SiT1533 20 ppm, Ultra-Low Power 32.768 kHz Quartz XTAL Replacement Smallest (1.2mm2), Ultra-Low Power, 32.768 kHz MEMS TCXO Features Applications Small SMD package: 2.0 x 1.2 mm (2012) [1] Pin-compatible to 2012 XTAL SMD package Fixed 32.768 kHz output frequency <20 ppm frequency tolerance Ultra-low power: <1 A Supports coin-cell or super-cap battery backup voltages Vdd supply range: 1.5V to 3.63V over -40C to +85C Oscillator output eliminates external load caps Internal filtering eliminates external Vdd bypass cap NanoDriveTM programmable output swing for lowest power Pb-free, RoHS and REACH compliant Mobile Phones Tablets Health and Wellness Monitors Fitness Watches Sport Video Cams Wireless Keypads Ultra-Small Notebook PC Pulse-per-Second (pps) Timekeeping RTC Reference Clock Battery Management Timekeeping Note: 1. For the smallest 32 kHz XO in CSP (1.2 mm2), consider the SiT1532. Electrical Specifications Table 1. Electrical Characteristics Parameter Symbol Min. Typ. Max. Unit Condition Frequency and Stability Fixed Output Frequency Fout 32.768 kHz Frequency Stability Frequency Tolerance [2] F_tol 20 ppm [3] 100 F_stab Frequency Stability ppm -1 1 TA = -40C to +85C, Vdd: 1.5V - 3.63V. TA = -10C to +70C, Vdd: 1.2V - 1.5V. 250 25C Aging TA = 25C, post reflow, Vdd: 1.5V - 3.63V. TA = -10C to +70C, Vdd: 1.5V - 3.63V. 75 ppm 1st Year Supply Voltage and Current Consumption Operating Supply Voltage Vdd 1.2 3.63 V TA = -10C to +70C 1.5 3.63 V TA = -40C to +85C 1.3 A TA = 25C, Vdd: 1.8V. No load 0.90 Core Operating Current [4] Idd Output Stage Operating Current [4] Idd_out 0.065 t_Vdd_ Ramp Power-Supply Ramp [5] Start-up Time at Power-up 180 t_start 0.125 A/Vpp 100 ms 300 450 TA = -10C to +70C, Vdd max: 3.63V. No load TA = -40C to +85C, Vdd max: 3.63V. No load 1.4 ms TA = -40C to +85C, Vdd: 1.5V - 3.63V. No load TA = -40C to +85C, 0 to 90% Vdd TA = -40C TA +50C, valid output TA = +50C < TA +85C, valid output Operating Temperature Range Commercial Temperature Industrial Temperature T_use -10 70 C -40 85 C 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. Stability is specified for two operating voltage ranges. Stability progressively degrades with supply voltage below 1.5V. Measured peak -to-peak. Inclusive of Initial Tolerance at 25C, and variations over operating temperature, rated power supply voltage and load. 4. Core operating current does not include output driver operating current or load current. To derive total operating current (no load), add core operating current + (0.065 A/V) * (peak-to-peak output Voltage swing). 5. Measured from the time Vdd reaches 1.5V. Rev 1.4 March 20, 2018 www.sitime.com SiT1533 20 ppm, Ultra-Low Power 32.768 kHz Quartz XTAL Replacement Table 1. Electrical Characteristics (continued) Parameter Symbol Min. Typ. Max. Unit Condition LVCMOS Output Option, TA = -40C to +85C, typical values are at TA = 25C 100 Output Rise/Fall Time 200 tr, tf DC 48 Output Voltage High VOH 90% Output Voltage Low VOL Output Clock Duty Cycle Output Rise/Fall Time tf, tf Output Clock Duty Cycle DC AC-coupled Programmable Output Swing V_sw DC-Biased Programmable Output Voltage High Range VOH DC-Biased Programmable Output Voltage Low Range Programmable Output Voltage Swing Tolerance Period Jitter ns 52 % 10% 10-90% (Vdd), 5 pF load, Vdd 1.62V V Vdd: 1.5V - 3.63V. IOH = -10 A, 15 pF V Vdd: 1.5V - 3.63V. IOL = 10 A, 15 pF NanoDriveTM Programmable, Reduced Swing Output 200 ns 30-70% (VOL/VOH), 10 pF Load 48 52 % 0.20 to 0.80 0.60 to 1.225 0.35 to 0.80 VOL -0.055 T_jitt 10-90% (Vdd), 15 pF load, Vdd = 1.5V to 3.63V 50 0.055 V SiT1533 does not internally AC-couple. This output description is intended for a receiver that is AC-coupled. See Table 2 for acceptable NanoDrive swing options. Vdd: 1.5V - 3.63V, 10 pF Load, IOH / IOL = 0.2 A. V Vdd: 1.5V - 3.63V. IOH = -0.2 A, 10 pF Load. See Table 1 for acceptable VOH/VOL setting levels. V Vdd: 1.5V - 3.63V. IOL = 0.2 A, 10 