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參數(shù)資料
| 型號(hào)： | AFE1105E |
| 元件分類： | 圓形連接器 |
| 英文描述： | Circular Connector; No. of Contacts:12; Series:MS27467; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:15; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:15-97 RoHS Compliant: No |
| 中文描述： | HDSL / MDSL模擬前端 |
| 文件頁(yè)數(shù)： | 7/10頁(yè) |
| 文件大小： | 206K |
| 代理商： | AFE1105E |
7
AFE1105
rxHYB
AND rxLINE INPUT ANTI-ALIASING FILTERS
The –3dB frequency of the input anti-aliasing filter for the
rxLINE and rxHYB differential inputs should be about
1MHz. Suggested values for the filter are 750
for each of
the two input resistors and 100pF for the capacitor. Together
the two 750
resistors and the 100pF capacitor result in
–3dB frequency of just over 1MHz. The 750
input resis-
tors will result in a minimal voltage divider loss with the
input impedance of the AFE1105.
This circuit applies at both T1 and E1 rates. For slower rates,
the antialiasing filters will give best performance with their
–3dB frequency approximately equal to the bit rate. For
example, a –3dB frequency of 500kHz should be used for a
single pair bit rate of 500kbps.
rxHYB AND rxLINE INPUT BIAS VOLTAGE
The transmitter output on the txLINE pins is centered at
midscale, 2.5V. But, the rxLINE input signal is centered at
1.5V in the circuit shown in Figure 2 above.
Inside the AFE1105, the rxHYB and rxLINE signals are
subtracted as described in the paragraph on echo cancella-
tion above. This means that the rxHYB inputs need to be
centered at 1.5V just as the rxLINE signal is centered at
1.5V. REF
N
(Pin 36) is a 1.5V voltage source. The external
compromise hybrid must be designed so that the signal into
the rxHYB inputs is centered at 1.5V.
FIGURE 2. Basic Connection Diagram.
PLL
OUT
REF
P
V
CM
REF
N
AFE1105
PLL
IN
txDAT
txCLK
rxSYNC
rxGAIN1
rxD13 - rxD2
PGND
DGND
AGND
AGND
AGND
AGND
rxLOOP
txLINE
P
txLINE
N
rxHYB
P
rxHYB
N
rxLINE
N
rxLINE
P
rxGAIN0
1k
200
0.1μF
12
DV
DD
0.01μF
14.7
14.7
Neg
Neg
Pos
Pos
750
750
750
750
100pF
100pF
Compromise
Hybrid
0.01μF
Input anti-alias
filter f
C
1MHz
1:2.3 Transformer
Tip
Ring
0.1μF
0.1μF
0.1μF
2k
2k
REF
N
2k
196
2k
REF
N
0.1μF
0.1μF
0.1μF
0.1μF
XMTDA
XMTLE
RCVCK
RCVG0
RCVD11 - RCVD0
VCXCK
VCXLE
VCXDA
MtH1210B
DV
DD
PV
DD
AV
DD
AV
DD
AV
DD
5V Analog
0.1μF
0.1μF
10μF
0.1μF
0.1μF 0.1μF
1 - 10μF
+
5V to 3.3V Digital
5 - 10
resistor for isolation
PCM56
LOG COM
ANA COM
CLK
LE
DATA
I
OUT
RF
SJ
V
OUT
4, 14, 15 NC
0.1μF and 2.2μF
caps on ±5V supplies
12.1k
0.1μF
18.2k
69.8k
5V
30.1k
MC33201D
2.2μF
0.1μF
VCXCN
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AFE1105E/1K | 功能描述:電信線路管理 IC HDSL/MDSL Analog Front End RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray |
| AFE1105E/1KG4 | 功能描述:電信線路管理 IC HDSL/MDSL Analog Front End RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray |
| AFE1105EG4 | 功能描述:電信線路管理 IC HDSL/MDSL Analog Front End RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray |
| AFE1115 | 制造商:BB 制造商全稱:BB 功能描述:HDSL/MDSL ANALOG FRONT END WITH VCXO |
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