BD3490FV
内置2频段均衡器的声音处理器
BD3490FV
内置2频段均衡器的声音处理器
内置2频段均衡器的声音处理器消耗电流低，支持4.75V～9.5V的动作电源电压。适用于BOOM BOX的语音控制。罗姆的声音处理器兼顾了音质和易用性。
主要规格
特性：
Input (ch) ?
Stereo 4
Input Gain (dB/Ad-Sw) ?
+20~0/-
Vcc(Min.)[V]
4.75
Vcc(Max.)[V]
9.5
Iq[mA]
7
Tone Control Band
BASS, Treble
Volume (ch/Ad-Sw) ?
2/-
Volume Range/Step (dB/dB) ?
0~-87, -∞/1
[I] Independent from Input Selector / [C] Cascade from Input Selector ?
I
Output Voltage (V, typ)
2.4
THD+N (dB)
0.002
EQ (number of Band) ?
2
Output Noise[µVrms]
5
Surround
Yes
I/F
I2C
Power Supply Voltage (V) ?
4.75~9.5
Temperature (Min.)[°C]
-40
Temperature (Max.)[°C]
85
Package Size [mm]
10x7.6 (t=1.35)
特点：
- Low noise (5μVrms(TYP.)) and low distortion(0.002% (TYP.)).
- Built-in simple surround. Furthermore, it can constitute good surround of sound image normal position with an external part.
- It can constitute a bass boost or output gain with an external part.
- When the volume setting exchanging, it can use a volume terminal as a microphone input terminal because there is not an impedance change of a volume terminal.
- 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.
- The package of this IC is SSOP-B28. It gathers a sound input terminals, sound output terminals respectively and it arranges them, to be arranging facilitates the laying-out of PCB pattern and reduces PCB area to one-way in the flow of the signal.
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