PXB4221 Infineon Technologies AG, PXB4221 Datasheet - Page 237
PXB4221
Manufacturer Part Number
PXB4221
Description
IWE8 Interworking Element for 8 E1/T1 Lines
Manufacturer
Infineon Technologies AG
Datasheet
1.PXB4221.pdf
(290 pages)
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Part Number:
PXB4221EV3.2
Manufacturer:
INFIEON
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20 000
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Figure 48
8.3.6
The jitter transfer characteristics are much better than the requirements of ITU-T G.735
and I. 432.
The -3dB point of the transfer curve is proportional to the PLL-gain: 0.075 Hz for ASF=4,
0.3 Hz for ASF=16.
The jitter attenuator improves the already very good jitter transfer behavior. At -130 ppm
all jitter is removed.
Data Sheet
-10,0
-20,0
-30,0
-40,0
-50,0
-60,0
10,0
0,0
0,01
ACM Jitter Transfer in T1 Mode
ACM Jitter Transfer in E1 Mode with Jitter Attenuator
0,1
ACM Jitter Transfer in E1 Mode: ASF=4
Frequency [Hz]
1
237
10
PXB4219 / PXB4220 / PXB4221
100
1000
Application Hints
-50 ppm
0 ppm
+50 ppm
ITU G.735
and I.431
2002-05-06
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