BD3491FS_14 Datasheet, PDF (1/34 Pages) Rohm – Sound Processor with Built-in Surround Sound Function

Datasheet
Analog Sound Processor series
Sound Processor with Built-in
Surround Sound Function
BD3491FS
General Description
Built in stereo 6 input selectors and volume that there is
not an impedance change of a volume terminal. And this
is sound processor can realize 2-band equalizer
(Bass/Treble, Gain±14dB / 2dB_step) and BassBoost,
Output gain, Surround by external components.
Features
Equipped with 6 single ended stereo input
selectors
Built-in input gain controller suitable for mobile audio.
Volume input terminal can be used as a microphone
input terminal since its impedance remains constant
even if volume setting is changed.
Bi-CMOS process is suitable for the design of low
current and low energy. It also provides more quality
for Bi-CMOS small scale regulator and heat in a set.
The package of this IC is SSOP-A32. Sound input
terminals and output terminals arrangement is
optimized for easy and fast layout of PCB pattern. At
the same time, it minimizes PCB area.
Applications
Suitable for mini-components or micro components.
Used for audio equipment of TV, DVD, etc.
Typical Application Circuit
Key Specification
Current upon no signal:
Total Harmonic Distortion:
Maximum Input Voltage:
Crosstalk between Selectors:
Volume Control Range:
Output Noise Voltage:
Residual Output Noise Voltage:
Operating Temperature Range:
7mA(typ)
0.002%(typ)
2.4Vrms(typ)
100dB(typ)
0dB to -87dB
5µVrms(typ)
5µVrms(typ)
-40℃ to +85℃
Package
SSOP-A32
W(typ) x D(typ) x H(max)
13.60mm x 7.80mm x 2.01mm
SSOP-A32
Figure 1. Application Circuit Diagram
○Product structure：Silicon monolithic integrated circuit ○This product is not designed for protection against radioactive rays
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TSZ22111・14・001
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TSZ02201-0C2C0E155560-1-2
1.APR.2014 Rev.004