BD3491FS
内置环绕功能的声音处理器
BD3491FS
内置环绕功能的声音处理器
内置6输入选择器和无输入阻抗变动的可变音量。还是可通过外接部件实现2频段均衡器（低音/高音，增益调节幅度±14dB，2dB步进）、低音增益/输出增益/环绕声的声音处理器。
主要规格
特性：
Input (ch) ?
Stereo 6
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]
13.6x7.8 (t=2.01)
特点：
· 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.
