BD37544FS Datasheet, PDF (1/5 Pages) Rohm – Silicon Monolithic Integrated Circuit

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Structure:
Silicon Monolithic Integrated Circuit
Product:
Sound Processor for car audio
Type:
BD37544FS
Package:
SSOP-A32
●Feature
1. Reduce switching noise of input gain control, mute, main volume, fader volume, bass, middle, treble, super Bass
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, LPF for subwoofer, HPF.
And, possible to control Q, Gv, fo of 3-band equalizer and fc of LPF and fc of HPF 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 and mixing attenuation.
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
Symbol
Limits
Unit
Power supply Voltage
VCC
10.0
V
Input voltage
VIN
VCC+0.3～GND-0.3
V
Power Dissipation
Pd
950 ※1
mW
Storage Temperature
Tastg
-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
Symbol
Min.
Typ.
Max.
Unit
Power supply Voltage
VCC
7.0
－
9.5
V
Temperature
Topr
-40
－
+85
℃
※Design against radiation-proof isn’t made.
REV. A