SiT8021 1 to 26 MHz, Ultra-Small Power Oscillator Description Features The SiT8021 is the industry s smallest and the lowest Ultra-low current consumption of 60 A at 3.072 MHz power MHz oscillator. With 0.1 mW of active power Ultra-small 1.5 mm x 0.8 mm package consumption at 3.072 MHz output frequency, this Power 1 to 26 MHz with 6 decimal places of accuracy oscillator enables longer battery life for a wearable, IoT or mobile device compared to a quartz-based oscillator or Operating temperature from -40C to 85C resonator. Frequency stability as low as 50 ppm The device comes in the smallest 1.5 mm x 0.8 mm Programmable output drive strength for best EMI or package. The unique combination of ultra-low power, ultra- driving multiple loads small package and flexible output frequency makes it ideal Ultra-light weight of 1.28 mg for power sensitive and space constrained applications. RoHS and REACH compliant, Pb-free, Halogen-free and Antimony-free Applications Tablets Fitness bands Health and medical monitoring Wearables Portable audio Input devices IoT devices 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 1.000000 26.000000 MHz Frequency Stability and Aging Initial Tolerance f tol -15 +15 ppm Frequency offset at 25C post reflow Frequency Stability f stab -100 +100 ppm Inclusive of initial tolerance, and variations over operating temperature -20C to +70C or -40C to +85C, rated power supply voltage and output load -50 +50 ppm Inclusive of initial tolerance, and variations over operating temperature -20C to +70C, rated power supply voltage and output load First Year Aging f 1year -3 +3 ppm at 25C Operating Temperature Range Operating Temperature Range T use -20 +70 C Extended Commercial -40 +85 C Industrial. Contact SiTime for -40C to 105C option. Supply Voltage and Current Consumption Supply Voltage VDD 1.62 1.8 1.98 V 2.25 3.63 V Any voltage from 2.25 to 3.63 V 1,3 IDD 60 A f = 3.072 MHz, Vdd = 1.8 V, no load Current Consumption 110 130 A f = 6.144 MHz, Vdd = 1.8 V, no load 230 270 A f = 6.144 MHz, Vdd = 1.8 V, 10 pF load 160 A f = 6.144 MHz, Vdd = 2.25 V to 3.63 V, no load 160 A f = 12 MHz, Vdd = 1.8 V, no load 3 I std 0.7 1.3 A Vdd = 1.8 V, ST pin = HIGH, output is weakly pulled down Standby Current Vdd = 2.25 V to 3.63 V, ST pin = HIGH, output is weakly 1.5 A pulled down Rev 1.31 29 March 2021 www.sitime.com SiT8021 1 to 26 MHz, Ultra-Small Power Oscillator Table 1. Electrical Characteristics (continuous) Parameters Symbol Min. Typ. Max. Unit Condition LVCMOS Output Characteristics Duty Cycle DC 45 55 % 3 T r, T f Vdd = 1.8 V, 20% - 80%. Contact SiTime for other Rise/Fall Time 4 8 ns programmable rise/fall options Vdd = 2.25 V to 3.63 V, 20% - 80%. Contact SiTime for other 8 ns programmable rise/fall options Output High Voltage VOH IOH = -0.5 mA (Vdd = 1.8 V) 90% VDD IOH = -1.2 mA (Vdd = 2.25 V to 3.63 V) Output Low Voltage VOL IOL = 0.5 mA (Vdd = 1.8 V) 10% VDD IOL = 1.2 mA (Vdd = 2.25 V to 3.63 V) Input Characteristics Input High Voltage VIH 80% VDD Input Low Voltage VIL 20% VDD Input Slew Rate In-slew 10 V/s Input Pull-down Impedance Z in 300 k Active mode (ST pin = LOW), Vdd = 1.8 V 270 k Active mode (ST pin = LOW), Vdd = 2.25 V to 3.63 V 2.5 M Standby mode (ST pin = HIGH), Vdd = 1.8 V 1.3 M Standby mode (ST pin = HIGH), Vdd = 2.25 V to 3.63 V Startup, Standby and Resume Timing Startup Time T start 75 150 ms Measured from the time VDD reaches 90% of its final value Standby Time T stdby 20 s Measured from the time ST pin crosses 50% threshold Resume Time T resume 2 3 ms Measured from the time ST pin crosses 50% threshold Jitter 3 T jitt 75 110 ps RMS Period Jitter f = 6.144 MHz, Vdd = 1.8 V 110 ps f = 6.144 MHz, Vdd = 2.25 V to 3.63 V 3 T phj 0.8 2.5 ns f = 6.144 MHz, Vdd = 1.8 V, RMS Phase Jitter 2 Integration bandwidth = 100 Hz to 40 kHz 2.5 ns f = 6.144 MHz, Vdd = 2.25 V to 3.63 V, 2 Integration bandwidth = 100 Hz to 40 kHz Notes: 1. Current consumption with load is a function of the output frequency and output load. For any given output frequency, the capacitive loading will increase current consumption equal to C load*VDD*f(MHz). 2. Max spec inclusive of 25 mV peak-to-peak sinusoidal noise on VDD. Noise frequency 100 Hz to 20 MHz. 3. Refer to the performance plot section for typical values at 2.5, 2.8, 3.0 and 3.3 V condition Top View Table 2. Pin Description Pin Symbol Functionality ST GND 1 4 L: Specified frequency output 1 ST Input H: Output is low (weak pull down). Device goes to the standby mode. Supply current reduces to I std. 2 OUT Output LVCMOS clock output 3 OUT 2 VDD 3 VDD Power Supply voltage. Bypass with a 0.01 F X7R capacitor. 4 GND Power Connect to ground Figure 1. Pin Assignments Rev 1.31 Page 2 of 10 www.sitime.com