Rev. 1.4 6/18 Copyright © 2018 by Silicon Laboratories Si532
Si532
DUAL FREQUENCY CRYSTAL OSCILLATOR (XO)
(10 MHZ TO 1.4 GHZ)
Features
Applications
Description
The Si532 dual frequency XO utilizes Silicon Laboratories’ advanced
DSPLL
®
circuitry to provide a low jitter clock at high frequencies. The Si532 is
available with any-frequency output frequency from 10 to 945 MHz and select
frequencies to 1400 MHz. Unlike a traditional XO where a different crystal is
required for each output frequency, the Si532 uses one fixed crystal
frequency to provide a wide range of output frequencies. This IC based
approach allows the crystal resonator to provide exceptional frequency
stability and reliability. In addition, DSPLL clock synthesis provides superior
supply noise rejection, simplifying the task of generating low jitter clocks in
noisy environments typically found in communication systems. The Si532 IC
based XO is factory configurable for a wide variety of user specifications
including frequency, supply voltage, output format, and temperature stability.
Specific configurations are factory programmed at time of shipment, thereby
eliminating long lead times associated with custom oscillators.
Functional Block Diagram
Available with any-frequency output
frequencies from 10 MHz to 945 MHz
and select frequencies to 1.4 GHz
Two selectable output frequencies
3rd generation DSPLL® with superior
jitter performance
3x better frequency stability than
SAW-based oscillators
Internal fixed crystal frequency
ensures high reliability and low
aging
Available CMOS, LVPECL,
LVDS, and CML outputs
3.3, 2.5, and 1.8 V supply options
Industry-standard 5 x 7 mm
package and pinout
Pb-free/RoHS-compliant
SONET/SDH
Networking
SD/HD video
Test and measurement
Clock and data recovery
FPGA/ASIC clock generation
Fixed
Frequency
XO
Any-frequency
10–1400 MHz
DSPLL®
Clock
Synthesis
VDD CLK+CLK–
FS GND
OE
Ordering Information:
See page 7.
Pin Assignments:
See page 6.
(Top View)
Si5602
1
2
3
6
5
4GND
OE
VDD
CLK+
CLK–
FS
1
2
3
6
5
4GND
OE
VDD
CLK
NC
FS
(LVDS/LVPECL/CML)
(CMOS)
REVISION D
Si532
2 Rev. 1.4
1. Electrical Specifications
Table 1. Recommended Operating Conditions
Parameter Symbol Test Condition Min Typ Max Units
Supply Voltage1VDD 3.3 V option 2.97 3.3 3.63 V
2.5 V option 2.25 2.5 2.75 V
1.8 V option 1.71 1.8 1.89 V
Supply Current IDD Output enabled
LVPECL
CML
LVDS
CMOS
111
99
90
81
121
108
98
88
mA
Tristate mode 60 75 mA
Output Enable (OE)
and Frequency Select (FS)2VIH 0.75 x VDD ——V
VIL ——0.5V
Operating Temperature Range TA–40 85 ºC
Notes:
1. Selectable parameter specified by part number. See Section 3. "Ordering Information" on page 7 for further details.
2. OE and FS pins include a 17 k pullup resistor to VDD. Pulling OE to ground causes outputs to tristate.
Table 2. CLK± Output Frequency Characteristics
Parameter Symbol Test Condition Min Typ Max Units
Nominal Frequency1,2 fOLVPECL/LVDS/CML 10 945 MHz
CMOS 10 160 MHz
Initial Accuracy fi
Measured at +25 °C at time of
shipping —±1.5ppm
Temperature Stability1,3 –7
–20
–50
+7
+20
+50
ppm
Aging
fa
Frequency drift over first year ±3 ppm
Frequency drift over 20 year life ±10 ppm
Total Stability Temp stability = ±7 ppm ±20 ppm
Temp stability = ±20 ppm ±31.5 ppm
Temp stability = ±50 ppm ±61.5 ppm
Notes:
