Field Programmable Oscillator
Description
SiTime offers a wide range of field programmable (FP)
MEMS oscillators including simple oscillators, differential
oscillators, high temperature oscillators, VCXO and
spread spectrum oscillators. These FP devices support
the same specifications and performance as their factory-
programmed counterparts.
They enable engineers to experiment with different
configurations and generate customized samples in
seconds for fast prototyping.
Figure 1
illustrates the simple programming setup
required for programming SiTime FP devices by using
the SiT6100DK, a field programming kit. Refer to
SiT6100DK quick start guide and
other documents for
more information.
For production volume, SiTime offers factory
programming of its entire portfolio with the shortest lead
time available in the industry.
Features
Applications
Generic samples in seconds for prototype builds
Experiment with different options for optimal
timing margin
Configure different drive strengths for best EMI and/or
to drive larger loads
Fast prototype builds
Support for 8 MEMS oscillator families
Low power
(SiT1602, SiT8008, SiT8009)
Ultra-performance
(SiT8208, SiT8209)
Ultra-performance differential
(SiT9120, SiT9121, SiT9122)
High temp
(SiT1618, SiT8918, SiT8919, SiT8920,
SiT8921)
AEC-Q100 Automotive
(SiT2024, SiT2025, SiT8924,
SiT8925)
Clock Generators
(SiT2001, SiT2002, SiT2018,
SiT2019, SiT2020, SiT2021)
VCXO
(SiT3807, SiT3808, SiT3809)
Differential VCXO
(SiT3821, SiT3822)
Spread spectrum
(SiT9005, SiT9003)
Differential spread spectrum
(SiT9002)
Wide variety of programmable options
Frequency from 1 – 625 MHz
Frequency stability from ±20 to ±50 ppm
Supply voltages of 1.8V or 2.5 to 3.3V
Operating temperature up to 125 °C and down to -55°C
Package sizes for 2.0 x 1.6 to 7.0 x 5.0 mm x mm
Pull ranges from ±25 to ±1600 ppm (VCXO only)
Spread percentage from ±0.25% to ±2% or
-0.5% to -4% (Spread spectrum only)
Rise/fall time from 0.25 ns to 40 ns
Pb-free, RoHS and REACH compliant
Figure 1. Field Programmable Software and Hardware
Rev 1.5
February 1, 2018
www.sitime.com
Field Programmable Oscillator
Field Programmable Device
Ordering Information
A FP device works as a superset of its programmed
counterpart. In certain cases, it can also be mapped to
different programmed base products.
As an example, SiT8008BI-71-XXX-000.FP0000 is a field
programmable device in the low power family. It comes in the
2.0 x 1.6 mm package, and can be programmed to support
different combinations of the following:
In addition, the SiT8008BI-11--XXX-000.FP0000 can be
used for either
SiT1602
or
SiT8008
in the
2.0 x 1.6 mm x mm package. The SiT1602 and the
SiT8008 share similar electrical specs and the same
field programmable devices, but they support different
frequencies.
Please see Supported Device column to figure out
