SiT3702
LVPECL / LVDS / CML / HCSL
Voltage Controlled MEMS Oscillator
Features
• Extremely low RMS phase jitter (random)
• <1 ps (typical)
• 4 Pull range options
• ±30, ±60, ±120, ±240 PPM
• Wide frequency range
• 1 MHz to 220 MHz
• 220 MHz to 800 MHz (contact SiTime)
• High frequency stability
• ±10 PPM, ±15 PPM, ±20 PPM
• ±25 PPM, ±50 PPM
• Operating voltage
• 1.8, 2.5 or 3.3 V
• Operating temperature range
• Industrial, -40 to 85 °C
• Extended Commercial, -20 to 70 °C
• Commercial, 0 to 70 °C
• Small footprint
• 5.0 x 3.2 x 0.75 mm
• 7.0 x 5.0 x 0.9 mm
• Pb-free and ROHs compliant
Benefits
• Ultra fast lead time: 2 to 3 weeks
• Linear pull range
• Eliminates crystal qualification time
• 50% + board saving space
• More cost effective than quartz oscillators, quartz crystals
and clock ICs.
• Completely quartz-free
Applications
• 10G Fibre Channel
• 10GbE LAN / WAN
• Networking
Block Diagram
VDD
OUT- OUT+
Pinout
VC
1
6
VDD
OE
2
5
OUT-
MEMS
Resonator
High Performance
Phase Lock Loop
GND
3
4
OUT+
VC
OE
GND
SiTime Corporation
Rev. 1.00
990 Almanor Avenue, Suite 200
Sunnyvale, CA 94085
(408) 328-4400
www.sitime.com
Revised September 17, 2009
SiT3702
PRELIMINARY
LVPECL / LVDS / CML / HCSL
Voltage Controlled MEMS Oscillator
Pin Description
Pin No.
1
2
Name
VC
OE
Input
Input
Input control voltage, 0 to 1.6 V
Output Enable:
When High or Open : OUT+ and OUT- = active
When Low : OUT+ and OUT- = High Impedance state
VDD power supply ground. Connect to Ground
800 MHz programmable clock output.
800 MHz programmable clock output.
Power supply voltage
Pin Description
3
4
5
6
GND
OUT+
OUT-
VDD
Power
Output
Output
Power
Absolute Maximum Ratings
Attempted operation outside the absolute maximum ratings of the part may cause permanent damage to the part. Actual
performance of the IC is only guaranteed within the operational specifications, not at absolute maximum ratings.
Ab
solute Maximum Table
Parameter
Storage Temperature
VDD
Vin
Theta JA (with copper plane on VDD and GND) 5.0 x 3.2 package
7.0 x 5.0 package when center pad is soldered down
7.0 x 5.0 package when center pad is not soldered down
Theta JC (with PCB traces of 0.010 inch to all pins) 5.0 x 3.2 package
7.0 x 5.0 package when center pad is soldered down
7.0 x 5.0 package when center pad is not soldered down
Soldering Temperature (follow standard Pb free soldering guidelines)
Number of Program Writes
Program Retention over -40 to 125°C, Process, VDD (0 to 3.6V)
Human Body Model (JESD22-A114)
Charged Device Model (JESD22-C101)
Machine Model (JESD22-A115)
Min.
-65
-0.5
GND - 0.5
–
–
–
–
–
–
–
–
–
2000
750
200
Max.
150
+4.00
VDD + 0.5
68
38
90
45
35
48
260
1
1,000+
–
–
–
Unit
°C
V
V
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
°C
NA
years
–
–
–
Environmental Compliance
Parameter
Mechanical Shock
Mechanical Vibration
Temperature Cycle
Solderability
Moisture Sensibility Level
Condition/Test Method
MIL-STD-883F, Method 2002, 50 KG Shock
MIL-STD-883F, Method 2007, 70 G Vibration
MIL-STD-883F, Method 1010-65-150°C (1000 cycle)
MIL-STD-883F, Method 2003
MSL1
Page 2 of 13
SiT3702
DC Electrical Specifications
PRELIMINARY
LVPECL / LVDS / CML / HCSL
Voltage Controlled MEMS Oscillator
LVCMOS input, OE or ST pin, 3.3V ±10% or 2.5V ±10% or 1.8V ±5%, -40 to 85°C
Symbol
V
IH
V
IL
I
IH
I
IL
Parameter
Input High Voltage
Input Low Voltage
Input High Current
Input Low Current
OE or ST pin
OE or ST pin
Condition
Min.
