參數(shù)資料
型號(hào): PEB 22713
廠商: SIEMENS AG
英文描述: ADSL Analog Front Ends(非對(duì)稱(chēng)數(shù)字用戶(hù)線(ADSL)模擬前端)
中文描述: ADSL模擬前端(非對(duì)稱(chēng)數(shù)字用戶(hù)線環(huán)路(ADSL)模擬前端)
文件頁(yè)數(shù): 1/2頁(yè)
文件大?。?/td> 88K
代理商: PEB 22713
geneous as well as bidged tap
lines.
s
http://www.siemens.de/semiconductor/communication
Features
I
Optimized versions for remote
and central office side
I
ADSL over ISDN support
I
High resolution (13+ bit) AD and
DA converters
I
Integrated balancing filter
- Analog echo cancellation
- Optimum adaptivity to loop
conditions
I
Very low noise and distortion in
whole receive and transmit path
I
Power down option for each
block of the receive and transmit
path
I
Automatic gain control in the
receive path
I
Tunable anti-imaging and
anti-aliasing filters
I
5 pin digital data interface
I
4 pin control interface to data
pump
Specific Features:
Remote Transmission Unit IC
PEB 22713
I
Integrated Digital Controlled
Crystal Oscillator (DCXO) for
modem timing recovery
(0.05 ppm resolution)
I
Power dissipation < 800 mW
Central Office Transmission Unit IC
PEB 22711
I
26 MHz crystal oscillator
(master clock)
I
Power dissipation < 700 mW
I
Programmable transmit gain
The analog front ends PEB 22711
and PEB 22713 are part of Sie-
mens’ POTSWIRE
TM
ADSL
chipset. They are optimized for
use with the digital data pump
PEB 22712 but can also be used
in combination with other data
pumps.
Due to the asymmetry of ADSL
optimized analog front ends are
provided for central office (PEB
22711) and remote terminal appli-
cation (PEB 22713) . They are de-
signed to meet the high perfor-
mance requirements of ADSL
T1.413 Issue 2 modems while
keeping power dissipation at a
minimum. In order to support var-
ious power management con-
cepts each block can be set into
power down state independently.
The integrated filters can be pro-
grammed for ADSL over POTS or
ADSL over ISDN operation.
Due to an integrated analog echo
canceller the front ends provide
excellent performance on homo-
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