ACS8944 Semtech Corporation, ACS8944 Datasheet - Page 15

• Manufacturer Part Number: ACS8944
• Description: Jitter Attenuating, Multiplying Phase Locked Loop for Oc-12/stm-4
• Manufacturer: Semtech Corporation

Jitter Performance
Table 16 Output Jitter Generation: ACS8944 Stand-alone @155.52 MHz Input/155.52 MHz Output
Notes: (i) Measured on the ACS8944 Evaluation Board using output clock OUT1, with a 0 dBm reference clock from an ESG E4400B signal
Revision 3/November 2006 © Semtech Corp.
ADVANCED COMMUNICATIONS
G.813
Option 1
and ETSI
EN 300 462 -
7 - 1
ETSI
EN 300 462 -
7 - 1
G.813
Option 2
GR-253-
CORE
Specification
[1]
[1]
[8]
(iii) PLL Closed Loop bandwidth set to 2 KHz with a damping factor of 1.2.
(iv) All measurement results are derived from the phase noise plots using integration ranges defined by the telecommunication
(ii) “*” Derived values using the normal Gaussian crest value ratio of 10.
[4]
[4]
generator AC coupled to CLK1. VDD = 3.0 V to 3.465 V, T
standards' specifications
,
STM-1 (optical)
155 MHz
STM-4 622 MHz 250 kHz to
STM-16 2.5 GHz 1 MHz to
STM-1
(electrical)
155 MHz
STM-1 155 MHz 12 kHz to
STM-4 622 MHz 12 kHz to 5 MHz 0.1 UI p-p = 161 ps
STM-16 2.5 GHz 12 kHz to
OC-3/STS-3
155 MHz
OC-12/STS-12
622 MHz
OC-48/STS-48
2.5 GHz
Frequency
Interface
Test Definition
65 kHz to
1.3 MHz
500 Hz to
1.3 MHz
5 MHz
1 kHz to 5 MHz
20 MHz
5 kHz to 20 MHz 0.5 UI p-p = 201 ps
65 kHz to
1.3 MHz
1.3 MHz
20 MHz
12 kHz to
1.3 MHz
12 kHz to 5 MHz 0.1 UI p-p = 161 ps
5 kHz to 20 MHz 1.5 UI p-p = 600 ps
1 MHz to
20 MHz
Filter Spec
(iv)
0.1 UI p-p = 643 ps
0.5 UI p-p = 3215 ps
0.1 UI p-p = 161 ps
0.5 UI p-p = 804 ps
0.1 UI p-p = 40 ps
0.075 UI p-p = 482 ps
0.1 UI p-p = 643 ps
0.1 UI p-p = 40 ps
0.1 UI p-p = 643 ps
0.01 UI rms = 64.3 ps
0.01 UI p-p = 16.1 ps
0.15 UI p-p = 60 ps
Spec Limit
FINAL
-
-
-
-
-
-
-
-
-
-
-
Page 15
A
-40°C to +85°C.
*
*
*
*
*
*
*
*
*
*
*
*
*
*
5.1
0.5
110.4
11.0
3.2
0.3
82.4
8.2
3.7
0.4
33.7
3.4
5.1
0.5
18.1
1.8
18.2
1.8
18.4
1.8
18.1
1.8
18.2
1.8
33.7
3.4
3.7
0.4
Typical
ACS8944 JAM PLL
Measured Results
12.5
1.2
302.8
30.3
5.3
0.5
213.0
21.3
6.3
0.6
90.3
9.0
12.5
1.2
52.4
5.2
47.9
4.8
48.4
4.8
52.4
47.9
4.8
90.3
9.0
6.3
0.6
5.2
Max
DATASHEET
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ps p-p
ps rms
ps p-p
ps rms
ps p-p
ps rms
ps p-p
ps rms
ps p-p
ps rms
ps p-p
ps rms
ps p-p
ps rms
ps p-p
ps rms
ps p-p
ps rms
ps p-p
ps rms
ps p-p
ps rms
ps p-p
ps rms
ps p-p
ps rms
ps p-p
ps rms
Units