which product families can be programmed using the
given FP part.
Contact
SiTime
for devices of your interest that are not
covered here.
Frequency: 1 MHz to 110 MHz with 6 decimal places
of accuracy
Frequency stability: ±20 ppm, ±25 ppm, ±50 ppm
Temperature range: -20°C to 70°C, -40°C to 85°C
Supply voltages: 1.8V or 2.5V to 3.3V
Output drive strength: 8 different options for different
rise/fall time
Table 1. Field Programmable Devices - MEMS XO
[1]
Oscillator
Product
Family
Field Programmable (FP)
Part Number
SiT8008BI-71-XXX-000.FP0000
SiT8008BI-11-XXX-000.FP0000
SiT8008BI-21-XXX-000.FP0000
SiT8008BI-31-XXX-000.FP0000
Low Power
Single-Ended
Oscillator
SiT8008BI-81-XXX-000.FP0000
SiT8009BI-71-XXX-000.FP0000
SiT8009BI-11-XXX-000.FP0000
SiT8009BI-21-XXX-000.FP0000
SiT8009BI-31-XXX-000.FP0000
SiT8009BI-81-XXX-000.FP0000
SiT8208AI-G1-XXX-000.FP0000
SiT8208AI-21-XXX-000.FP0000
Ultra-
Performance
Single-Ended
Oscillator
SiT8208AI-31-XXX-000.FP0000
SiT8209AI-G1-XXX-000.FP0000
SiT8209AI-21-XXX-000.FP0000
SiT8209AI-31-XXX-000.FP0000
SiT9121AI-1B1-XXX000.FP0000
SiT9121AI-1C1-XXX000.FP0000
SiT9121AI-1D1-XXX000.FP0000
SiT9121AI-2B1-XXX000.FP0000
SiT9121AI-2C1-XXX000.FP0000
High
Performance
Differential
Oscillator
SiT9121AI-2D1-XXX000.FP0000
SiT9122AI-1B1-XXX000.FP0000
SiT9122AI-1C1-XXX000.FP0000
SiT9122AI-1D1-XXX000.FP0000
SiT9122AI-2B1-XXX000.FP0000
SiT9122AI-2C1-XXX000.FP0000
SiT9122AI-2D1-XXX000.FP0000
LVDS
220 to 625
±20, ±25, ±50
-40 to 85,
-20 to 70
2.5V,
3.3V
SiT9122
LVPECL
220 to 625
±20, ±25, ±50
-40 to 85,
-20 to 70
2.5V,
3.3V
SiT9120,
SiT9121
LVDS
1 to 220
±20, ±25, ±50
-40 to 85,
-20 to 70
2.5V,
3.3V
LVPECL
1 to 220
±20, ±25, ±50
-40 to 85,
-20 to 70
2.5V,
3.3V
SiT8209
LVCMOS
80 to 220
±20, ±25, ±50
-40 to 85,
-20 to 70
1.8V,
2.5-3.3V
SiT8208
LVCMOS
1 to 80
±20, ±25, ±50
-40 to 85,
-20 to 70
1.8V,
2.5-3.3V
SiT8009
LVCMOS
115 to 137
±20, ±25, ±50
-40 to 85,
-20 to 70
1.8V,
2.5-3.3V
SiT1602,
SiT8008
LVCMOS
1 to 110
±20, ±25, ±50
-40 to 85,
-20 to 70
1.8V,
2.5-3.3V
Supported
Devices
Signaling
Type
Frequency
Range
(MHz)
Frequency
Stability
(ppm)
Temp
Range
(°C)
Voltage
(V)
Package
Size
(mm x mm)
2.0 x 1.6
2.5 x 2.0
3.2 x 2.5
5.0 x 3.2
7.0 x 5.0
2.0 x 1.6
2.5 x 2.0
3.2 x 2.5
5.0 x 3.2
7.0 x 5.0
3.2 x 2.5
5.0 x 3.2
7.0 x 5.0
3.2 x 2.5
5.0 x 3.2
7.0 x 5.0
3.2 x 2.5
5.0 x 3.2
7.0 x 5.0
3.2 x 2.5
5.0 x 3.2
7.0 x 5.0
3.2 x 2.5
5.0 x 3.2
7.0 x 5.0
3.2 x 2.5
5.0 x 3.2
7.0 x 5.0
Rev 1.5
Page 2 of 11
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Field Programmable Oscillator
Table 1. Field Programmable Devices - MEMS XO
[1]
(continued)
Oscillator
Product
Family
Field Programmable (FP)
Part Number
SiT8920BM-71-XXX-000.FP0000
SiT8920BM-11-XXX-000.FP0000
SiT8920BM-21-XXX-000.FP0000
SiT8920BM-31-XXX-000.FP0000
High
Temperature
Single-Ended
Oscillator