1. See Section 3. "Ordering Information" on page 7 for further details.
2. Specified at time of order by part number. Also available in frequencies from 970 to 1134 MHz and 1213 to 1417 MHz.
3. Selectable parameter specified by part number.
4. Time from powerup or tristate mode to fO.
Si532
Rev. 1.4 3
Powerup Time4tOSC ——10ms
Settling Time After FS Change tFRQ ——10ms
Table 3. CLK± Output Levels and Symmetry
Parameter Symbol Test Condition Min Typ Max Units
LVPECL Output Option1VOmid-level VDD – 1.42 VDD – 1.25 V
VOD swing (diff) 1.1 1.9 VPP
VSE swing (single-ended) 0.55 0.95 VPP
LVDS Output Option2VOmid-level 1.125 1.20 1.275 V
VOD swing (diff) 0.5 0.7 0.9 VPP
CML Output Option2
VO
2.5/3.3 V option mid-level VDD – 1.30 V
1.8 V option mid-level VDD – 0.36 V
VOD
2.5/3.3 V option swing (diff) 1.10 1.50 1.90 VPP
1.8 V option swing (diff) 0.35 0.425 0.50 VPP
CMOS Output Option3VOH IOH =32mA 0.8 x VDD VDD V
VOL IOL =32mA 0.4
Rise/Fall time (20/80%) tR, tFLVPECL/LVDS/CML 350 ps
CMOS with CL=15pF 1 ns
Symmetry (duty cycle) SYM LVPECL: VDD – 1.3 V
(diff)
LVDS: 1.25 V (diff)
CMOS: VDD/2
45 55 %
Notes:
1. 50 to VDD – 2.0 V.
2. Rterm = 100 (differential).
3. CL = 15 pF
Table 2. CLK± Output Frequency Characteristics (Continued)
Parameter Symbol Test Condition Min Typ Max Units
Notes:
1. See Section 3. "Ordering Information" on page 7 for further details.
2. Specified at time of order by part number. Also available in frequencies from 970 to 1134 MHz and 1213 to 1417 MHz.
3. Selectable parameter specified by part number.
4. Time from powerup or tristate mode to fO.
Si532
4 Rev. 1.4
Table 4. CLK± Output Phase Jitter
Parameter Symbol Test Condition Min Typ Max Units
Phase Jitter (RMS)1
for FOUT > 500 MHz
J12 kHz to 20 MHz (OC-48) 0.25 0.40 ps
50 kHz to 80 MHz (OC-192) 0.26 0.37 ps
Phase Jitter (RMS)1
for FOUT of 125 to 500 MHz
J12 kHz to 20 MHz (OC-48) 0.36 0.50 ps
50 kHz to 80 MHz (OC-192)2 0.34 0.42 ps
Phase Jitter (RMS)1
for FOUT of 125 and 156.25 MHz Only J12 kHz to 20 MHz (Brickwall) 0.25 0.40 ps
Phase Jitter (RMS)
for FOUT of 10 to 160 MHz
CMOS Output Only
J12 kHz to 20 MHz (OC-48)2—0.62 ps
50 kHz to 20 MHz2—0.61 ps
Notes:
1. Refer to AN256 for further information.
2. Max offset frequencies: 80 MHz for FOUT > 250 MHz, 20 MHz for 50 MHz < FOUT <250 MHz,
2MHz for 10MHz < FOUT <50 MHz.
Table 5. CLK± Output Period Jitter
Parameter Symbol Test Condition Min Typ Max Units
Period Jitter* JPER RMS 2 ps
Peak-to-Peak 14 ps
*Note: Any output mode, including CMOS, LVPECL, LVDS, CML. N = 1000 cycles. Refer to AN279 for further information.
Table 6. CLK± Output Phase Noise (Typical)
Offset Frequency (f) 120.00 MHz
LVDS
156.25 MHz
LVPECL
622.08 MHz
LVPECL
Units
100 Hz
1kHz
10 kHz
100 kHz
1MHz
10 MHz
100 MHz
–112
–122
–132
–137
–144
–150
n/a
–105
–122
–128
–135
–144
–147
n/a
–97
–107
–116
–121
–134
–146
–148
dBc/Hz
Si532
Rev. 1.4 5
Table 7. Environmental Compliance
The Si532 meets the following qualification test requirements.
