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參數(shù)資料
| 型號： | MTC20154 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | INTEGRATED ADSL CMOS ANALOG FRONT-END CIRCUIT |
| 中文描述： | 集成ADSL CMOS模擬前端電路 |
| 文件頁數(shù)： | 10/21頁 |
| 文件大?。?/td> | 533K |
| 代理商： | MTC20154 |
MTC20154
10/21
ATU-R Side Block Diagram
The ATU-R side block diagram is equal to the ATU-C side block diagram with the following differences:
- The transformer ratio is 1:1
- Termination resistors are 50
for 100
lines.
An LP filter may be used on the TX path to reduce DMT sidelobes and out-of-band noise influence on the
receiver.
On the RX path, a HP filter must be used in order to reduce the echo signal level and to avoid saturation
of the input stage of the receiver.
The POTS filter is used in both directions to reduce crosstalk between ADSL signals and POTS speech
and signalling.
Figure 5. ATU-R AFE Schematics (For detailed schematics see MTB-20141-EBR reference design.
)
Gtx
line driver
Pots Filter
LP
Pots Filter
POTS
H
P
F
TXP
TXN
L
Z
2
RXT1
RXT2
R
5
I
M
2
2
5
R
P.D.
-g..+6db
0.. 31db
LP 138 KHz
LP 1.1 MHz
VCODAC
VCXO
35.328 MHz or 17.664 MHz
VCXO
LNA
D/A
convertor
D/A
convertor
12bits
8.832 MS/s
4.416 MS/s
4
RESETN
LTNT= 0
CTRLIN
4
13bits
8.832 MS/s
4.416 MS/s
Master clock 35.328 MHz
Nibbles 17.664 MHz
Word 8.832/4.416 MHz
L
P
F
RXN [0:1]
RXP [0:1]
V
MTC-20154
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MTC20154-TQ-C2 | 制造商:STMicroelectronics 功能描述: |
| mtc20154-tq-c2tr | 制造商:STMicroelectronics 功能描述: |
| MTC20154-TQ-I1 | 制造商:STMicroelectronics 功能描述:INTEGRATED ADSL CMOS ANLG FRONT-END CIRCUIT 64TQFP - Tape and Reel |
| MTC20154TQI1A | 功能描述:電信集成電路 ASDL Analg Front End RoHS:否 制造商:STMicroelectronics 類型:Telecom IC - Various 工作電源電壓:4.75 V to 5.25 V 電源電流: 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFP-100 封裝:Tray |
| MTC20154-TQ-I1A | 制造商:STMicroelectronics 功能描述:ADSL DMT/ATM IND T - Tape and Reel |
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