SiT8920BM-81-XXX-000.FP0000
SiT8921BM-71-XXX-000.FP0000
SiT8921BM-11-XXX-000.FP0000
SiT8921BM-21-XXX-000.FP0000
SiT8921BM-31-XXX-000.FP0000
SiT8921BM-81-XXX-000.FP0000
SiT8919,
SiT8921
LVCMOS
SiT1618,
SiT8918,
SiT8920
Supported
Devices
Signaling
Type
Frequency
Range
(MHz)
1 to 110
Refer “Supported
Frequencies”
tables in
SiT1618,
SiT8918
and
SiT8920
datasheets
115.194001 to 137
Refer “Supported
Frequencies”
tables in
SiT8919
and
SiT8921
datasheets
1 to 110
SiT2024BM-S1-XXX-000.FP0000
SiT2024
LVCMOS
Refer “Supported
Frequencies”
table in
SiT2024
datasheet
115.2 to 137
SiT2025BM-S1-XXX-000.FP0000
SiT2025
LVCMOS
Refer “Supported
Frequencies”
table in
SiT2025
datasheet
±20, ±25,
±30, ±50
-40 to 85,
-40 to 105,
-40 to 125,
-55 to 125
1.8V,
2.5-3.3V
2.9 x 2.8
(SOT23-5)
±20, ±25,
±30, ±50
-40 to 85,
-40 to 105,
-40 to 125,
-55 to 125
1.8V,
2.5-3.3V
2.9 x 2.8
(SOT23-5)
±20, ±25,
±30, ±50
-40 to 105,
-40 to 125,
-55 to 125
1.8V,
2.5-3.3V
±20, ±25,
±30, ±50
-40 to 105,
-40 to 125,
-55 to 125
1.8V,
2.5-3.3V
Frequency
Stability
(ppm)
Temp
Range
(°C)
Voltage
(V)
Package
Size
(mm x mm)
2.0 x 1.6
2.5 x 2.0
3.2 x 2.5
5.0 x 3.2
7.0 x 5.0
2.0 x 1.6
2.5 x 2.0
3.2 x 2.5
5.0 x 3.2
7.0 x 5.0
LVCMOS
AEC-Q100
Automotive
Oscillator
SiT8924BM-71-XXX-000.FP0000
SiT8924BM-11-XXX-000.FP0000
SiT8924BM-21-XXX-000.FP0000
SiT8924BM-31-XXX-000.FP0000
SiT8924BM-81-XXX-000.FP0000
SiT8925BM-71-XXX-000.FP0000
SiT8925BM-11-XXX-000.FP0000
SiT8925BM-21-XXX-000.FP0000
SiT8925BM-31-XXX-000.FP0000
SiT8925BM-81-XXX-000.FP0000
SiT2001BI-S1-XXX-000.FP0000
SiT2002BI-S1-XXX-000.FP0000
SiT2001
SiT2002
LVCMOS
LVCMOS
1 to 110
115 to 137
1 to 110
±20, ±25,
±50
±20, ±25,
±50
-40 to 85,
-20 to 70
-40 to 85,
-20 to 70
1.8V,
2.5-3.3V
1.8V,
2.5-3.3V
SiT8925
LVCMOS
115.2 to 137
Refer “Supported
Frequencies”
table in
SiT8925
datasheet
±20, ±25,
±30, ±50
-40 to 85,
-40 to 105,
-40 to 125,
-55 to 125
1.8V,
2.5-3.3V
SiT8924
LVCMOS
1 to 110
Refer “Supported
Frequencies”
table in
SiT8924
datasheet
±20, ±25,
±30, ±50
-40 to 85,
-40 to 105,
-40 to 125,
-55 to 125
1.8V,
2.5-3.3V
2.0 x 1.6
2.5 x 2.0
3.2 x 2.5
5.0 x 3.2
7.0 x 5.0
2.0 x 1.6
2.5 x 2.0
3.2 x 2.5
5.0 x 3.2
7.0 x 5.0
2.9 x 2.8
(SOT23-5)
2.9 x 2.8
(SOT23-5)
Clock
Generator
Oscillator
SiT2020BM-S1-XXX-000.FP0000
SiT2018,
SiT2020
LVCMOS
Refer “Supported
Frequencies”
tables in
SiT2018
and
SiT2020
datasheets
115.194001 to 137
±20, ±25,
±30, ±50
-40 to 105,
-40 to 125,
-55 to 125
1.8V,
2.5-3.3V
2.9 x 2.8
(SOT23-5)
SiT2021BM-S1-XXX-000.FP0000
SiT2019,
SiT2021
LVCMOS
Refer “Supported
Frequencies”
tables in
SiT2019
and
SiT2021
datasheets
±20, ±25,
±30, ±50
-40 to 105,
-40 to 125,
-55 to 125
1.8V,
2.5-3.3V
2.9 x 2.8
(SOT23-5)
Note:
1. Revision number which is placed right after SiTXXXX in the part number is fixed and not programmable. For instance, SiT8008A cannot be
programed to SiT8008B.
