Rohm Productdetail
内置2频段均衡器的声音处理器_BD37522FS
以提升整机设计效率为目的，实现了控制软件通用化和电路板通用化的系列。内置调节低音和高音音质的2频段均衡器。其滤波器无需外接部件。此外，通过3路输入选择器和音量、4ch独立控制的音量控制器，支持3个音乐来源输入和前、后的Lch/Rch的4通道输出。实现了高性能且外接部件少的省空间设计，适用于标准型整机。
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特性：
Vcc(Min.)[V]
7.0
Vcc(Max.)[V]
9.5
Iq[mA]
38.0
I/F
I2C BUS
Outputs
4
Volume Range
+15to-79, -∞
Tone Control Band
BASS, Treble
Number of of single input
4
Number of of ISO input
1
Input Gain[dB]
0to+20
Parametric EQ
Yes
LOUDNESS
Yes
FADER[dB]
0to-79, -∞
THD[%]
0.001
Output Noise[µVrms]
3.8
Output voltage(Max.)[Vrms]
2.3
Operating Temperature (Min.)[°C]
-40
Operating Temperature (Max.)[°C]
85
特点：
・Reduce switching noise of input gain control, mute, main volume,fader volume, bass, treble, loudness by using advanced switch circuit
[Possible to control all steps]
・Built-in ground isolation amplifier inputs, ideal for external stereo input.
・Built-in input gain controller reduce switching noise for volume of
a portable audio input.
・Decrease the number of external components by
built-in 2-band equalizer filter and loudness filter.
And, possible to control Q, Gv, fo of 2-band equalizer
and fo, Gv of loudness by I²C BUS control freely.
・It is possible for the bass, treble to the gain adjustment
quantity of ±20dB and 1 dB step gain adjustment.
・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.
・Package is SSOP-A24. Putting input-terminals together
and output-terminals together can make PCB layout easier
and can makes area of PCB smaller.)
・It is possible to control by 3.3V / 5V for I²C BUS.