○Product structure：Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays

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TSZ02201-0V2V0E100000-1-2

© 2012 ROHM Co., Ltd. All rights reserved.

2013.07.12 Rev.002

www.rohm.co.jp

TSZ22111・14・001

Datasheet

Sound Processor Series for Car Audio

Sound processor with Built-in

2-band Equalizer

BD37503FV

●General Description

Sound processor which has built-in 4input selector and

2-band equalizer filter. And, loudness filter and 2nd-order

anti-aliasing filter which attenuate noise occurs at output

of DAC are available, either one by switching.

●Features

 Built-in differential input selector that can make

various combination of single-ended / differential

input.

 Reduce switching noise by using advanced switch

circuit

 Built-in ground isolation amplifier inputs, ideal for

external stereo input.

 Decrease the number of external components by

built-in 2nd-order anti-aliasing filter

 Decrease the number of external components by

built-in 2-band equalizer filter and loudness filter.

 A PCB area can be reduced and PCB layouts become

easy thanks to that signal flow is gathered to one

direction by arrangement of input and output left side

and right side separately.

 It is possible to control by 3.3V / 5V for I

controller.

●Applications

 It is the optimal for the car audio. Besides, it is

possible to use for the audio equipment of mini

Compo, micro Compo, TV etc with all kinds.

●Key Specifications

 Total harmonic distortion：

0.001%(Typ.)

 Maximum input voltage：

2.2Vrms(Typ.)

 Common mode rejection ratio：

50dB(Min.)

 Maximum output voltage：

2.1Vrms(Typ.)

 Output noise voltage：

5.8μVrms(Typ.)

 Residual output noise voltage：

2.8μVrms (Typ.)

 Ripple rejection:

-70dB (Typ.)

 Operating temperature range

-40℃ to +85℃

●Package

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

SSOP-B20

6.50mm x 6.40mm x 1.45mm

SSOP-B20

●Typical Application Circuit

Figure 1. Application Circuit Diagram