參數(shù)資料
型號(hào)： AK4665AEN
廠商： Asahi Kasei Microsystems Co.,Ltd
元件分類： Codec
英文描述： 20-Bit Stereo CODEC with MIC/HP-AMP
中文描述： 20位立體聲編解碼器麥克風(fēng)/惠普腺苷
文件頁(yè)數(shù)： 36/52頁(yè)
文件大?。?/td> 541K
代理商： AK4665AEN
ASAHI KASEI
[AK4665A]
MS0440-E-01
2006/05
- 36 -
2) ADC (Line In: in case of common jack with headphone)
Power Supply
Clock Input
PMADC bit
ADC Internal
State
AINL1/R1 pins
PD(Power-down)
Init Cycle
Normal Operation
(8) 2081/fs
SDTO pin
(9) GD
(7)
(5)
PD
(9) GD
(Hi-Z)
(Hi-Z)
Don’t care
PMVCM bit
(1) >150ns
(6) >0
FS3-0, DFS bits
NVSS pin
(2) >0
(3) >0
(4) >0
0V
HVDD
Don’t care
0V
PDN pin
PMCP bit
XH, X
0H, 0
0H, 0
(10)
PMHPL/R bits
(11)
Figure 22. Power-up/down Sequence of ADC
(1) PDN pin should be set to “H” at least 150ns after the power is supplied.
(2) FS3-0 and DFS bits should be set after PDN pin goes to “H”.
(3) PMVCM bit should be changed to “1” after FS3-0 and DFS bits are set.
(4) PMCP bit should be changed to “1” after PMVCM bit is changed to “1”. The charge pump circuit is powered-up and
NVSS pin goes to –HVDD voltage according to the setting of FS3-0 and DFS bits.
(5) External clocks (MCLK, BICK and LRCK) are needed to operate the charge pump circuit and ADC.
(6) PMADC bit should be changed to “1” after NVSS pin goes to –HVDD voltage.
(7) When PMADC bit is changed to “1”, AINL1/R1 pins are biased to VCOM voltage. Rising time constant is
determined by input capacitor for AC coupling and input resistance. In case of 1μF input capacitor, time constant is
τ
= 1μF x 60k
= 60ms (typ)
(8) The analog part of ADC is initialized during 2081/fs (=47ms@fs=44.1kHz) after exiting the power-down state.
SDTO is “L” at that time.
(9) Digital output corresponding to analog input has the group delay (GD) of 17/fs (=385μs@fs=44.1kHz).
(10) When PMCP bit is changed to “0”, the charge pump circuit is powered-down and NVSS pin becomes 0V. Falling
time constant is determined by capacitor and internal resistance (typ 17.5k
). In case of 2.2μF capacitor, time
constant is
τ
= 2.2μF x 17.5k
= 38.5ms (typ)
(11) When PMHPL/R bits = “0”, HPL/R pins are connected to AVSS with internal pull-down resistance (typ 100k
).
相關(guān)PDF資料
PDF描述
AK4671 Stereo CODEC with MIC/RCV/HP-AMP
AK4671EG Stereo CODEC with MIC/RCV/HP-AMP
AK4673 Stereo CODEC with MIC/HP-AMP and Touch Screen Controller
AK4673EG Stereo CODEC with MIC/HP-AMP and Touch Screen Controller
AK4682 Multi-channel CODEC with 2Vrms Stereo Selector
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AK4666VQ 功能描述:IC CODEC STEREO 20BIT LQFP 制造商:akm semiconductor inc. 系列:* 零件狀態(tài):上次購(gòu)買時(shí)間 標(biāo)準(zhǔn)包裝:1,000
AK4671 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/RCV/HP-AMP
AK4671_10 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/RCV/HP-AMP
AK4671EG 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/RCV/HP-AMP
AK4673 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/HP-AMP and Touch Screen Controller
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*