SiT2001B Single-Chip, SOT23 Oscillator Features Applications Any frequency between 1 MHz and 110 MHz accurate Industrial, medical, automotive, avionics and other to 6 decimal places high temperature applications Operating temperature from -40C to 85C. Industrial sensors, PLC, motor servo, outdoor Refer to SiT2018 for -40C to 85C option and networking equipment, medical video cam, asset SiT2020 for -55C to 125C option tracking systems, etc. Excellent total frequency stability as low as 20 ppm Low power consumption of 3.5 mA typical Fast start-up time of 5 ms LVCMOS/HCMOS compatible output 5-pin SOT23-5: 2.9 mm x 2.8mm Pb-free, RoHS and REACH compliant For AEC-Q100 SOT23 Oscillators, refer to SiT2024 and SiT2025 Electrical Specifications 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. Table 1. Electrical Characteristics Parameters Symbol Min. Typ. Max. Unit Condition Frequency Range Output Frequency Range f 1 110 MHz Frequency Stability and Aging st Frequency Stability F stab -20 +20 ppm Inclusive of Initial tolerance at 25C, 1 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 T use -20 +70 C Extended Commercial Range (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 Current Consumption Idd 3.8 4.5 mA No load condition, f = 20 MHz, Vdd = 2.8V, 3.0V or 3.3V 3.7 4.2 mA No load condition, f = 20 MHz, Vdd = 2.5V 3.5 4.1 mA No load condition, f = 20 MHz, Vdd = 1.8V OE Disable Current I od 4.3 mA Vdd = 2.5V to 3.3V, OE = Low, Output in high Z state. 4.1 mA Vdd = 1.8V, OE = Low, Output in high Z state. Standby Current I std 2.6 4.3 A ST Vdd = 2.8V to 3.3V, = 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 DC 45 55 % All Vdds Rise/Fall Time Tr, Tf 1.0 2.0 ns Vdd = 2.5V, 2.8V, 3.0V or 3.3V, 20% - 80% 1.3 2.5 ns Vdd =1.8V, 20% - 80% 2.0 ns Vdd = 2.25V - 3.63V, 20% - 80% IOH = -4 mA (Vdd = 3.0V or 3.3V) Output High Voltage VOH 90% Vdd IOH = -3 mA (Vdd = 2.8V or 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 or 2.5V) IOL = 2 mA (Vdd = 1.8V) Rev. 1.02 April 19, 2018 www.sitime.com Si T2001B 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 3, OE or ST Input Low Voltage VIL 30% Vdd Pin 3, OE or ST Input Pull-up impedance Z in 50 87 150 k Pin 3, OE logic high or logic low, or ST logic high 2 M Pin 3, ST logic low Startup and Resume Timing Startup Time T start 5 ms Measured from the time Vdd reaches its rated minimum value f = 110 MHz. Enable/Disable Time T oe 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 1.8 3 ps f = 75 MHz, Vdd = 2.5V, 2.8V, 3.0V or 3.3V 1.8 3 ps f = 75 MHz, Vdd = 1.8V Peak-to-peak Period Jitter T pk 12 20 ps f = 75 MHz, Vdd = 2.5V, 2.8V, 3.0V or 3.3V 14 25 ps f = 75 MHz, Vdd = 1.8V RMS Phase Jitter (random) T phj 0.5 0.9 ps f = 75 MHz, Integration bandwidth = 900 kHz to 7.5 MHz 1.3 2 ps f = 75 MHz, 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 3 OE/ ST /NC Standby 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 4 VDD Power Power supply voltage OUT 5 OUT Output Oscillator output Figure 1. Pin Assignments Notes: 1. In OE or ST 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 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