SiTime Corporation 990 Almanor Avenue Sunnyvale, CA 94085 (408) 328-4400 www.sitime.com
Rev. 1.5 Revised May 30, 2010
SiT8003
Low Power 1-110 MHz Oscillator
■The world’s lowest power programmable oscillator with 3.2 mA typical active current
■1-110 MHz frequency range
■LVCMOS/LVTTL compatible output
■Frequency stability as low as ±20 PPM
■Standby current as low as 0.5 μA
■Fast resume time of 3.0 ms typical
■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
■Outstanding mechanical robustness for portable applications
■All-silicon device with outstanding reliability of 2 FIT (10x improvement over quartz-based devices),
enhancing system mean-time-to-failure (MTBF)
■Ultra short lead time
■Ideal for portable applications: portable media players, digital cameras, digital camcorders, portable
navigation devices, handheld gaming, cell phones and other battery-powered handheld applications
■Ideal for high-speed serial protocols such as: USB 1.1, USB 2.0, USB 3.0, SATA, SAS, Firewire,
Ethernet, etc.
Electrical Characteristics
Parameter Symbol Min. Typ. Max. Unit Condition
Output Frequency Range f 1 – 110 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
-30 – +30 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 1.71 1.8 1.89 V
2.25 2.5 2.75 V
2.52 2.8 3.08 V
2.97 3.3 3.63 V
Current Consumption Idd – 3.7 4.1 mA No load condition, f = 20 MHz, Vdd = 2.5 V, 2.8 V or 3.3 V
– 3.2 3.5 mA No load condition, f = 20 MHz, Vdd = 1.8 V
Standby Current I_std – 2.4 4.3 μAST = GND, Vdd = 3.3 V, Output is Weakly Pulled Down
–1.22.2μAST
= GND, Vdd = 2.5 or 2.8 V, Output is Weakly Pulled Down
–0.40.8μAST
= GND, Vdd = 1.8 V, Output is Weakly Pulled Down
Duty Cycle DC 45 50 55 % All Vdds. f <= 75 MHz
40 50 60 % All Vdds. f > 75 MHz
Rise/Fall Time Tr, Tf – 1 2 ns 20% - 80% Vdd=2.5 V, 2.8 V or 3.3 V, 15 pf load
- 1.3 2.5 ns 20% - 80% Vdd=1.8 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)
IOH = -2 mA (Vdd = 1.8 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)
IOL = 2 mA (Vdd = 1.8 V)
Output Load Ld – – 15 pF At maximum frequency and 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_osc – – 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 – – 4.0 ps f = 75 MHz, Vdd = 2.5 V, 2.8 V or 3.3 V
– – 5.5 ps f = 75 MHz, Vdd = 1.8 V
RMS Phase Jitter (random) T_phj – 0.6 – ps f = 75 MHz, Integration bandwidth = 900 kHz to 7.5 MHz,
VDD = 2.5 V, 2.8 V, or 3.3 V
– 0.8 – ps f = 75 MHz, Integration bandwidth = 900 kHz to 7.5 MHz, VDD = 1.8 V
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Features, Benefits and Applications