SiTime Corporation 990 Almanor Avenue Sunnyvale, CA 94085 (408) 328-4400 www.sitime.com
Rev. 1.0 Revised November 11, 2010
SiT8004
Low Power Oscillator for High Frequency Applications
■Lowest power, high frequency oscillator with 6.3 mA typical active current
■125MHz to 150MHz frequency range
■LVCMOS/LVTTL compatible output
■Excellent frequency stability over temperature, ±20 PPM
■Ultra low standby current, 1.2 µA
■Standby or output enable modes
■Four industry-standard packages: 2.5 x 2.0, 3.2 x 2.5, 5.0 x 3.2, 7.0 x 5.0 mm
■Drop-in replacement of quartz
■Ultra short lead time
■All-silicon device with outstanding reliability of 2 FIT (10x improvement over quartz-based devices),
enhancing system mean-time-to-failure (MTBF)
■Ideal for high frequency applications in networking, storage, computer servers and communications
■Ideal for high speed protocals: GPON, EPON, Ethernet, SATA/SAS, DDR, PCI
Electrical Characteristics
Parameter Symbol Min. Typ. Max. Unit Condition
Output Frequency Range f 125 - 150 MHz
Frequency Stability F_stab -20 – +20 PPM Inclusive of: Initial stability, operating temperature, rated power,
supply voltage change, load change, shock and vibration
± 20 PPM available in extended commercial temperature only
-25 – +25 PPM
-50 – +50 PPM
Aging Ag –1.0 – 1.0 PPM 1st year at 25°C
Operating Temperature Range T_use -20 – +70 °C Extended Commercial
-40 – +85 °C Industrial
Supply Voltage Vdd 2.25 2.5 2.75 V
2.52 2.8 3.08 V
2.97 3.3 3.63 V
Current Consumption Idd – 6.7 8 mA No load condition, f = 125 MHz, Vdd = 3.3 V
– 6.2 7 mA No load condition, f = 125 MHz, Vdd = 2.5 V or 2.8 V
Standby Current I_std – 2.4 4.3 µA ST = GND, Vdd = 3.3 V, Output is Weakly Pulled Down
– 1.2 2.2 µA ST = GND, Vdd = 2.5 or 2.8 V, Output is Weakly Pulled Down
Duty Cycle DC 40 50 60 % All Vdds
Rise/Fall Time Tr, Tf – 1 2 ns 20% - 80% Vdd=2.5 V, 2.8 V or 3.3 V, 15 pf load
Output Voltage High VOH 90% – – Vdd IOH = -4 mA (Vdd = 3.3 V)
IOH = -3 mA (Vdd = 2.8 V and Vdd = 2.5 V)
Output Voltage Low VOL – – 10% Vdd IOL = 4 mA (Vdd = 3.3 V)
IOL = 3 mA (Vdd = 2.8 V and Vdd = 2.5 V)
Output Load Ld – – 15 pF At 125MHz and max supply voltage. Contact SiTime for higher output
load option
Input Voltage High VIH 70% – – Vdd Pin 1, OE or ST
Input Voltage Low VIL – – 30% Vdd Pin 1, OE or ST
Startup Time T_start – – 10 ms Measured from the time Vdd reaches its rated minimum value
Resume Time T_resume – 3.0 3.8 ms Measured from the time ST pin crosses 50% threshold
RMS Period Jitter T_jitt – – 4.5 ps f = 125 MHz, Vdd = 2.5 V, 2.8 V or 3.3 V
RMS Phase Jitter (random) T_phj – 0.5 – ps f = 125 MHz, Integration bandwidth = 900 kHz to 7.5 MHz,
VDD = 2.5 V, 2.8 V, or 3.3 V
■
Features, Benefits and Applications
■
Specifications
SiT8004
Low Power Oscillator for High Frequency Applications
Rev. 1.0 Page 2 of 4
www.sitime.com
Pin Description Tables
Absolute Maximum Table
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.
Environmental Compliance
Startup and Resume Timing Diagram
Pin #1 Functionality Pin Map
OE Pin Connection
H or Open: specified frequency output 1 OE/ST
L: output is high impedance 2 GND
ST 3 CLK
H or Open: specified frequency output 4 VDD
L: output is low level (weak pull down). Oscillation stops
Parameter Min. Max. Unit
Storage Temperature -65 150 °C
VDD -0.5 4 V
Electrostatic Discharge – 2000 V
Theta JA (with copper plane on VDD and GND) – 75 °C/W
Theta JC (with PCB traces of 0.010 inch to all pins) – 24 °C/W
Soldering Temperature (follow standard Pb free soldering guidelines) – 260 °C
Number of Program Writes – 1 NA
Program Retention over -40 to 125°C, Process, VDD (0 to 3.65 V) 1,000+ – years
Parameter Condition/Test Method
Mechanical Shock MIL-STD-883F, Method 2002
Mechanical Vibration MIL-STD-883F, Method 2007
Temperature Cycle JESD22, Method A104
Solderability MIL-STD-883F, Method 2003
Moisture Sensitivity Level MSL1 @ 260°C
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Specifications (Cont.)
