SiT2002B High Frequency, Single Chip, SOT23 Oscillator Features Applications Any frequency between 115 MHz to 137 MHz accurate GEPON, network switches, routers, servers, to 6 decimal places of accuracy embedded systems, industrial and medical devices Operating temperature from -40C to 85C. Ethernet, PCI-E, DDR, etc. Refer to SiT2019 for -40C to 125C and SiT2021 for -55C to 125C options Excellent total frequency stability as low as 20 PPM Low power consumption of 4.9 mA typical at 1.8V LVCMOS/LVTTL compatible output 5-pin SOT23-5: 2.9 mm x 2.8 mm RoHS and REACH compliant, Pb-free, Halogen-free and Antimony-free For AEC-Q100 oscillators, refer to SiT2024 and SiT2025 Electrical Specifications Table 1. Electrical Characteristics All Min and Max limits are specified over temperature and rated operating voltage with 15 pF output load unless otherwise stated. Typical values are at 25C and nominal supply voltage. Parameters Symbol Min. Typ. Max. Unit Condition Frequency Range Output Frequency Range f 115 137 MHz Frequency Stability and Aging Frequency Stability F stab -20 +20 PPM Inclusive of Initial tolerance at 25C, 1st year aging at 25C, and variations over operating temperature, rated power supply -25 +25 PPM voltage and load (15 pF 10%). -50 +50 PPM Operating Temperature Range Operating Temperature Range T use -20 +70 C Extended Commercial (Ambient) -40 +85 C Industrial Supply Voltage and Current Consumption Supply Voltage Vdd 1.62 1.8 1.98 V 2.25 2.5 2.75 V 2.52 2.8 3.08 V 2.7 3.0 3.3 V 2.97 3.3 3.63 V 2.25 3.63 V No load condition, f = 125 MHz, Vdd = 2.8V, 3.0V, 3.3V or Current Consumption Idd 6.2 7.5 mA 2.25 to 3.63V 5.5 6.4 mA No load condition, f = 125 MHz, Vdd = 2.5V 4.9 5.6 mA No load condition, f = 125 MHz, Vdd = 1.8V Vdd = 2.5V to 3.3V, OE = Low, Output in high Z state OE Disable Current I od 4.3 mA 4.1 mA Vdd = 1.8V, OE = Low, Output in high Z state Standby Current I std 2.6 4.3 A Vdd = 2.8V to 3.3V, ST = Low, Output is weakly pulled down 1.4 2.5 A Vdd = 2.5V, ST = Low, Output is weakly pulled down 0.6 1.3 A Vdd = 1.8V, ST = Low, Output is weakly pulled down LVCMOS Output Characteristics Duty Cycle All Vdds DC 45 55 % Vdd = 2.5V, 2.8V, 3.0V or 3.3V, 20% - 80% Rise/Fall Time Tr, Tf 1.0 2.0 ns 1.3 2.5 ns Vdd =1.8V, 20% - 80% Vdd = 2.25V - 3.63V, 20% - 80% 1.0 2.0 ns IOH = -4 mA (Vdd = 3.0V or 3.3V) Output High Voltage VOH 90% Vdd IOH = -3 mA (Vdd = 2.8V and Vdd = 2.5V) IOH = -2 mA (Vdd = 1.8V) IOL = 4 mA (Vdd = 3.0V or 3.3V) Output Low Voltage VOL 10% Vdd IOL = 3 mA (Vdd = 2.8V and Vdd = 2.5V) IOL = 2 mA (Vdd = 1.8V) Rev. 1.02 April 19, 2018 www.sitime.com SiT2002B High Frequency, Single Chip, SOT23 Oscillator Table 1. Electrical Characteristics (continued) Parameters Symbol Min. Typ. Max. Unit Condition Input Characteristics Input High Voltage VIH 70% Vdd Pin 1, OE or ST Input Low Voltage VIL 30% Vdd Pin 1, OE or ST Input Pull-up Impedance Z in 50 87 150 k Pin 1, OE logic high or logic low, or ST logic high 2 M Pin 1, ST logic low Startup and Resume Timing Startup Time T start 5 ms Measured from the time Vdd reaches its rated minimum value Enable/Disable Time T oe f = 115 MHz. 130 ns For other frequencies, T oe = 100 ns + 3 * clock periods Resume Time T resume 5 ms Measured from the time ST pin crosses 50% threshold Jitter RMS Period Jitter T jitt 1.9 3 ps f = 125 MHz, Vdd = 2.5V, 2.8V, 3.0V or 3.3V 1.6 4 ps f = 125 MHz, Vdd = 1.8V Peak-to-peak Period Jitter T pk 12 20 ps f = 125 MHz, Vdd = 2.5V, 2.8V, 3.0V or 3.3V 14 30 ps f = 125 MHz, Vdd = 1.8V RMS Phase Jitter (random) T phj 0.5 0.9 ps Integration bandwidth = 900 kHz to 7.5 MHz 1.3 2 ps Integration bandwidth = 12 kHz to 20 MHz Table 2. Pin Description Top View Pin Symbol Functionality OE / / NC NC GND 1 GND Power Electrical ground 2 NC No Connect No connect 1 H : specified frequency output Output Enable L: output is high impedance. Only output driver is disabled. 1 H or Open : specified frequency output Standby 3 OE / ST /NC L: output is low (weak pull down). Device goes to sleep mode. Supply current reduces to I std. 1 Any voltage between 0 and Vdd or Open : No Connect Specified frequency output. Pin 3 has no function. 2 VDD OUT 4 VDD Power Power supply voltage 5 OUT Output Oscillator output Figure 1. Pin Assignments Notes: 1. In OE or mode, a pull-up resistor of 10 k or less is recommended if pin 3 is not externally driven. If pin 3 needs to be left floating, use the NC ST option. 2. A capacitor of value 0.1 F or higher between Vdd and GND is required. Rev. 1.02 Page 2 of 16 www.sitime.com