
2
DS 258 Rev A | 07/29/04
S1569J Series
3.3V PECL Ultra Low Jitter with J-Leads
Voltage Controlled Crystal Oscillator (VCXO)
Pericom Semiconductor Corporation 1-800-435-2336 http://www.pericom.com/saronix
All specifications are subject to change without notice.
Frequency Modulation Function
Parameter
Absolute pull range (APR)
Control voltage range
Center control voltage
Monotonic linearity
Input impedance
Modulation bandwidth
Min.
Typ.
Max.
Units
Notes
See #1 below
As rated
For RMT center frequency
Positive transfer slope
Control voltage pin
-3dB
±50
0.3
1.32
ppM
V
DC
V
%
kΩ
kHz
3.0
1.98
10
1.65
50
10
Notes:
1. APR is relative to the nominal output frequency F
N
(as specified); APR is inclusive (net) of frequency deviation due to stability.
For example, a unit with ±50 ppM min APR and ±50 ppM max stability exhibits ±100 ppM minimum relative pull with respect to the actual
operating frequency under any given set of rated operating conditions.
Electrical Performance
Parameter
Output frequency (F
N
)
Supply voltage
Supply current
Frequency stability
Operating temperature
Output logic 0, V
OL
Output logic 0, V
OL
Output logic 1, V
OH
Output logic 1, V
OH
Output load
Duty cycle
Rise and fall time
Jitter, phase
Jitter, accumulated
Min.
65
2.97
Typ.
Max.
168
3.63
70
±50
+85
Units
MHz
V
mA
ppM
°C
V
V
V
V
Notes
As specified
3.3
±20
-40
See Note 1 below
As specified
0 to +70C
-40 to +85C
0 to +70C
-40 to +85C
output requires termination
measured 50% of waveform
measured 20/80% of waveform
12kHz to 40MHz frequency band
20,000 adjacent periods
V
CC
- 1.645
V
CC
- 1.590
V
CC
- 0.995
V
CC
- 1.045
50 to V
CC
- 2V
45
55
0.55
1
3
%
ns
0.18
ps RMS (1-σ)
ps RMS (1-σ)
ps
pk-pk
Jitter, total
20
100,000 random periods
Notes:
1. As specified. Stability includes all combinations of operating temperature, load changes, rated input (supply) voltage changes, aging (5 years at
40°C average effective ambient temperature), shock and vibration.