50% Vdd
Vdd ST Voltage
CLK Output
T_resum e
T_resum e: Time to resum e from ST
90% Vdd Vdd Pin 4 Voltage
CLK Output
T_start
T_start: Time to start from power-off
(ST/OE Mode) (ST M ode Only)
SiT8004
Low Power Oscillator for High Frequency Applications
Rev. 1.0 Page 3 of 4
www.sitime.com
Notes:
1. Y denotes manufacturing origin and XXXX denotes manufacturing lot number. The value of “Y” will depend on the assembly location of the device.
2. A capacitor of value 0.1 µF between Vdd and GND is recommended.
Package Size – Dimensions (Unit: mm)[2] Recommended Land Pattern (Unit: mm)[3]
2.5 x 2.0 x 0.75 mm
3.2 x 2.5 x 0.75 mm
5.0 x 3.2 x 0.75 mm
7.0 x 5.0 x 0.90 mm
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Dimensions and Land Patterns
2.5 ± 0.10
2.0 ± 0.10
1.1
1.00
0.75
0.5
0.75 ± 0.05
YXXXX
#1
#2
#4#3
#2
#1
#3#4
1.9
1.1
1.0
1.5
3.2 ± 0.15
2.5 ± 0.15
2.1
0.9
0.7
0.9
0.75 ± 0.05
#1
#2
#4#3
#2
#1
#3#4
YXXXX
2.2
1.9
1.4
1.2
5.0 ± 0.15
3.2 ± 0.15
2.39
0.8
1.15
1.1
0.75 ± 0.05
#1#2
#4#3
#2
#1
#3#4
YXXXX
2.54
1.5
1.6
2.2
5.0 ± 0.15
1.4
1.1
5.08
7.0 ± 0.15
2.6
1.7
0.90 ± 0.10
YXXXX
#1#2
#4#3
#2
#1
#3#4
5.08
3.81
2.2
2.0
Rev. 1.0 Page 4 of 4
Revised November 11, 2010
© SiTime Corporation 2010. The information contained herein is subject to change at any time without notice. SiTime assumes no responsibility or liability for any loss, damage or defect of a
Product which is caused in whole or in part by (i) use of any circuitry other than circuitry embodied in a SiTime product, (ii) misuse or abuse including static discharge, neglect or accident, (iii)
unauthorized modification or repairs which have been soldered or altered during assembly and are not capable of being tested by SiTime under its normal test conditions, or (iv) improper
installation, storage, handling, warehousing or transportation, or (v) being subjected to unusual physical, thermal, or electrical stress.
Disclaimer: SiTime makes no warranty of any kind, express or implied, with regard to this material, and specifically disclaims any and all express or implied warranties, either in fact or by
operation of law, statutory or otherwise, including the implied warranties of merchantability and fitness for use or a particular purpose, and any implied warranty arising from course of dealing or
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at stake. all sales are made conditioned upon compliance with the critical uses policy set forth below.
CRITICAL USE EXCLUSION POLICY
BUYER AGREES NOT TO USE SITIME'S PRODUCTS FOR ANY APPLICATION OR IN ANY COMPONENTS USED IN LIFE SUPPORT DEVICES OR TO OPERATE NUCLEAR FACILITIES
OR FOR USE IN OTHER MISSION-CRITICAL APPLICATIONS OR COMPONENTS WHERE HUMAN LIFE OR PROPERTY MAY BE AT STAKE.
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does not convey or imply any license under patent or other rights. SiTime retains the copyright and trademark rights in all documents, catalogs and plans supplied pursuant to or ancillary to
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strictly prohibited.
SiT8004
Low Power Oscillator for High Frequency Applications
Note:
3. Contact SiTime for different drive strength options for driving higher loads or reducing EMI.
Frequency Stability vs. Temperature Range Options
Frequency
Stability (PPM)
Temperature
Range
Supply Voltage
2.5 V 2.8 V 3.3 V
±
20 C (-20 to +70°C)
I (-40 to +85°C) – – –
±
25 C (-20 to +70°C)
I (-40 to +85°C)
±
50 C (-20 to +70°C)
I (-40 to +85°C)
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Part No. Guide
-
How to Order
SiT8004AC -12-33E - 125.00000T
Frequency
125.00000 to 150.00000 MHz
Part Family
“SiT8004”
Revision Letter
“A” is the revision
Temperature Range
“I” Industrial, -40 to 85
o
C Voltage Supply
“25” for 2.5 V
“28” for 2.8 V
“33” for 3.3 V
Packaging
“T” for Tape & Reel
Blank for Bulk
Feature Pin
“E” for Output Enable
“S” for Standby
“C” Extended Commercial, -20 to 70
o
C
Package Size
“1” 2.5 x 2.0 mm
Frequency Stability
“2” 3.2 x 2.5 mm
“3” 5.0 x 3.2 mm
“8” 7.0 x 5.0 mm
“1” for ±20 PPM
“2” for ±25 PPM
“3” for ±50 PPM
Output Driver Strength
“_” Default
“Y” for Tape & Reel, 1K reel
[3]
