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SiT8920B Dataheets PDF



Part Number SiT8920B
Manufacturers Sitime
Logo Sitime
Description Oscillator
Datasheet SiT8920B DatasheetSiT8920B Datasheet (PDF)

SiT8920B -55°C to +125°C Oscillator Features Applications ◼ Frequencies between 1 MHz and 110 MHz accurate to 6 decimal places ◼ Operating temperature from -55°C to 125°C ◼ Supply voltage of 1.8 V or 2.5 V to 3.3 V ◼ Excellent total frequency stability as low as ±20 ppm ◼ Low power consumption of 3.5 mA typical at 1.8 V ◼ LVCMOS/LVTTL compatible output ◼ Industry-standard packages: 2.0 x 1.6, 2.5 x 2.0, 3.2 x 2.5, 5.0 x 3.2, 7.0 x 5.0 mm x mm ◼ Instant samples with Time Machine II and field p.

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SiT8920B -55°C to +125°C Oscillator Features Applications ◼ Frequencies between 1 MHz and 110 MHz accurate to 6 decimal places ◼ Operating temperature from -55°C to 125°C ◼ Supply voltage of 1.8 V or 2.5 V to 3.3 V ◼ Excellent total frequency stability as low as ±20 ppm ◼ Low power consumption of 3.5 mA typical at 1.8 V ◼ LVCMOS/LVTTL compatible output ◼ Industry-standard packages: 2.0 x 1.6, 2.5 x 2.0, 3.2 x 2.5, 5.0 x 3.2, 7.0 x 5.0 mm x mm ◼ Instant samples with Time Machine II and field programmable oscillators ◼ RoHS and REACH compliant, Pb-free, Halogen-free and Antimony-free ◼ Ruggedized equipment in harsh operating environment Related products for automotive applications. For aerospace and defense applications SiTime recommends using only Endura™ SiT8944. 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 25°C and nominal supply voltage. Parameters Output Frequency Range Symbol Min. f 1 Typ. Max. Unit Frequency Range – 110 MHz Condition Refer to Table 13 for the exact list of supported frequencies list of supported frequencies Frequency Stability F_stab Operating Temperature Range Supply Voltage T_use Vdd Current Consumption OE Disable Current Standby Current Duty Cycle Rise/Fall Time Output High Voltage Output Low Voltage Idd I_od I_std DC Tr, Tf VOH VOL Frequency Stability and Aging -20 – +20 ppm Inclusive of Initial tolerance at 25°C, 1st year aging at 25°C, -25 – +25 ppm and variations over operating temperature, rated power supply voltage and load (15 pF ±10%). -30 – +30 ppm -50 – +50 ppm Operating Temperature Range -55 – +125 °C Supply Voltage and Current Consumption 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 – 3.8 4.7 mA No load condition, f = 20 MHz, Vdd = 2.8 V, 3.0 V or 3.3 V – 3.6 4.5 mA No load condition, f = 20 MHz, Vdd = 2.5 V – 3.5 4.5 mA No load condition, f = 20 MHz, Vdd = 1.8 V – – 4.5 mA Vdd = 2.5 V to 3.3 V, OE = Low, Output in high Z state. – – 4.3 mA Vdd = 1.8 V, OE = Low, Output in high Z state. – 2.6 8.5 A Vdd = 2.8 V to 3.3 V, ST = Low, Output is weakly pulled down – 1.4 5.5 A Vdd = 2.5 V, ST = Low, Output is weakly pulled down – 0.6 4.0 A Vdd = 1.8 V, ST = Low, Output is weakly pulled down LVCMOS Output Characteristics 45 – 55 % All Vdds – 1.0 2.0 ns Vdd = 2.5 V, 2.8 V, 3.0 V or 3.3 V, 20% - 80% – 1.3 2.5 ns Vdd = 1.8 V, 20% - 80% – 1.0 3 ns Vdd = 2.25 V - 3.63 V, 20% - 80% 90% – IOH = -4 mA (Vdd = 3.0 V or 3.3 V) – Vdd IOH = -3 mA (Vdd = 2.8 V or 2.5 V) IOH = -2 mA (Vdd = 1.8 V) IOL = 4 mA (Vdd = 3.0 V or 3.3 V) – – 10% Vdd IOL = 3 mA (Vdd = 2.8 V or 2.5 V) IOL = 2 mA (Vdd = 1.8 V) Rev 1.03 1 January 2023 www.sitime.com SiT8920B -55°C to +125°C Oscillator Table 1. Electrical Characteristics (continued) Parameters Input High Voltage Input Low Voltage Input Pull-up Impedance Startup Time Enable/Disable Time Resume Time RMS Period Jitter Peak-to-peak Period Jitter RMS Phase Jitter (random) Symbol Min. VIH 70% VIL – Z_in 50 2 T_start – T_oe – T_resume – T_jitt – – T_pk – – T_phj – – Typ. Max. Unit Condition Input Characteristics – – Vdd Pin 1, OE or ST – 30% Vdd Pin 1, OE or ST 87 150 k Pin 1, OE logic high or logic low, or ST logic high – – M Pin 1, ST logic low Startup and Resume Timing – 5 ms Measured from the time Vdd reaches its rated minimum value – 130 ns f = 110 MHz. For other frequencies, T_oe = 100 ns + 3 * clock periods – 5 ms Measured from the time ST pin crosses 50% threshold Jitter 1.6 2.5 ps f = 75 MHz, Vdd = 2.5 V, 2.8 V, 3.0 V or 3.3 V 1.9 3 ps f = 75 MHz, Vdd = 1.8 V 12 20 ps f = 75 MHz, Vdd = 2.5 V, 2.8 V, 3.0 V or 3.3 V 14 25 ps f = 75 MHz, Vdd = 1.8 V 0.5 0.8 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 Pin Symbol Functionality Output Enable H[1]: specified frequency output L: output is high impedance. Only output driver is disabled. H[1]: specified frequency output 1 OE/ST/NC Standby L: output is low (weak pull down). Device goes to sleep mode. Supply current reduces to I_std. No Connect Any voltage between 0 and Vdd or Open[1]: Specified frequency output. Pin 1 has no function. 2 GND Power Electrical ground 3 OUT Output Oscillator output 4 VDD Power Power supply voltage[2] Top View OE/ST/NC 1 4 VDD GND 2 3 OUT Figure 1. Pin Assignments Notes: 1. In OE or ST mode, a pull-up resistor of 10 kΩ or less is recommended if pin 1 is not externally driven. If pin 1 needs to be left floating, use the NC option. .


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