S1577 Series
3.3V PECL High-Frequency
Voltage-Controlled Crystal Oscillator (VCXO)
Actual Size = 7 x 5mm
Product Features
• Frequencies available up to 670 MHz
• Less than 3ps RMS jitter
• LVPECL compatible output
• Commercial and industrial operation
• ±20 ppM stability (or as specified)
• ±50 ppM absolute (net) pull range
• Pin compatible with standard 7 x 5mm packages
• Designed for standard reflow and washing techniques
• Pb-free & RoHS/Green compliant
Package Outline
2.00 max
.079
Pin Functions
Pad
Function
Control voltage
Output Enable/Disable
Ground
Q Output
Q Output
Supply voltage
1
2
3
4
#1
#2
#3
5.00±0.15
.197±.005
5
6
#6
#5
7.00±0.15
.276±.006
#4
Full Mechanical Drawings page 7.
Dimensions are in mm/inches.
Product Description
The S1577 is a voltage controlled crystal oscillator that
achieves superb temperature stability over a broad
range of operating conditions and frequencies. The
device is constructed with a hermetically sealed quartz
crystal resonator exhibiting a high-Q for exceptional
performance. The device, available on tape and reel,
is contained in a 7 x 5mm surface mount ceramic
package.
Common Frequencies
Contact SaRonix for additional frequencies (see SEL383 for 38 to 212 MHz)
19.4400
106.2500
139.2640
161.1328
312.5000
644.5312
54.0000
108.0000
155.5200
167.3316
622.0800
666.5143
77.7600
125.0000
156.2500
250.0000
625.0000
669.3266
Applications
The S1577 Series VCXO is an ideal component
in phase locked loop circuits that perform clock
smoothing, clock/data recovery, or frequency
translation and card synchronization functions, such as:
• SONET/SDH/DWDM/E4 timing control & line cards
• 1 & 10 Gigabit Ethernet and FibreChannel
• Satellite, microwave and cellular base stations
• Server & Storage platforms
Ordering Information
SaRonix
Model
S
1577 E A B - 155.5200 (T)
Packaging
blank = bulk packaged
(T) = Tape & Reel*
*full reel increments only (500pcs)
Stability Tolerance
AA = ±20ppm, 0 to +70°C
A = ±25ppm, 0 to +70°C
B = ±50 ppm, 0 to +70°C
E = ±50 ppm, -40 to +85°C
D = ±25 ppm, -40 to +85°C
Frequency (MHz)
Linearity
B = 10%
Pullability
(minimum APR)
A = ±50 ppm
Pericom Semiconductor Corporation • 1-800-435-2336 • http://www.pericom.com/saronix
1
All specifications are subject to change without notice.
DS 234 Rev C | 06/19/06
S1577 Series
3.3V PECL High-Frequency
Voltage-Controlled Crystal Oscillator (VCXO)
Electrical Performance
Parameter
Min.
Typ.
Max.
Units
Notes
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
Spurious or
Subharmonies
19.44
3.14
3.3
85
-40
670
3.46
110
±20 to ±50
+85
V
CC
- 1.620
V
CC
- 1.555
MHz
V
mA
ppM
°C
V
V
V
V
As specified
See Note 1 below
As specified
0 to +85˚C
-40 to +0˚C
0 to +85˚C
-40 to +0˚C
output requires termination
measured 50% of waveform
measured 20/80% of waveform
12kHz to 40MHz frequency band
20,000 adjacent periods
F
N
≤ 350 MHz
F
N
> 350 MHz
V
CC
- 1.025
V
CC
- 1.085
50Ω to V
CC
- 2V
45
55
850
3
10
-50
-40
%
ps
ps RMS (1-σ)
ps RMS (1-σ)
dBc
dBc
Notes:
1. As specified. Stability includes all combinations of operating temperature, load changes, rated input (supply) voltage changes, shock and vibra-
tion. Stability is inclusive of 5 years aging at 40°C average effective ambient temperature for ordering options A, B, D, E.
Frequency Modulation (Control Voltage) Function
Parameter
Min.
Typ.
Max.
Units
Notes
Absolute pull range (APR)
Control voltage range
Center control voltage
Monotonic linearity
Input impedance
Modulation bandwidth
±50
0.3
1.32
50
10
1.65
3.0
1.98
10
ppM
V
DC
V
%
kΩ
kHz
See #1 below
As rated
For RMT nominal frequency F
N
Positive transfer slope
Control voltage pin
-3dB
Notes:
1. APR is relative to the nominal output frequency F
N
(as specified); APR is inclusive (net) of frequency deviation due to stability.
Pericom Semiconductor Corporation • 1-800-435-2336 • http://www.pericom.com/saronix
2
All specifications are subject to change without notice.
DS 234 Rev C | 06/19/06
S1577 Series
3.3V PECL High-Frequency
Voltage-Controlled Crystal Oscillator (VCXO)
Output Enable / Disable Function
Parameter
Min.
Typ.
Max.
Units
Notes
Input voltage, Output Enable (pin 2)
Input voltage, Output Disable (pin2)
V
OH
V
OL
V
V
or Open
Q and Q outputs disable to
High Impedance
Typical Phase Noise
Typical Stability Characteristics
Pericom Semiconductor Corporation • 1-800-435-2336 • http://www.pericom.com/saronix
3
All specifications are subject to change without notice.
DS 234 Rev C | 06/19/06
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