Parameter Conditions/Test Method
Mechanical Shock MIL-STD-883, Method 2002
Mechanical Vibration MIL-STD-883, Method 2007
Solderability MIL-STD-883, Method 2003
Gross & Fine Leak MIL-STD-883, Method 1014
Resistance to Solder Heat MIL-STD-883, Method 2036
Moisture Sensitivity Level J-STD_020, MSL1
Contact Pads Gold over Nickel
Table 8. Thermal Characteristics
(Typical values TA = 25 ºC, VDD =3.3V)
Parameter Symbol Test Condition Min Typ Max Unit
Thermal Resistance Junction to Ambient JA Still Air 84.6 °C/W
Thermal Resistance Junction to Case JC Still Air 38.8 °C/W
Ambient Temperature TA–40 85 °C
Junction Temperature TJ——125°C
Table 9. Absolute Maximum Ratings1
Parameter Symbol Rating Units
Maximum Operating Temperature TAMAX 85 ºC
Supply Voltage, 1.8 V Option VDD –0.5 to +1.9 V
Supply Voltage, 2.5/3.3 V Option VDD –0.5 to +3.8 V
Input Voltage (any input pin) VI–0.5 to VDD + 0.3 V
Storage Temperature TS–55 to +125 ºC
ESD Sensitivity (HBM, per JESD22-A114) ESD 2500 V
Soldering Temperature (Pb-free profile)2TPEAK 260 ºC
Soldering Temperature Time @ TPEAK (Pb-free profile)2tP20–40 seconds
Notes:
1. Stresses beyond those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional
operation or specification compliance is not implied at these conditions.
2. The device is compliant with JEDEC J-STD-020C. Refer to Si5xx Packaging FAQ available for download at
www.silabs.com/VCXO for further information, including soldering profiles.
Si532
6 Rev. 1.4
2. Pin Descriptions
Table 10. Pin Descriptions
Pin Symbol LVDS/LVPECL/CML Function CMOS Function
1FS*
Frequency Select
0 = First frequency selected
1 = Second frequency selected
Frequency Select
0 = First frequency selected
1 = Second frequency selected
2OE*
Output enable
0 = clock output disabled (outputs tristated)
1 = clock output enabled
Output enable
0 = clock output disabled (outputs tristated)
1 = clock output enabled
3 GND Electrical and Case Ground Electrical and Case Ground
4 CLK+ Oscillator Output Oscillator Output
5 CLK– Complementary Output No connection
6V
DD Power Supply Voltage Power Supply Voltage
*Note: FS and OE include a 17 k pullup resistor to VDD. See Section 3. “Ordering Information” for details on frequency value
ordering.
1
2
3
6
5
4GND
OE
VDD
CLK
NC
FS
(Top View)
1
2
3
6
5
4GND
OE
VDD
CLK+
CLK–
FS
LVDS/LVPECL/CML CMOS
Si532
Rev. 1.4 7
3. Ordering Information
The Si532 XO supports a variety of options including frequency, temperature stability, output format, and VDD.
Specific device configurations are programmed into the Si532 at time of shipment. Configurations can be specified
using the Part Number Configuration chart below. Silicon Laboratories provides a web browser-based part number
configuration utility to simplify this process. Refer to www.silabs.com/VCXOPartNumber to access this tool and for
further ordering instructions. The Si532 is supplied in an industry-standard, RoHS-compliant, 6-pad, 5 x 7 mm
package.
Figure 1. Part Number Convention
Example Part Number: 532AB000108DGR is a 5 x 7 mm Dual XO in a 6 pad package. Since the six digit code (000108) is > 000100,
f0 is 644.53125 MHz (lower frequency) and f1 is 693.48299 (higher frequency), with a 3.3 V supply, LVPECL output, and Output
Enable active high polarity. Temperature stability is specified as ±20 ppm. The part is specified for a –40 to +85 ambient
temperature range operation and is shipped in tape and reel format.
Operating Temp Range (°C)
G –40 to +85 °C
Device Revision Letter
2nd Option Code
Code Temperature Stability (ppm, max, ±) Total Stablility (ppm, max, ±)
A 50 61 .5
B 20 31 .5
C 7 20
532 Dual XO
Product Family
6-digit Frequency Designator Code
Two unique frequencies can be specified within the following bands of
frequencies: 10 to 945 MHz, 970 to 1134 MHz, and 1213 to 1417 MHz. A
six digit code will be assigned for the specified combination of frequencies.
Codes > 000100 refer to dual XOs programmed with the lower frequency
value selected when FS = 0, and the higher value when FS = 1. Six digit
codes < 000100 refer to dual XOs programmed with the higher frequency
value selected when FS = 0, and the lower value when FS = 1.
