car

navigation

’s guide sound. Also, BD3461FS has a

volume switching shock sound prevention technique

called

“Advanced Switch,” supporting the construction

of high quality car audio space by simple control.

Features



Reduce switching noise of volume by using

Advanced Switch circuit.



Mixing for external sound monaural 3ch. It is

possible that is mixed to front/Rear/Sub output

Lch/Rch independently.



Built-in 3ch ATT for external sound mixing that can

be controlled independently.



Built-in buffered ground isolation amplifier inputs,

ideal for external input.



Energy-saving design resulting in low-current

consumption by utilizing the Bi-CMOS process. It

has the advantage in quality over scaling down the

power heat control of internal regulators.



Arranges all I/O terminals together for easier PCB

layout and smaller PCB area.



Applications

It is optimal for car audio. It can also be used for car

navigation, audio equipment of mini Compo, micro

Compo, DVD, TV, etc.

Key Specifications



Power Supply Voltage Range:

7.0V to 9.5V



Circuit Current (no signal):

25mA(Typ)



Total Harmonic Distortion:

0.0004% (Typ)



Maximum Input Voltage:

2.35Vrms (Typ)



Cross-talk between Selectors:

-105dB (Typ)



Volume Control Range:

+23dB to -79dB



Output Noise Voltage:

1.9µVrms(Typ)



Residual Output Noise Voltage:

1.6µVrms (Typ)



Operating Temperature Range:

-40°C to +85°C

Package

W(Typ) x D(Typ) x H(Max)

Typical Application Circuit

VCC

OUTS2

INR1

10μ

0.1μ

4.7μ

OUTS1

OUTR2

OUTR1

OUTF2

OUTF1

SDA

SCL

CS

4.7μ

4.7μ

4.7μ

4.7μ

1μ

1μ

1μ

10μ

4.7μ

10μ

10μ

GND

FIL

2.2K

4.7μ

1μ

1μ

1μ

10μ

10μ

INF1

INF2

INR2

INS1

INS2

EXT3

EXT1

EXT2

DIFFOUT

NIN

PIN

10μ

100k

22

21

20

19

18

17

16

15

14

13

3

4

5

6

7

8

9

10

11

12

100k

100k

100k

100k

24

23

1

2

VCC/2

100k

100k

100k

BUFFERED

GND ISO AMP

VCC

GND

100k

100k

100k

Independent

control

■6ch Volume

+23dB～-79ｄB/1dB step,-∞

★：Advanced switch circuit

■Mixing ATT

0dB～-32dB/8dB step,

-32dB～-64dB/16dB step,-∞

+23dB to -79dB / 1dB

0dB to -32dB / 8dB

-32dB to -64dB / 16dB

Unit

R : [Ω]

C : [F]

SSOP-A24

10.00mm x 7.80mm x 2.10mm

Datasheet

Datasheet