70
–
–
-10
Typ.
–
–
–
–
Max.
–
30
10
–
Unit
%Vdd
%Vdd
µA
µA
LVPECL, 3.3V ±10% or 2.5V ±10%, -40 to 85°C
Symbol
V
DD
I
DD
V
OH
V
OL
V
swing
Parameter
Supply Voltage
Supply Current
Output High Voltage
Output Low Voltage
Pk-Pk Output Voltage Swing
V
DD
= 3.3, Excluding Load Termination Current
V
DD
= 3.3, Excluding Load Termination Current
50 Ohm termination to V
DD
- 2.0V
See Figure 2, 3.
Condition
Min.
2.97
2.25
–
–
V
DD
-1.1
V
DD
-2.0
600
Typ.
3.3
2.5
75
75
–
–
800
Max.
3.63
2.75
84
84
V
DD
-0.7
V
DD
-1.4
1000
Unit
V
V
mA
mA
V
V
mV
HCSL, 3.3V ±10% or 2.5V ±10%, -40 to 85°C
Symbol
V
DD
I
DD
V
OH
V
OL
V
swing
Parameter
Supply Voltage
Supply Current
Output High Voltage
Output Low Voltage
Pk-Pk Output Voltage Swing
V
DD
= 3.3, Excluding Load Termination Current
V
DD
= 3.3, Excluding Load Termination Current
50 Ohm termination to GND
See Figure 4.
Condition
Min.
2.97
2.25
–
–
0.6
0.0
600
Typ.
3.3
2.5
73
73
0.75
–
750
Max.
3.63
2.75
80
80
0.95
0.50
950
Unit
V
V
mA
mA
V
V
mV
LVDS, 3.3V ±10% or 2.5V ±10%, -40 to 85°C
Symbol
V
DD
I
DD
V
OD1
Parameter
Supply Voltage
Supply Current
Differential Output Voltage
V
OD
Magnitude Change
Offset Voltage
V
OS
Magnitude Change
Differential Output Voltage
V
OD
Magnitude Change
Offset Voltage
V
OS
Magnitude Change
Differential Output Voltage
V
OD
Magnitude Change
Offset Voltage
V
OS
Magnitude Change
Swing Mode = High
Double load termination.
See Figure 6.
Swing Mode = High
Single load termination.
See Figure 5.
V
DD
= 3.3, Excluding Load Termination Current
V
DD
= 3.3, Excluding Load Termination Current
Swing Mode = Normal
Single load termination.
See Figure 5.
Condition
Min.
2.97
2.25
–
–
250
–
–
–
500
–
–
–
250
–
–
–
Typ.
3.3
2.5
75
70
350
–
1.2
–
700
–
1.2
–
350
–
1.2
–
Max.
3.63
2.75
85
77
450
50
–
50
900
50
–
50
450
50
–
50
Unit
V
V
mA
mA
mV
mV
V
mV
mV
mV
V
mV
mV
mV
V
mV
Δ
V
OD1
Δ
V
OS1
Δ
V
OD2
Δ
V
OS2
Δ
V
OD3
Δ
V
OS3
V
OS3
V
OD3
V
OS2
V
OD2
V
OS1
Page 3 of 13
SiT3702
PRELIMINARY
LVPECL / LVDS / CML / HCSL
Voltage Controlled MEMS Oscillator
CML, 3.3V ±10% or 2.5V ±10% or 1.8V ±5%, -40 to 85°C
Symbol
V
DD
Parameter
Supply Voltage
Condition
Min.
2.97
2.25
1.71
I
DD
Supply Current
V
DD
= 3.3V
V
DD
= 2.5V
V
DD
= 1.8V
V
OH1
V
OL1
V
swing1
V
OH2
V
OL2
V
swing2
V
OH3
V
OL3
V
swing3
Output High Voltage
Output Low Voltage
Pk-Pk Output Voltage Swing
Output High Voltage
Output Low Voltage
Pk-Pk Output Voltage Swing
Output High Voltage
Output Low Voltage
Pk-Pk Output Voltage Swing
Swing Mode = Normal
Single Load Termination
See Figure 7.
Swing Mode = High
Single Load Termination
See Figure 7.
Swing Mode = High
Double Load Termination
See Figure 8.
Excluding Load
Termination
Current
–
–
–
V
DD
-0.1
300
V
DD
-0.1
V
DD
-1.1
Typ.
3.3
2.5
1.8
48
48
48
–
425
–
V
DD
-0.85
Max.
