SC3035B-1 Datasheet, PDF (1/3 Pages) RF Monolithics, Inc – 800.0 MHz Differential Sine-Wave Clock

• Quartz SAW Frequency Stability
• Fundamental Fixed Frequency
• Very Low Jitter and Power Consumption
• Rugged, Miniature, Surface-Mount Case
• Low-Voltage Power Supply (3.3 VDC)
This digital clock is designed for use with high-speed timing systems. Fundamental-mode oscillation is made
possible by surface-acoustic-wave (SAW) technology. The design results in low jitter, compact size, and low
power consumption. Differential outputs provide a sine wave that is capable of driving 50 Ω loads.
Absolute Maximum Ratings
Rating
Power Supply Voltage (V_CC at Terminal 1)
Input Voltage (ENABLE at Terminal 8)
Value
0 to +4.0
0 to +4.0
Units
VDC
VDC
Case Temperature (Powered or Storage)
-40 to +85
°C
SC3035B-1
800.0 MHz
Differential
Sine-Wave
Clock
Electrical Characteristics
Characteristic
Output Frequency
Q and Q Output
Q and Q Period Jitter
Output (Disabled)
Absolute Frequency
Tolerance from 800.000 MHz
Voltage into 50Ω (VSWR ≤ 1.2)
Operating Load VSWR
Symmetry
Harmonic Spurious
Nonharmonic Spurious
No Noise on V_CC
200 mV_P-P from 1 MHz to 1/2 f_O on
Amplitude into 50 Ω
Output DC Resistance (between Q & Q)
ENABLE (Terminal 14)
Input HIGH Voltage
Input LOW Voltage
Input HIGH Current
Input LOW Current
Propagation Delay
DC Power Supply
Operating Voltage
Operating Current
Operating Ambient Temperature
Lid Symbolization (YY = Year, WW = Week)
Sym
f_O
Δf_O
V_O
V_IH
V_IL
I_IH
I_IL
t_PD
V_CC
I_CC
T_A
SMC-8 Case
Notes
1, 2
Minimum
799.800
Typical
Maximum
800.200
±250
0.60
.85
1, 3
2:1
3, 4, 5
49
51
3, 4, 6
-25
-20
-60
3, 4, 6, 7
15
30
3, 4, 7, 8
35
3, 9
75
3
50
V_CC-0.1
0.0
V_CC
V_CC+0.1
0.20
3, 9
3
5
-1
1
+3.13
+3.30
+3.47
1, 3
20
40
1, 3
0
+70
RFM SC3035B-1 800.00 MHz YYWW
Units
MHz
ppm
V_P-P
%
dBc
dBc
ps_P-P
ps_P-P
mV_P-P
KΩ
V
V
mA
mA
ms
VDC
mA
°C
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
NOTES:
1. Unless otherwise noted, all specifications include any combination of load
performance.
VSWR, VCC, and TA. In addition, Q and Q are terminated into 50 Ω loads 7. Applies to period jitter of Q and Q. Measurements are made with the
to ground. (See: Typical Test Circuit.)
Tektronix CSA803 signal analyzer with at least 1000 samples.
2. One or more of the following United States patents apply: 4,616,197;
8. Period jitter measured with a 200 mV_P-P sine wave swept from 1 MHz to
3.
4.
5.
6.
4,670,681; 4,760,352.
The design, manufacturing process, and specifications of this device are
subject to change without notice.
Only under the nominal conditions of 50 Ω load impedance with VSWR ≤
1.2 and nominal power supply voltage.
Symmetry is defined as the pulse width (in percent of total period)
measured at the 50% points of Q or Q. (See: Timing Definitions.)
Jitter and other spurious outputs induced by externally generated electrical
noise on V_CC or mechanical vibration are not included. Dedicated external
one-half of f_O at the V_CC power supply terminal.
9. The outputs are enabled when Terminal 8 is at logic HIGH. Propagation
delay is defined as the time from the 50% point on the rising edge of
ENABLE to the 90% point on the rising edge of the output amplitude or as
the fall time from the 50% point to the 10% point. (SEE: Timing
Definitions.)
10. The start up time is definded as the time from when power is applied to
terminals 1 and 8 (90% of 3.3V) until power out from Q and Qbar reaches
90% of Qout level.
voltage regulation and careful PCB layout are recommended for optimum
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©2008 by RF Monolithics, Inc.
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SC3035B-1 - 8/12/08