Rev 1.5
Page 3 of 11
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Field Programmable Oscillator
Table 2. Field Programmable Devices - MEMS VCXO
[2]
Oscillator
Product
Family
Field Programmable (FP)
Part Number
SiT3808AI-G2-XXXX-000.FP0000
SiT3808AI-22-XXXX-000.FP0000
High
Performance
Single-Ended
VCXO
SiT3808AI-32-XXXX-000.FP0000
SiT3809AI-G2-XXXX-000.FP0000
SiT3809AI-22-XXXX-000.FP0000
SiT3809AI-32-XXXX-000.FP0000
SiT3821AI-1C2-XXXX000.FP0000
LVPECL
SiT3821AI-1D2-XXXX000.FP0000
SiT3821AI-2C2-XXXX000.FP0000
LVDS
High
Performance
Differential
VCXO
SiT3821AI-2D2-XXXX000.FP0000
SiT3822AI-1C2-XXXX000.FP0000
LVPECL
SiT3822AI-1D2-XXXX000.FP0000
SiT3822
SiT3822AI-2C2-XXXX000.FP0000
LVDS
SiT3822AI-2D2-XXXX000.FP0000
220 to 625
±25, ±50
-40 to 85,
-20 to 70
2.5V, 3.3V
±25 to
±1600
5.0 x 3.2
7.0 x 5.0
220 to 625
±25, ±50
1 to 220
±25, ±50
SiT3821
-40 to 85,
-20 to 70
2.5V, 3.3V
±25 to
±1600
1 to 220
±25, ±50
SiT3809
LVCMOS
80 to 220
±25, ±50
-40 to 85,
-20 to 70
1.8V,
2.5-3.3V
±25 to
±1600
SiT3807,
SiT3808
LVCMOS
1 to 80
±25, ±50
-40 to 85,
-20 to 70
1.8V,
2.5-3.3V
±25 to
±1600
Supported
Devices
Signaling
Type
Frequency Frequency
Range
Stability
(MHz)
(ppm)
Temp
Range
(°C)
Voltage
(V)
Pull
Range
(ppm)
Package
Size
(mm x mm)
3.2 x 2.5
5.0 x 3.2
7.0 x 5.0
3.2 x 2.5
5.0 x 3.2
7.0 x 5.0
5.0 x 3.2
7.0 x 5.0
5.0 x 3.2
7.0 x 5.0
5.0 x 3.2
7.0 x 5.0
-40 to 85,
-20 to 70
2.5V, 3.3V
±25 to
±1600
-40 to 85,
-20 to 70
2.5V, 3.3V
±25 to
±1600
Note:
2. Revision number which is placed right after SiTXXXX in the part number is fixed and not programmable. For instance, SiT8008A cannot be programed to
SiT8008B.
Rev 1.5
Page 4 of 11
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Field Programmable Oscillator
Table 3. Field Programmable Devices - MEMS Spread Spectrum XO
[3]
Oscillator
Product
Family
Field Programmable (FP)
Part Number
Supported Signaling
Devices
Type
Frequency
Range
(MHz)
1 to 141
SiT9005
Refer to
Table 4:
SiT9005 FP
LVCMOS
Oscillator
unsupported
frequencies
±20, ±25,
±50
-40 to 85,
-20 to 70
1.8V,
2.5-3.3V
±0.125 to ±2,
-0.25 to -4
Frequency
Stability
(ppm)
Temp
Range
(°C)
Voltage
(V)
Spread
Range
(%)
Package
Size
(mm x mm)
2.0 x 1.6
2.5 x 2.0
3.2 x 2.5
2.5V,
2.8V,
3.3V
SiT9003
LVCMOS
1 to 110
±50, ±100
-40 to 85,
-20 to 70
1.8V
SiT9003AI-83-18XX-000.FP000
7.0 x 5.0
±0.25 to ±0.5,
-0.5 to -1
5.0 x 3.2
7.0 x 5.0
5.0 x 3.2
SiT9005AI-71-XXXX000.FP0000
Spread
Spectrum
SiT9005AI-11-XXXX000.FP0000
Single-Ended
Oscillator
SiT9005AI-21-XXXX000.FP0000
SiT9003AI-33-33XX-000.FP000
Spread
SiT9003AI-83-33XX-000.FP000
Spectrum
Single-Ended
SiT9003AI-33-18XX-000.FP000
Oscillator
SiT9002AI-X32XXXXX000.FP000
Spread
Spectrum
Differential
Oscillator
SiT9002AI-X82XXXXX000.FP000
SiT9002
1 to 220
LVPECL, Refer to
Table 5 :
LVDS,
SiT9002 FP
HCSL,
Oscillator
CML
unsupported
frequencies
-20 to 70:
±25, ±50
-40 to 85:
±50
5.0 x 3.2
-40 to 85,
-20 to 70
1.8V,
2.5V,
3.3V
±0.25 to ±2,
-0.5 to -4
7.0 x 5.0
Note:
3. Revision number which is placed right after SiTXXXX in the part number is fixed and not programmable. For instance, SiT8008A cannot be
programed to SiT8008B.
Table 4. List of SiT9005 FP Oscillator Unsupported Frequencies
SiT9005 FP Oscillator Unsupported Frequency Range (MHz)
±2.06% center spread
Min.
Max.
-4.01% down spread
Min.
Max.
-4.28% center spread
Min.
120.100000
122.900000
123.500000
124.9000000
Max.
122.300000
123.100000
124.000000
125.200000
120.100000 121.100000 121.000000 121.300000
Rev 1.5
Page 5 of 11
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ADI Reference Circuit
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