pF Load. See Table 1 for acceptable VOH/VOL setting levels. V TA = -40C to +85C, Vdd = 1.5V to 3.63V. nsRMS 35 Cycles = 10,000, TA = 25C, Vdd = 1.5V - 3.63V Table 2. Pin Configuration SMD Pin 1 2 3 4 Rev 1.4 Symbol NC GND CLK Out Vdd I/O No Connect Power Supply Ground Functionality SMD Package (Top View) No Connect. Will not respond to any input signal. When interfacing to an MCU's XTAL input pins, this pin is typically connected to the receiving IC's X Out pin. In this case, the SiT1533 will not be affected by the signal on this pin. If not interfacing to an XTAL oscillator, leave pin 1 floating (no connect). Connect to ground. All GND pins must be connected to power supply ground. OUT Oscillator clock output. When interfacing to an MCU's XTAL, the CLK Out is typically connected to the receiving IC's X IN pin. The SiT1533 oscillator output includes an internal driver. As a result, the output swing and operation is not dependent on capacitive loading. This makes the output much more flexible, layout independent, and robust under changing environmental and manufacturing conditions. Power Supply Connect to power supply 1.5V Vdd 3.63V for operation over -40C to +85C temperature range. Under normal operating conditions, Vdd does not require external bypass/decoupling capacitor(s). Internal power supply filtering will reject more than 150 mVpp with frequency components through 10 MHz. Contact SiTime for applications that require a wider operating supply voltage range. Page 2 of 13 Vdd 4 NC 3 1 CLK Out 2 GND Figure 1. Pin Assignments www.sitime.com SiT1533 20 ppm, Ultra-Low Power 32.768 kHz Quartz XTAL Replacement System Block Diagram MEMS Resonator NC GND Control Sustaining Amp Regulators Trim Prog Ultra-Low Power PLL Divider Vdd Prog Ultra-Low Power Driver CLK Out Figure 2. SiT1533 Block Diagram Table 3. Absolute Maximum Limits Attempted operation outside the absolute maximum ratings may cause permanent damage to the part. Actual performance of the IC is only guaranteed within the operational specifications, not at absolute maximu m ratings. Parameter Test Condition Continuous Power Supply Voltage Range (Vdd) Value Unit -0.5 to 3.63 V Short Duration Maximum Power Supply Voltage (Vdd) 30 minutes, over -40C to +85C 4.0 V Continuous Maximum Operating Temperature Range Vdd = 1.5V - 3.63V 105 C Vdd = 1.5V - 3.63V, 30 mins 125 C HBM, JESD22-A114 3000 V JESD220C101 750 V TA = 25C 300 V Short Duration Maximum Operating Temperature Range Human Body Model ESD Protection Charge-Device Model (CDM) ESD Protection Machine Model (MM) ESD Protection Latch-up Tolerance JESD78 Compliant Mechanical Shock Resistance Mil 883, Method 2002 10,000 Mechanical Vibration Resistance Mil 883, Method 2007 70 g 150 C 2012 SMD Junction Temperature Storage Temperature Rev 1.4 g -65C to 150C Page 3 of 13 www.sitime.com SiT1533 20 ppm, Ultra-Low Power 32.768 kHz Quartz XTAL Replacement Frequency Stability The SiT1533 is an ultra-small and ultra-low power 32.768 kHz oscillator optimized for mobile and other battery-powered applications. The SiT1533 is pin-compatible and footprint compatible to existing 2012 XTALs when using the SiTime solder-pad layout (SPL). And unlike standard oscillators, the SiT1533 features NanoDriveTM, a factory programmable output that reduces the voltage swing to minimize power. The SiT1533 is factory calibrated (trimmed) to guarantee frequency stability to be less than 20 ppm at room temperature and less than 100 ppm over the full -40C to +85C temperature range. Unlike quartz crystals that have a classic tuning fork parabola temperature curve with a 25C turnover point, the SiT1533 temperature coefficient is extremely flat across temperature. The device maintains less than 100 ppm frequency stability over the full operating temperature range when the operating voltage is between 1.5 and 3.63V as shown in Figure 4. Functionality is guaranteed over the 1.2V - 3.63V operating supply