參數(shù)資料
型號(hào): AK4673EG
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: Stereo CODEC with MIC/HP-AMP and Touch Screen Controller
中文描述: 立體聲編解碼器麥克風(fēng)/惠普- AMP及觸摸屏控制器
文件頁數(shù): 42/107頁
文件大?。?/td> 1171K
代理商: AK4673EG
[AK4673]
MS0670-E-00
2007/09
- 42 -
MIC Gain Amplifier
The AK4673 has a gain amplifier for microphone input. The gain of MIC-Amp is selected by the MGAIN1-0 bits (
Table
23
). The typical input impedance is 60k
Ω
(typ)@MGAIN1-0 bits = “00” or 30k
Ω
(typ)@MGAIN1-0 bits = “01”, “10” or
“11”.
MGAIN1 bit
MGAIN0 bit
0
0
0
1
1
0
1
1
Table 23. Mic Input Gain
MIC Power
When PMMP bit = “1”, the MPWR pin supplies power for the microphone. This output voltage is typically 0.75 x AVDD
and the load resistance is minimum 0.5k
Ω
. In case of using two sets of stereo mic, the load resistance is minimum 2k
Ω
for
each channel. Any capacitor must not be connected directly to the MPWR pin (
Figure 33
).
PMMP bit
MPWR pin
0
1
Table 24. MIC Power
MPWR pin
Input Gain
0dB
+20dB
+26dB
+32dB
(default)
(default)
Hi-Z
Output
Ω
MIC Power
Microphone
LIN1 pin
Microphone
RIN1 pin
Microphone
LIN2 pin
Microphone
RIN2 pin
Ω
Ω
Ω
Figure 33. MIC Block Circuit
相關(guān)PDF資料
PDF描述
AK4682 Multi-channel CODEC with 2Vrms Stereo Selector
AK4682EQ Multi-channel CODEC with 2Vrms Stereo Selector
AK4683_07 Asynchronous Multi-Channel Audio CODEC with DIR/T
AK4683EQ Asynchronous Multi-Channel Audio CODEC with DIR/T
AK4683 Asynchronous Multi-Channel Audio CODEC with DIR/T
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AK4675 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/RCV/HP/SPK-AMP
AK4675EG 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/RCV/HP/SPK-AMP
AK4682 制造商:AKM 制造商全稱:AKM 功能描述:Multi-channel CODEC with 2Vrms Stereo Selector
AK4682AEQ 功能描述:IC CODEC MULTI-CHANNEL 48LQFP 制造商:akm semiconductor inc. 系列:* 零件狀態(tài):上次購買時(shí)間 標(biāo)準(zhǔn)包裝:1,000
AK4682EQ 制造商:AKM 制造商全稱:AKM 功能描述:Multi-channel CODEC with 2Vrms Stereo Selector