532 X X XXXXXX D G R
1st Option Code
VDD Output Format Output Enable Polarity
A 3.3 LVPECL High
B 3.3 LVDS High
C 3.3 CMOS High
D3.3CML High
E 2.5 LVPECL High
F 2.5 LVDS High
G 2.5 CMOS High
H2.5CML High
J 1.8 CMOS High
K1.8CML High
M 3.3 LVPECL Low
N 3.3 LVDS Low
P 3.3 CMOS Low
Q 3.3 CML Low
R 2.5 LVPECL Low
S 2.5 LVDS Low
T 2.5 CMOS Low
U 2.5 CML Low
V 1.8 CMOS Low
W 1.8 CML Low
Note:
CMOS available to 160 MHz.
R = Tape & Reel
Blank = Coil Tape
Si532
8 Rev. 1.4
4. Outline Diagram and Suggested Pad Layout
Figure 2 illustrates the package details for the Si532. Table 11 lists the values for the dimensions shown in the
illustration.
Figure 2. Si532 Outline Diagram
Table 11. Package Diagram Dimensions (mm)
Dimension Min Nom Max
A 1.50 1.65 1.80
b 1.30 1.40 1.50
c 0.50 0.60 0.70
D 5.00 BSC
D1 4.30 4.40 4.50
e 2.54 BSC
E 7.00 BSC
E1 6.10 6.20 6.30
H 0.55 0.65 0.75
L 1.17 1.27 1.37
p 1.80 2.60
R 0.70 REF
aaa 0.15
bbb 0.15
ccc 0.10
ddd 0.10
eee 0.05
Si532
Rev. 1.4 9
5. Si532 Mark Specification
Figure 3 illustrates the mark specification for the Si532. Table 12 lists the line information.
Figure 3. Mark Specification
Table 12. Si53x Top Mark Description
Line Position Description
1 1–10 “SiLabs 532”
2 1–10 Si532: Option1 + Option2 + ConfigNum(6) + Temp
3 Trace Code
Position 1 Pin 1 orientation mark (dot)
Position 2 Product Revision (D)
Position 3–6 Tiny Trace Code (4 alphanumeric characters per assembly release instructions)
Position 7 Year (least significant year digit), to be assigned by assembly site (ex: 2007 = 7)
Position 8–9 Calendar Work Week number (1–53), to be assigned by assembly site
Position 10 “+” to indicate Pb-Free and RoHS-compliant
Si532
10 Rev. 1.4
6. 6-Pin PCB Land Pattern
Figure 4 illustrates the 6-pin PCB land pattern for the Si532. Table 13 lists the values for the dimensions shown in
the illustration.
Figure 4. Si532 PCB Land Pattern
Table 13. PCB Land Pattern Dimensions (mm)
Dimension Min Max
D2 5.08 REF
e 2.54 BSC
E2 4.15 REF
GD 0.84
GE 2.00
VD 8.20 REF
VE 7.30 REF
X1.70 TYP
Y2.15 REF
ZD 6.78
ZE 6.30
Notes:
1. Dimensioning and tolerancing per the ANSI Y14.5M-1994 specification.
2. Land pattern design based on IPC-7351 guidelines.
3. All dimensions shown are at maximum material condition (MMC).
4. Controlling dimension is in millimeters (mm).
Si532
Rev. 1.4 11
DOCUMENT CHANGE LIST
Revision 1.0 to Revision 1.1
Updated Table 1, “Recommended Operating
Conditions,” on page 2.
Device maintains stable operation over –40 to +85 ºC
operating temperature range.
Supply current specifications updated for revision D.
Updated Table 2, “CLK± Output Frequency
Characteristics,” on page 2.
Added specification for ±20 ppm lifetime stability
(±7 ppm temperature stability) XO.
Updated Table 3, “CLK± Output Levels and
Symmetry,” on page 3.
Updated LVDS differential peak-peak swing
specifications.
Updated Table 4, “CLK± Output Phase Jitter,” on
page 4.
Updated Table 5, “CLK± Output Period Jitter,” on
page 4.
Revised period jitter specifications.
Updated Table 9, “Absolute Maximum Ratings1,” on
page 5 to reflect the soldering temperature time at
260 ºC is 20–40 sec per JEDEC J-STD-020C.
Updated 3. "Ordering Information" on page 7.