3.63
2.75
1.89
51
51
51
V
DD
V
DD
-0.3
Unit
V
V
V
mA
mA
mA
V
V
mV
V
V
mV
V
V
mV
V
DD
-0.55 V
DD
-0.425
550
V
DD
V
DD
-0.6
600
V
DD
-0.1
300
850
–
425
1100
V
DD
V
DD
-0.3
V
DD
-0.55 V
DD
-0.425
550
AC Electrical Specifications
LVPECL, 3.3V ±10% ,-40 to 85°C
Symbol
F
out
F
sta
Parameter
Output Frequency
Frequency Stability
Inclusive of initial tolerance,
operating temp., rated power
supply voltage change, load
change
0 to 70°C
-20 to 70°C
-40 to 85°C
Condition
Min.
1.0
-10
-15
-20
-25
-50
F
age
DC
t
R
/t
F
PH
J
Aging
Duty Cycle
Output Rise/Fall Time
RMS Phase Jitter (random)
20% to 80%
F
out
= 106.25 MHz @ BW: 637 kHz to10 MHz
F
out
= 156.25 MHz @ BW: 1.875 to 20 MHz
F
out
= 200 MHz @ BW: 1 to 20 MHz
P
J
RMS Period Jitter
F
out
= 106.25 MHz
F
out
= 156.25 MHz
F
out
= 200 MHz
First year @ 25°C
–
45
100
–
–
–
–
–
–
–
–
150
1.6
0.5
0.7
1.8
1.3
1.3
Typ.
–
–
–
–
Max.
220
+10
+15
+20
+25
+50
1
55
300
–
–
–
2.3
1.8
1.8
Unit
MHz
PPM
PPM
PPM
PPM
PPM
PPM
%
ps
ps
ps
ps
ps
ps
ps
Page 4 of 13
SiT3702
PRELIMINARY
LVPECL / LVDS / CML / HCSL
Voltage Controlled MEMS Oscillator
LVPECL, 2.5V ±10%, -40 to 85°C
Symbol
F
out
F
sta
Parameter
Output Frequency
Frequency Stability
Inclusive of initial tolerance,
operating temp., rated
power supply voltage
change, load change
0 to 70°C
-20 to 70°C
-40 to 85°C
Condition
Min.
1.0
-10
-15
-20
-25
-50
F
age
DC
t
R
/t
F
PH
J
Aging
Duty Cycle
Output Rise/Fall Time
RMS Phase Jitter (random)
20% to 80%
F
out
= 106.25 MHz @ BW: 637 kHz to10 MHz
F
out
= 156.25 MHz @ BW: 1.875 to 20 MHz
F
out
= 200 MHz @ BW: 1 to 20 MHz
P
J
RMS Period Jitter
F
out
= 106.25 MHz
F
out
= 156.25 MHz
F
out
= 200 MHz
First year @ 25°C
–
45
100
–
–
–
–
–
–
–
–
150
1.6
0.5
0.7
1.8
1.3
1.3
Typ.
–
–
–
–
Max.
220
+10
+15
+20
+25
+50
1
55
300
–
–
–
2.3
1.8
1.8
Unit
MHz
PPM
PPM
PPM
PPM
PPM
PPM
%
ps
ps
ps
ps
ps
ps
ps
HCSL, 3.3V ±10%, -40 to 85°C
Symbol
F
out
F
sta
Parameter
Output Frequency
Frequency Stability
Inclusive of initial tolerance,
operating temp., rated power
supply voltage change, load
change
0 to 70°C
-20 to 70°C
-40 to 85°C
Condition
Min.
1.0
-10
-15
-20
-25
-50
F
age
DC
t
R
/t
F
PH
J
P
J
Aging
Duty Cycle
Output Rise/Fall Time
RMS Phase Jitter (random)
RMS Period Jitter
20% to 80%
F
out
= 100 MHz @ BW: 1.5 MHz to 22 MHz
F
out
= 200 MHz @ BW: 1.5 MHz to 22 MHz
F
out
= 100 MHz
F
out
= 200 MHz
First year @ 25°C
–
45
200
–
–
–
–
–
–
280
0.8
0.4
1.6
1.5
Typ.
–
–
–
–
Max.
220
+10
+15
+20
+25
+50
1
55
375
–
–
2.2
1.9
Unit
MHz
PPM
PPM
PPM
PPM
PPM
PPM
%
ps
ps
ps
ps
ps
Page 5 of 13
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