SiT1630 Ultra-Low Power, Ultra-Small 32.768 kHz or 16.384 kHz Oscillator Features Applications <20 ppm initial tolerance Industrial timekeeping <100 ppm stability over -40C to +85C Industrial battery management 1 Small SMD package: 2.0 x 1.2 mm (2012) Multi-drop 32 kHz clock distribution SOT23-5 package option for industrial and Bluetooth modules automotive applications WiFi modules Ultra-low power: 1.0 A typ RTC Reference Clock Vdd supply range: 1.5V to 3.63V Wide operating temperature range options Internal filtering eliminates external Vdd bypass capacitors Pb-free, RoHS and REACH compliant Note: 2 1. For the smallest 32 kHz XO in CSP (1.2mm ), consider the SiT1532. Table 1. Electrical Characteristics Parameter Symbol Min. Typ. Max. Unit Condition Frequency and Stability 32.768 or Output Frequency Fout kHz 16.384 Frequency Stability 2 Initial Tolerance F init 20 ppm T = 25C, post reflow, Vdd: 1.5V 3.63V. A 75 T = -10C to +70C, Vdd: 1.5V 3.63V. A Frequency Stability Over T = -40C to +85C, Vdd: 1.5V 3.63V. 3 F stab 100 A Temperature ppm 150 T = -40C to +105C, -55C to +85C, Vdd: 1.8V 3.63V. A st 25C Aging -1 1 ppm 1 Year Supply Voltage and Current Consumption Operating Supply Voltage Vdd 1.5 3.63 V T = over temperature A 1.0 T = 25C, Vdd: 1.5V 3.3V. No load A T = -10C to +70C, Vdd max: 3.63V. No load 1.3 A Operating Current 2Idd 1.4 T = -40C to +85C, Vdd max: 3.63V. No load A A 2.80 T = -40C to +105C, Vdd max: 3.63V. No load A t Vdd Power-Supply Ramp 100 ms Over temperature, 0 to 90% Vdd Ramp 180 300 -40C T 50C, valid output A 450 -40C T 85C, valid output A Start-up Time at Power-up T start 500 + 1 ms T = -55C and +105C A period Operating Temperature Range Commercial Temperature -10 70 Temp code C in part number ordering Industrial Temperature -40 85 Temp code I in part number ordering Extended Industrial Temperature T opn -40 105 Temp code E in part number ordering. C Extended Cold Industrial Temperature -55 85 Temp Code D in part number ordering. Automotive Temperature Range -55 105 Contact SiTime for Availability LVCMOS Output, T = Over Temperature, typical values are at T = 25C A A 100 200 10-90%, 15 pF load, Vdd = 1.5V to 3.63V Output Rise/Fall Time tr, tf ns 10-90% (Vdd), 5 pF load, Vdd 1.62V Output Clock Duty Cycle DC 48 52 % Output Voltage High VOH 90% V Vdd: 1.5V 3.63V. I = -10 A, 15 pF OH Output Voltage Low Vdd: 1.5V 3.63V. I = 10 A, 15 pF VOL 10% V OL Maximum Output Drive 50 pF 80% LVCMOS swing, T = over temperature, Vdd = 1.5V to 3.3V A ns Period Jitter T jitt 35 Cycles = 10,000, T = 25C A RMS Notes: 2. Measured peak-to-peak. Tested with Agilent 53132A frequency counter. Due to the low operating frequency, the gate time must be 100 ms to ensure an accurate frequency measurement. 3. Measured peak-to-peak. Inclusive of Initial Tolerance at 25C, and variations over operating temperature, rated power supply voltage and load. Rev 1.3 February 9, 2018 www.sitime.com YXXX SiT1630 Ultra-Low Power, Ultra-Small 32.768 kHz and 16.384 kHz Oscillator Table 2. Pin Configuration SMD SOT23-5 Symbol I/O Functionality Pin Pin 1 2, 3 NC/GND No Connect Connect to GND or leave floating. Power Supply 2 1 GND Connect to ground. All GND pins must be connected to power supply ground. Ground Oscillator clock output. When interfacing to an MCUs XTAL input, the CLK Out is typically connected to 3 5 CLK Out OUT the receiving ICs X IN pin. Connect to power supply 1.5V Vdd 3.63V. Under normal operating conditions, Vdd does not require 4 4 Vdd Power Supply external bypass/decoupling capacitor(s). Internal power supply filtering will reject more than 150 mVpp with frequency components through 10 MHz. SOT23-5 (Top View) SMD Package (Top View) Vdd 1 5 GND CLK Out 4 2 NC/GND CLK Out NC 1 3 2 3 4 NC/GND VDD GND Figure 1. Pin Assignments Figure 2. Pin Assignments System Block Diagram MEMS Resonator NC/GND Control Regulators Vdd Trim Prog Prog Ultra-low Sustaining Ultra-low GND Divider CLK Out Power Power Amp Driver PLL Figure 3. SIT1630 Block Diagram Table 3. Absolute Maximum Attempted operation outside the absolute maximum ratings cause permanent damage to the part. Actual performance of the IC is only guaranteed within the operational specifications, not at absolute maximum ratings. Parameter Test Condition Value Unit Continuous Power Supply Voltage Range (Vdd) -0.5 to 3.63 V Short Duration Maximum Power Supply Voltage (Vdd) 30 minutes, over -40C to +85C 4.0 V Short Duration Maximum Operating Temperature Range Vdd = 1.5V - 3.63V, 30 mins 125 C T = -55C, Continuous Maximum Continuous Operating Life at Temperature Extreme A 8 Hours (meeting datasheet limits) Vdd = 1.8V 3.3V 10% Human Body Model ESD Protection JESD22-A114 3000 V Charge-Device Model (CDM) ESD Protection JESD22-C101 750 V Machine Model (MM) ESD Protection JESD22-A115 300 V Latch-up Tolerance JESD78 Compliant Mechanical Shock Resistance Mil 883, Method 2002 10,000 g Mechanical Vibration Resistance Mil 883, Method 2007 70 g 2012 SMD Junction Temperature 150 C SOT23-5 Junction Temperature 150 C Storage Temperature -65C to 150C Rev 1.3 Page 2 of 9 www.sitime.com