voltage range. However, frequency stability degrades below 1.5V and steadily degrades as it approaches the 1.2V minimum supply due to the internal regulator limitations. Between 1.2V and 1.5V, the frequency stability is 250 ppm max over temperature. When measuring the SiT1533 output frequency with a frequency counter, it is important to make sure the counter's gate time is >100ms. The slow frequency of a 32 kHz clock will give false readings with faster gate times. Contact SiTime for alternative 32 kHz product options and applications that require a wider supply voltage range >3.63V, or operating frequency below 32 kHz. The 1.2V to 3.63V operating supply voltage range makes it an ideal solution for mobile applications that incorporate a low-voltage, battery-back-up source such as a coin-cell or super-cap. SiTime's MEMS oscillators consist of MEMS resonators and a programmable analog circuit. Our MEMS resonators are built with SiTime's unique MEMS FirstTM process. A key manufacturing step is EpiSealTM during which the MEMS resonator is annealed with temperatures over 1000C. EpiSeal creates an extremely strong, clean, vacuum chamber that encapsulates the MEMS resonator and ensures the best performance and reliability. During EpiSeal, a poly silicon cap is grown on top of the resonator cavity, which eliminates the need for additional cap wafers or other exotic packaging. As a result, SiTime's MEMS resonator die can be used like any other semiconductor die. One unique result of SiTime's MEMS First and EpiSeal manufacturing processes is the capability to integrate SiTime's MEMS die with a SOC, ASIC, microprocessor or analog die within a package to eliminate external timing components and provide a highly integrated, smaller, cheaper solution to the customer. XTAL Footprint Compatibility (SMD Package) The SiT1533 is a replacement to the 32 kHz XTAL in the 2.0 x 1.2 mm (2012) package. Unlike XTAL resonators, SiTime's silicon MEMS oscillators require a power supply (Vdd) and ground (GND) pin. Vdd and GND pins are conveniently placed between the two large XTAL pins. When using the SiTime Solder Pad Layout (SPL), the SiT1533 footprint is compatible with existing 32 kHz XTALs in the 2012 SMD package. Figure 3 shows the comparison between the quartz XTAL footprint and the SiTime footprint. For applications that require the smallest footprint solution, consider the SiT1532 XO available in a 1.2mm2 CSP. Quartz SiTime X OUT Connect to X OUT or NC 1 GND 2 4 VDD 3 X IN Clock Out Connect to X IN Top View Top View SiT153x Industrial Temp Specification SiT1533 Measured SiT1533 20 ppm Max @ 25C Quartz XTAL -160 to -220 ppm Over Temp Temperature (C) Figure 4. SiTime vs. Quartz Power Supply Noise Immunity The SiT1533 is an ultra-small 32 kHz oscillator. In addition to eliminating external output load capacitors common with standard XTALs, this device includes special power supply filtering and thus, eliminates the need for an external Vdd bypass-decoupling capacitor. This feature further simplifies the design and keeps the footprint as small as possible. Internal power supply filtering is designed to reject AC-noise greater than 150 mVpp magnitude and beyond 10 MHz frequency component. Output Voltage Figure 3. SiT1533 Footprint Compatibility with Quartz XTAL Footprint[6] Note: 6. On the SiTime device, X IN is not internally connected and will not respond to any signal. It is acceptable to connect to chipset X OUT. Rev 1.4 Frequency Stability (ppm) Description The SiT1533 has two output voltage options. One option is a standard LVCMOS output swing. The second option is the NanoDrive reduced swing output. Output swing is customer specific and programmed between 200 mV and 800 mV. For DC-coupled applications, output VOH and VOL are individually factory programmed to the customers' Page 4 of 13 www.sitime.com SiT1533 20 ppm, Ultra-Low Power 32.768 kHz Quartz XTAL Replacement requirement. VOH programming