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參數(shù)資料
| 型號： | MIC3001BML |
| 廠商： | Micrel Inc |
| 文件頁數(shù)： | 62/76頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC FOM MANAGEMENT W/CALIBR 24MLF |
| 標準包裝： | 75 |
| 類型： | 收發(fā)器 |
| 規(guī)程： | SDHj Sonet |
| 電源電壓： | 3 V ~ 3.6 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-VFQFN 裸露焊盤，24-MLF? |
| 供應(yīng)商設(shè)備封裝： | 24-MLF?（4x4） |
| 包裝： | 托盤 |
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CS4205
DS489PP4
65
12.1.3
Microphone Inputs
Figure 28 illustrates an input circuit suitable for dy-
namic and electret microphones. Electret, also
known as phantom-powered, microphones use the
right channel (ring) of the jack for power. The de-
sign also supports the recommended advanced fre-
quency response for voice recognition as specified
in PC 99 and PC 2001. The microphone input of the
CS4205 has an integrated pre-amplifier. Using
combinations of the 10dB bit in the Misc. Crystal
Control Register (Index 60) and the 20dB bit in the
Mic Volume Register (Index 0Eh) the pre-amplifier
gain can be set to 0 dB, 10 dB, 20 dB, or 30 dB.
12.1.4
PC Beep Input
The PC_BEEP input is useful for mixing the output
of the “beeper” (timer chip), provided in most PCs,
with the other audio signals. When the CS4205 is
held in reset, PC_BEEP is passed directly to the
line output. This allows the system sounds or
“beeps” to be available before the AC ’97 interface
has been activated. Figure 29 illustrates a typical
input circuit for the PC_BEEP input. If PC_BEEP
is driven from a CMOS gate, the 4.7 k
resistor
should be tied to analog ground instead of +5VA.
Although this input is described for a low-quality
“beeper”, it is of the same high-quality as all other
analog inputs and may be used for other purposes.
12.1.5
Phone Input
One application of the PHONE input is to interface
to the output of a modem analog front end (AFE)
device so that modem dialing signals and protocol
negotiations may be monitored through the audio
system. Figure 30 shows a design for a modem
connection where the output is fed from the
CS4205 MONO_OUT pin through a divider. The
divider ratio shown does not attenuate the signal,
providing an output voltage of 1 VRMS. If a lower
output voltage is desired, the resistors can be re-
placed with appropriate values, as long as the total
load on the output is kept greater than 10 k
. The
PHONE input is divided by 6 dB to accommodate
a line-level source of 2 VRMS.
12.2
Analog Outputs
The analog output section provides a stereo and a
mono output. The MONO_OUT, LINE_OUT_L,
and LINE_OUT_R pins require 680 pF to 1000 pF
NPO dielectric capacitors between the correspond-
ing pin and analog ground. Each analog output is
DC-biased up to the Vrefout voltage signal refer-
0.1
F
X7R
100
0.1
F
X7R
MIC1/MIC2
10
F
ELEC
AGND
+5VA
2.2 k
1.5 k
AGND
+
Figure 28. Microphone Input
4.7 k
PC_BEEP
+5VA (Low Noise) or
AGND if CMOS Source
PC-BEEP-BUS
47 k
2.7 nF
X7R
0.1
F
X7R
AGND
Figure 29. PC_BEEP Input
PHONE
MONO_OUT
PHONE
MONO_OUT
6.8 k
1.0
F
0
6.8 k
1.0
F
47 k
AGND
1000 pF
Figure 30. Modem Connection
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| MIC3001BML TR | 功能描述:IC FOM MANAGEMENT W/CALIBR 24MLF RoHS:否 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:- 標準包裝:1,140 系列:AU 類型:收發(fā)器 驅(qū)動器/接收器數(shù):1/1 規(guī)程:CAN 電源電壓:5.3 V ~ 27 V 安裝類型:表面貼裝 封裝/外殼:14-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:14-SO 包裝:管件 其它名稱:935267940512AU5790D14AU5790D14-ND |
| MIC3001BMLTR | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:FOM Management IC with Internal Calibration |
| MIC3001GML | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC F/O Transceiver Mgt. IC with Internal Calibration RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| MIC3001GML TR | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC F/O Transceiver Mgt. IC with Internal Calibration RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| MIC3001GMLTR | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:FOM Management IC with Internal Calibration |
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