SY02-HPLL Datasheet, PDF (2/6 Pages) Raltron Electronics Corporation – HIGH FREQUENCY CLOCK/SYNCHRONIZER - SY02-HPLL

SYNCHRONOUS EQUIPMENT
HIGH FREQUENCY CLOCK/SYNCHRONIZER - SY02-HPLL
REF A IN
REF B IN
SEL
FR
ALARM FRS
MUX,
FPD,
Counters
&
Logic
LOOP
FILTER
J-TAG PORT
OUT
VCXO
OUT
EN OUT
• DESCRIPTION
The SY02-HPLL is a High Frequency Phase Lock Loop has been designed as a module level subsystem for easy
incorporation into telecommunication equipment. The module generates the high frequency (up to 622.08MHz) output
from a low jitter VCXO or VCSO (SAW based oscillators). The output can be disabled externally by setting OUTEN pin
high. The SY02-HPLL can be locked to one of two reference inputs frequencies of 8 kHz. The module has fast locking
time and tolerates reference inputs with different duty cycles. The loop bandwidth is optimized according to used VCXO
and wanted output performance. The ALARM output signals monitor the status of the phase loop LOL (Loss of Lock)
and LOR (Loss of Reference). If the both references REFA and REFB are absent SY02-HPLL will automatically switch
to free run mode and FRS output will indicate it. The SMD package dimensions are 0.96x1.050 inch and power supply
is 3.3V.
- INPUT REFERENCE SELECTION
SEL
0
1
Reference
REF A
REF B
- OUTPUT PROGRAMMING
OUTEN
0
1
0
FR
OUTPUT
0
Locked to Reference
X
Output Disabled
1
Free-Run
- ALARM STATES
LOL LOR
0
0
1
0
0
1
ALARM
No alarm
1
1
RALTRON ELECTRONICS CORP. 10651 N.W.19^th St Florida 33172 U.S.A.
Tel: [phone] Fax: [phone] e-mail: [e-mail] Internet: http://www.raltron.com