SiTime Corporation 990 Almanor Avenue Sunnyvale, CA 94085 (408) 328-4400 www.sitime.com
Rev. 1.51 Revised August 9. 2010
SiT3701
Smallest Voltage Controlled MEMS Oscillator (VCMO)
Electrical Characteristics
Notes:
1. Absolute Pull Range (APR) is defined as the guaranteed pull range over temperature and voltage.
2. APR = pull range (PR) - frequency stability (F_stab).
■ The world’s only VCMO with programmable pull range: ±60 PPM, ±120 PPM, ±240 PPM
■ Typical pull range linearity of 0.06%
■ 1-110 MHz frequency range
■ LVCMOS/LVTTL compatible output
■ Typical power consumption of 6.1 mA in active mode
■ Typical VCMO tuning voltage: 0 V to 1.85 V for all Vdds
■ Four industry-standard 4-pin packages: 2.5 x 2.0, 3.2 x 2.5, 5.0 x 3.2, 7.0 x 5.0 mm
■ All-silicon timing device with outstanding reliability of 2 FIT (10x improvement over
quartz-based devices), enhancing system MTBF
■ Ultra short lead time
■ Ideal for Set-top Box, DTV, DVD-R, instrumentation, low bandwidth analog PLL,
networking and communications
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.
±20 PPM is available for extended commercial temperature
only.
-25 – +25 PPM
-30 – +30 PPM
-50 – +50 PPM
Pull Range
[1,2]
PR ±60, ±120, ±240 PPM
Upper Control Voltage VC_U 1.55 – 1.85 V All Vdds. Voltage at which maximum deviation (+60, +120,
+240 PPM) is guaranteed.
Lower Control Voltage VC_L 0 – 0.1 V All Vdds. Voltage at which maximum deviation (-60, -120,
-240 PPM) is guaranteed.
Linearity Lin – 0.06 0.25 %
Frequency Change Polarity – Positive slope –
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 – 6.7 7.5 mA No load condition, f = 20 MHz, Vdd = 2.5 V, 2.8 V or 3.3 V
– 6.1 6.7 mA No load condition, f = 20 MHz, Vdd = 1.8 V
Duty Cycle DC 45 – 55 % All Vdds. f <= 75 MHz
40 – 60 % All Vdds. f > 75 MHz
Rise/Fall Time Tr, Tf – 1 2.0 ns Vdd = 2.5, 2.8 or 3.3 V, 20% - 80% Vdd level
– 1 2.5 ns Vdd = 1.8 V, 20% - 80% Vdd level
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 Maximum frequency and supply voltage
Contact SiTime for higher output load
Start-up Time T_osc – – 10 ms Time @ minimum supply voltage to be zero
RMS Period Jitter T_jitt – – 6 ps f = 75 MHz, Vdd = 1.8 V
– – 4 ps f = 75 MHz, Vdd = 2.5 V, 2.8 V or 3.3 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
