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參數(shù)資料
| 型號： | AFE1144 |
| 元件分類： | 圓形連接器 |
| 英文描述： | Circular Connector; No. of Contacts:15; Series:MS27467; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:15; Circular Contact Gender:Pin; Circular Shell Style:Straight Plug; Insert Arrangement:15-15 RoHS Compliant: No |
| 中文描述： | HDSL / MDSL模擬前端 |
| 文件頁數(shù)： | 9/11頁 |
| 文件大?。?/td> | 114K |
| 代理商： | AFE1144 |
9
AFE1144
For the transmit channel, the pulse shape and the power
spectral density scale directly with the clock rate. The power
spectral density shown in Curve 1 and the pulse template
shown in Curve 2 are measured at the output of the trans-
former. The transformer and the RC circuit on the output
provide some smoothing for the output transmission. At
lower bit rates, the amount of smoothing will be less.
RXHYB AND RXLINE INPUT
ANTI-ALIASING FILTERS
An external input anti-aliasing filter is needed on the hybrid
and line inputs as shown in the Basic Connection Diagram
above. The –3dB frequency of the input anti-aliasing filter
for the rxLINE and rxHYB differential inputs should be
approximately 1MHz for T1 and E1 symbol rates. 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 a 3dB
frequency of just over 1MHz. The 750
input resistors will
result in minimal voltage divider loss with the input imped-
ance of the AFE1144.
The antialiasing filters will give best performance with 3dB
frequency approximately equal to the bit rate. For instance,
a 3dB frequency of 320kHz may be used for a single line bit
rate of 320k bits per second.
FIGURE 6. Basic Connection Diagram.
REF
P
V
CM
REF
N
DV
DD
DV
DD
AV
DD
AFE1144
AV
DD
AV
DD
rxbaudCLK
rx48xCLK
Data Out
txbaudCLK
tx48xCLK
Data In
HDSL DSP
GNDA
GNDA
GNDA
txLINE+
txLINE–
rxHYB+
rxHYB–
rxLINE–
rxLINE+
0.01
μ
F
–
–
+
+
Compromise
Hybrid
Input Antialias Filter
fc
2 x Symbol Rate
0.01
μ
F
5V Analog
0.1
μ
F
0.1
μ
F
0.1
μ
F
0.1
μ
F
0.1
μ
F
1 - 10
μ
F
100pF
750
100pF
750
750
13
13
750
5V to 3.3V Digital
1:2 Transformer
Tip
Ring
0.1
μ
F
0.1
μ
F
0.1
μ
F
相關PDF資料 |
PDF描述 |
|---|---|
| AFE1144E | Circular Connector; No. of Contacts:15; Series:MS27467; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:15; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:15-15 RoHS Compliant: No |
| AFE1203 | Circular Connector; No. of Contacts:15; Series:MS27467; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:15; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:15-15 RoHS Compliant: No |
| AFE1203E | LJT 18C 18#20 PIN PLUG |
| AFE1205 | LJT 18C 18#20 PIN PLUG |
| AFE1205E | Circular Connector; No. of Contacts:18; Series:MS27467; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:15; Circular Contact Gender:Pin; Circular Shell Style:Straight Plug; Insert Arrangement:15-18 RoHS Compliant: No |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AFE1144E | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| AFE1144E/1K | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:xDSL Interface |
| AFE1200 | 制造商:ARTESYN 制造商全稱:Artesyn Technologies 功能描述:Single output |
| AFE1200-96S24NA | 制造商:ARTESYN 制造商全稱:Artesyn Technologies 功能描述:Single output |
| AFE1200-96S48NA | 制造商:Johnson Components 功能描述:48V Single |
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