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Structure:
Product:
Silicon Monolithic Integrated Circuit
Sound Processor for car audio
Type:
BD37541FS
Package:
SSOP-A32
●Feature
1. Reduce switching noise of input gain control, mute, main volume, fader volume, bass, middle, treble, loudness,
by using advanced switch circuit [Possible to control all steps]
2. Built-in ground isolation amplifier inputs, ideal for external stereo input.
3. Built-in differential input selector that can make various combination of single-ended / differential input.
4. Built-in input gain controller reduce switching noise for volume of a portable audio input.
5. Decrease the number of external components by built-in 3-band equalizer filter.
And, possible to control Q, Gv, fo of 3-band equalizer by I2C BUS control freely.
6. It is possible for the bass, middle, treble to the gain adjustment quantity of ±20dB and 1 dB step gain adjustment.
7. It is equipped with output terminals of Subwoofer. Moreover, the stereo signal of the front and rear also can be
output by the I2C BUS control.
8. Built-in mixing input.
9. Bi-CMOS process is suitable for the design of low current and low energy. And it provides more quality for
small-scale regulator and heat in a set.
10. Package is SSOP-A32. Putting input-terminals together and output-terminals together can make PCB layout
easier and can makes area of PCB smaller.
11. It is possible to control by 3.3V / 5V for I2C BUS.
●Absolute Maximum Ratings (Ta=25℃)
Parameter
Power supply Voltage
Input voltage
Power Dissipation
Storage Temperature
Symbol
VCC
VIN
Pd
Tastg
Limits
10.0
VCC+0.3~GND-0.3
950 ※1
Unit
V
V
mW
℃
-55~+150
※1 At Ta=25°C or higher, this value is decreaced to 8.5mW/°C
When Rohm standard board is mounted.
Rohm standard board:
Size:70×70×1.6(mm3)
material:FR4 glass-epoxy substrate (copper foil area: not more than 3%).
●Operating Range
Parameter
Power supply Voltage
Temperature
Symbol
VCC
Topr
Min.
7.0
-40
Typ.
-
Max.
9.5
+85
Unit
V
℃
-
※Design against radiation-proof isn’t made.
REV. A