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Murata Manufacturing Electronic Components Datasheet

OP4012B Datasheet

Optical Timing Clock

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RFM products are now
Murata products.
• Quartz SAW Stabilized Differential Output Technology
• Very Low Jitter Fundamental-Mode Operation at 644.53125 MHz
• Voltage Tunable for Phase Locked Loop Applications
• Timing Reference for 10G Optical Ethernet Communications Systems
• Complies with Directive 2002/95/EC (RoHS)
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The OP4012B is a voltage-controlled SAW clock (VCSC) designed for phase-locked loop (PLL) applications
in optical data communications systems. The differential outputs of the OP4012B are generated by high-Q,
fundamental mode quartz surface acoustic wave (SAW) technology. This technique provides very low output
jitter and phase noise, plus excellent immunity to power supply noise. The OP4012B differential outputs
feature ±1% symmetry, and can be DC-configured to drive a wide range of high-speed logic families. The
OP4012B is packaged in a hermetic metal-ceramic LCC.
Absolute Maximum Ratings
Rating
Value
Units
DC Suppy Voltage
0 to 5.5
Vdc
Tuning Voltage
0 to 5.5
Vdc
Case Temperature
-55 to 100
°C
OP4012B
644.53125 MHz
Optical
Timing Clock
SMC-08
Electrical Characteristics
Characteristic
Operating Frequency Absolute Frequency
Tuning Range
Tuning Voltage
Tuning Linearity
Tuning Sensitivity
Modulation Bandwidth
Q and Q Output
Voltage into 50 Ω (VSWR<1.2)
Operating Load VSWR
Symmetry
Harmonic Spurious
Nonharmonic Spurious
Phase Noise
@ 100 Hz offset
@ 1 kHz offset
@ 10 kHz offset
Noise Floor
Q and Q Jitter
RMS Jitter
No Noise on VCC
200 mVP-P Noise, from 1 MHz to ½ fO on VCC
Input Impedence (Tuning Port)
Output DC Resistance (between Q & Q)
DC Power Supply
Operating Voltage
Operating Current
Operating Case Temperature
Lid Symbolization (YY=Year, WW=Week)
Sym
fO
df/dv
VO
VCC
ICC
TC
Notes
1
2
1
1, 8
2
1,3
1,3
3, 4, 5
3, 4, 6
3, 4, 6, 7
3, 6
3, 6
3, 6
3, 6
3, 4, 6, 7
3, 4, 6, 7
3
1, 3
1, 3
1, 3
1, 3
Minimum
±100
0
100
125
0.60
Typical
644.53125
±5
265
49
1
50
3.13
-70
-100
-125
-150
2
12
12
3.3 or 5.0
-40
RFM OP4012B YYWW
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
COCOM CAUTION: Approval by the U.S. Department of Commerce is required prior to export of this device.
Maximum
3.3
260
1.1
2:1
51
-30
-60
5.25
70
+85
Units
MHz
ppm
V
%
ppm/V
kHz
VP-P
%
dBc
dBc
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
ps
psP-P
psP-P
KΩ
KΩ
Vdc
mA
°C
NOTES:
1. Unless otherwise noted, all specifications include the combined effects of load VSWR, VCC and TC.
2. Net tuning range after tuning out the effects of initial manufacturing tolerances, VSWR pushing/pulling, VCC, TC and aging.
3. The internal design, manufacturing processes, and specifications of this device are subject to change without notice.
4. Specified only for a balanced load with a VSWR < 1.2 ( 50 ohms each side), and a VCC = 3.0 Vdc.
5. Symmetry is defined as the width in (% of total period) measure at 50% of the peak-to-peak voltage of either output.
6. Jitter and other noise outputs due to power supply noise or mechanical vibration are not included in this specification except where noted.
7. Applies to period jitter of either differential output. Measured with a Tektronix CSA803 signal analyzer with at least 1000 sample.
8. One or more of the following United States patents apply: 4, 616,197; 4,670,681; 4,760,352.
©2010-2015 by Murata Electronics N.A., Inc.
OP4012B (R) 4/2/15
Page 1 of 7
www.murata.com


Murata Manufacturing Electronic Components Datasheet

OP4012B Datasheet

Optical Timing Clock

No Preview Available !

OP4012B Performance Parameters
The OP4012B has been developed to achieve high performance in five parameters critical to optical data communications applications:
Low Jitter and Phase Noise - low clock jitter (or low phase noise in the frequency domain) is critical to achieving low bit error rates in optical data
communications systems. The OP4012B provides very low free-running jitter and phase noise as shown in Figures 1 and 2. This makes the OP4012B an
excellent reference for the generation or regeneration of low-jitter clocks and data streams. The OP4012B achieves this performance over its full -40 to +85
°C operating temperature range using Murata's patented SAW oscillator architecture.
Single-Sideband Phase Noise
Figure 1
High Power Supply Noise Immunity - the OP4012B uses both differential active devices and differential SAW technology to minimize the effects of power
supply noise on jitter and phase noise, as shown in Figures 2 and 3. Optical data communications circuits must switch relatively high levels of current,
making power supply noise immunity an important clock requirement.
Controlled Tuning Characteristics - the OP4012B voltage tuning constant, KV, is bounded between 100 and 260 ppm/V under locked conditions for
reference signals with ±100 ppm or better stability over the OP4012B's full operating temperature and supply voltage range. This allows a PLL based on
the OP4012B to be designed with a well-controlled loop bandwidth and damping factor, avoiding problems such a jitter peaking, etc. The voltage tuning
characteristic of the OP4012B is monotonic from 0 to 3.3 V, supporting reliable acquisition of phase lock. Figure 4 shows typical OP4012B tuning
characteristics.
©2010-2015 by Murata Electronics N.A., Inc.
OP4012B (R) 4/2/15
Page 2 of 7
www.murata.com


Part Number OP4012B
Description Optical Timing Clock
Maker muRata
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