range is between 600 mV and 1.225V in 100 mV increments. Similarly, VOL programming range is between 350 mV and 800 mV. For example; a PMIC or MCU is internally 1.8V logic compatible, and requires a 1.2V VIH and a 0.6V VIL. Simply select SiT1533 NanoDrive factory programming code to be "D14" and the correct output thresholds will match the downstream PMIC or MCU input requirements. Interface logic will vary by manufacturer and we recommend that you review the input voltage requirements for the input interface. For DC-biased NanoDrive output configuration, the minimum VOL is limited to 350mV and the maximum allowable swing (VOH - VOL) is 750mV. For example, 1.1V VOH and 400mV VOL is acceptable, but 1.2V VOH and 400 mV VOL is not acceptable. When the output is interfacing to an XTAL input that is internally AC-coupled, the SiT1533 output can be factory programmed to match the input swing requirements. For example, if a PMIC or MCU input is internally AC-coupled and requires an 800mV swing, then simply choose the SiT1533 NanoDrive programming code "AA8" in the part number. It is important to note that the SiT1533 does not include internal AC-coupling capacitors. Please see the Part Number Ordering section at the end of the datasheet for more information about the part number ordering scheme. Power-up The SiT1533 starts-up to a valid output frequency within 300 ms (150ms typ). To ensure the device starts-up within the specified limit, make sure the power-supply ramps-up in approximately 10 - 20 ms (to within 90% of Vdd). Start-up time is measured from the time Vdd reaches 1.5V. For applications that operate between 1.2V and 1.5V, the start-up time will be longer. Rev 1.4 Page 5 of 13 www.sitime.com SiT1533 20 ppm, Ultra-Low Power 32.768 kHz Quartz XTAL Replacement SiT1533 NanoDriveTM Figure 5 shows a typical SiT1533 output waveform (into a 10 pF load) when factory programmed for a 0.70V swing and DC bias (VOH/VOL) for 1.8V logic: The values listed in Table 4 nominal values at 25C and will exhibit a tolerance of 55 mV across Vdd and -40C to 85C operating temperature range. SiT1533 Full Swing LVCMOS Output Example: NanoDriveTM part number coding: D14. Example part number: SiT1533AI-H4-D14-32.768 VOH = 1.1V, VOL = 0.4V (Vsw = 0.70V) The SiT1533 can be factory programmed to generate fullswing LVCMOS levels. Figure 6 shows the typical LVCMOS waveform (Vdd = 1.8V) at room temperature into a 15 pF load. VOH = 1.1V VSW = 0.7V VOL = 0.4V Figure 5. SiT1533AI-H4-D14-32.768 Figure 6. LVCMOS Waveform (Vdd = 1.8V) into 15 pF Load Table 4 shows the supported NanoDriveTM VOH, VOL factory programming options. Table 4. Acceptable VOH/VOL NanoDriveTM Levels NanoDrive VOH (V) VOL (V) Swing (mV) Comments D26 1.2 0.6 600 55 1.8V logic compatible D14 1.1 0.4 700 55 1.8V logic compatible D74 0.7 0.4 300 55 XTAL compatible AA3 n/a n/a 300 55 XTAL compatible Rev 1.4 Example: LVCMOS output part number coding is always DCC Example part number: SiT1533AI-H4-DCC-32.768 Page 6 of 13 www.sitime.com SiT1533 20 ppm, Ultra-Low Power 32.768 kHz Quartz XTAL Replacement Calculating Load Current Total Supply Current with Load No Load Supply Current To calculate the total supply current, including the load, follow the equation listed below. Note the 27% reduction in power with a 1.8V logic compatible NanoDriveTM output voltage. When calculating no-load power for the SiT1533, the core and output driver components need to be added. Since the output voltage swing can be programmed for reduced swing between 300 mV and 700 mV, the output driver current is variable. Therefore, no-load operating supply current is broken into two sections; core and output driver. The equation is as follows: Total Current = Idd Core + Idd Output Driver (65nA/V*Voutpp) + + Load Current (C*V*F) Example 1: Full-swing LVCMOS Total Supply Current (no load) = Idd Core + (65nA/V)(Voutpp) Example 1: Full-swing LVCMOS Vdd = 1.8V Idd Core = 