PEF24902HV21XT Lantiq, PEF24902HV21XT Datasheet - Page 23

• Manufacturer Part Number: PEF24902HV21XT
• Manufacturer: Lantiq

Specifications of PEF24902HV21XT

• Number Of Line Interfaces: 1
• Lead Free Status / Rohs Status: Compliant

Access Network. PLLF tied to high or left open results in a higher resonance frequency
for accelerated synchronization. The PLLF pin has an internal pull-up resistor.
The PLL automatically determines whether the frequency at pin CLOCK is 8 kHz or
2048 kHz.
.
Table 4
Parameter
f
PLLF = low
f
PLLF = high
Damping factor
H
amplification
Synchronization time of the PLL
after power on and applying the
reference at pin CLOCK,
PLLF = low
Synchronization time of the PLL
after power on and applying the
reference at pin CLOCK,
PLLF = high
Output Jitter at CL15 without any
jitter in the CLOCK signal (peak-
to-peak); jitter frequency
> 800 Hz
Output Jitter at CL15 without any
jitter in the CLOCK signal (peak-
to-peak) jitter frequency
< 20 Hz
Initial accuracy after the loss of
the reference clock at CLOCK
Initial accuracy after power on
Start-up time of the oscillator
with the crystal suggested
below.
Data Sheet
r
r
max
resonance frequency,
resonance frequency,
maximum jitter
PLL Characteristics
Min.
1.7
7
0.7
0.9
-50
23
Limit Values
Typ.
2.0
8
0.9
1.45
0.5
Max.
2.3
9
1.2
2.2
8
1
2
80
0.5
50
1
Functional Description
Rev. 1, 2004-05-28
PEB 24902
PEF 24902
Unit
Hz
Hz
dB
sec
sec
ns
ns
ppm
ppm
ms