Changed ordering instructions to revision D.
Added 5. "Si532 Mark Specification" on page 9.
Revision 1.1 to Revision 1.2
Updated 2.5 V/3.3 V and 1.8 V CML output level
specifications for Table 3 on page 3.
Added footnotes clarifying max offset frequency test
conditions for Table 4 on page 4.
Removed the words "Differential Modes:
LVPECL/LVDS/CML" in the footnote referring to
AN256 in Table 4 on page 4.
Added CMOS phase jitter specs to Table 4 on
page 4.
Updated Table 7 on page 5 to include the "Moisture
Sensitivity Level" and "Contact Pads" rows.
Revised Figure 2 on page 8 to reflect current
package outline diagram.
Updated Figure 3 and Table 12 on page 9 to reflect
specific marking information. Previously, Figure 3
was generic.
Revision 1.2 to Revision 1.3
Added Table 8, “Thermal Characteristics,” on
page 5.
Revision 1.3 to Revision 1.31
May 2, 2016
Updated Table 4 to include 125 MHz and
156.25 MHz jitter measurements.
Revision 1.31 to Revision 1.4
June, 2018
Changed “Trays” to “Coil Tape” in section
3. “Ordering Information”.
ClockBuilder Pro
One-click access to Timing tools,
documentation, software, source
code libraries & more. Available for
Windows and iOS (CBGo only).
www.silabs.com/CBPro
Timing Portfolio
www.silabs.com/timing SW/HW
www.silabs.com/CBPro Quality
www.silabs.com/quality Support and Community
community.silabs.com
http://www.silabs.com
Silicon Laboratories Inc.
400 West Cesar Chavez
Austin, TX 78701
USA
Disclaimer
Silicon Labs intends to provide customers with the latest, accurate, and in-depth documentation of all peripherals and modules available for system and software implementers using or
intending to use the Silicon Labs products. Characterization data, available modules and peripherals, memory sizes and memory addresses refer to each specific device, and "Typical"
parameters provided can and do vary in different applications. Application examples described herein are for illustrative purposes only. Silicon Labs reserves the right to make changes without
further notice to the product information, specifications, and descriptions herein, and does not give warranties as to the accuracy or completeness of the included information. Without prior
notification, Silicon Labs may update product firmware during the manufacturing process for security or reliability reasons. Such changes will not alter the specifications or the performance
of the product. Silicon Labs shall have no liability for the consequences of use of the information supplied in this document. This document does not imply or expressly grant any license to
design or fabricate any integrated circuits. The products are not designed or authorized to be used within any FDA Class III devices, applications for which FDA premarket approval is required
or Life Support Systems without the specific written consent of Silicon Labs. A "Life Support System" is any product or system intended to support or sustain life and/or health, which, if it fails,
can be reasonably expected to result in significant personal injury or death. Silicon Labs products are not designed or authorized for military applications. Silicon Labs products shall under no
circumstances be used in weapons of mass destruction including (but not limited to) nuclear, biological or chemical weapons, or missiles capable of delivering such weapons. Silicon Labs
disclaims all express and implied warranties and shall not be responsible or liable for any injuries or damages related to use of a Silicon Labs product in such unauthorized applications.
Trademark Information
Silicon Laboratories Inc.® , Silicon Laboratories®, Silicon Labs®, SiLabs® and the Silicon Labs logo®, Bluegiga®, Bluegiga Logo®, ClockBuilder®, CMEMS®, DSPLL®, EFM®,
EFM32®, EFR, Ember®, Energy Micro, Energy Micro logo and combinations thereof, "the world’s most energy friendly microcontrollers", Ember®, EZLink®, EZRadio®, EZRadioPRO®,
Gecko®, Gecko OS, Gecko OS Studio, ISOmodem®, Precision32®, ProSLIC®, Simplicity Studio®, SiPHY®, Telegesis, the Telegesis Logo®, USBXpress® , Zentri, the Zentri logo and Zentri
DMS, Z-Wave®, and others are trademarks or registered trademarks of Silicon Labs. ARM, CORTEX, Cortex-M3 and THUMB are trademarks or registered trademarks of ARM Holdings.
Keil is a registered trademark of ARM Limited. Wi-Fi is a registered trademark of the Wi-Fi Alliance. All other products or brand names mentioned herein are trademarks of their respective
holders.