900nA (typ) Voutpp = 1.8V (LVCMOS) Supply Current = 900nA + (65nA/V)(1.8V) = 1017nA Example 2: NanoDriveTM Reduced Swing Example 2: NanoDriveTM Reduced Swing Vdd = 1.8V Idd Core = 900nA Load Capacitance = 10pF Idd Output Driver: (65nA/V)(1.8V) = 117nA Load Current: (10pF)(1.8V)(32.768kHz) = 590nA Total Current = 900nA+117nA+590nA = 1.6A Vdd = 1.8V Idd Core = 900nA (typ) Voutpp (D14) = VOH - VOL = 1.1V - 0.4V = 700mV Supply Current = 900nA + (65nA/V)(0.7V) = 946nA Vdd = 1.8V Idd Core = 900nA Load Capacitance = 10pF Voutpp (D14): VOH - VOL = 1.1V - 0.4V = 700mV Idd Output Driver: (65nA/V)(0.7V) = 46nA Load Current: (10pF)(0.7V)(32.768kHz) = 229nA Total Current = 900nA + 46nA + 229nA = 1.175A Rev 1.4 Page 7 of 13 www.sitime.com SiT1533 20 ppm, Ultra-Low Power 32.768 kHz Quartz XTAL Replacement Typical Operating Curves Number of Devices Frequency Stability (PPM) (TA = 25C, Vdd = 1.8V, unless otherwise stated) Initial Tolerance (ppm) TA = 25C Post Reflow, No underfill Figure 8. Frequency Stability over Temperature Core Current (uA) Output Stage Current (nA/Vpp) Figure 7. Frequency Stability Over Temperature (Pre-Reflow) Temperature (C) Temperature (C) Figure 10. Output Stage Current Over Temperature Voltage (V) Figure 9. Core Current Over Temperature Time (sec) Figure 11. Start-up Time Rev 1.4 Page 8 of 13 www.sitime.com 20 ppm, Ultra-Low Power 32.768 kHz Quartz XTAL Replacement Frequency Error (ppm) SiT1533 Noise Injection Frequency (Hz) Figure 12. Power Supply Noise Rejection (150mV Noise) VOH = 1.1V VSW = 0.7V VOL = 0.4V Figure 13. NanoDriveTM Output Waveform (VOH = 1.1V, VOL = 0.4V; SiT1533AI-H4-D14-32.768) Rev 1.4 Page 9 of 13 Figure 14. LVCMOS Output Waveform (Vswing = 1.8V, SiT1533AI-H4-DCC-32.768) www.sitime.com SiT1533 20 ppm, Ultra-Low Power 32.768 kHz Quartz XTAL Replacement Dimensions and Patterns Package Size - Dimensions (Unit: mm)[7] Recommended Land Pattern (Unit: mm) 2.0 x 1.2 mm SMD SiTime Only SPL #4 #4 SiTime Alternate SPL with Larger Center Pads 0.55 0.3 (2x) 0.4 0.4 (2x) #2 1.4 (2x) #2 #1 #3 0.5(2x) #3 #1 0.65 1.2 2.0 0.5(2x) XTAL Compatible SPL Note: 7. Top marking: Y denotes manufacturing origin and XXXX denotes manufacturing lot number. The value of "Y" will depend on the as sembly location of the device. Rev 1.4 Page 10 of 13 www.sitime.com SiT1533 20 ppm, Ultra-Low Power 32.768 kHz Quartz XTAL Replacement Manufacturing Guidelines 1) No Ultrasonic Cleaning: Do not subject the SiT1533 to an ultrasonic cleaning environment. Permanent damage or long term reliability issues to the MEMS structure may occur. 2) For Noisy, high EM environments, we recommend the following design guidelines: Place oscillator as far away from EM noise sources as possible (e.g., high-voltage switching regulators, motor drive control). Route noisy PCB traces, such as digital data lines or high di/dt power supply lines, away from the SiTime oscillator. Add a low ESR/ESL, 0.1uF to 1.0uF ceramic capacitor (X7R) to help filter high frequency noise on the Vdd power-supply line. Place it as close to the SiTime oscillator Vdd pin as possible. Place a solid GND plane underneath the SiTime oscillator to shield the oscillator from noisy traces on the other board layers. For details, please refer to the PCB Layout Guidelines in AN10006. 3) For additional manufacturing guidelines and marking/tape-reel instructions, refer to SiTime Manufacturing Notes. Rev 1.4 Page 11 of 13 www.sitime.com SiT1533 20 ppm, Ultra-Low Power 32.768 kHz Quartz XTAL Replacement Ordering Information Part number characters in blue represent the customer specific options. The other characters in the part number are fixed. Here are guidelines to select the correct output voltage. These are only suggestions and specific chipsets may require different output voltage settings. 1) For XTAL replacement applications that will keep the chipset oscillator enabled, configure the NanoDriveTM output for a swing similar to the XTAL, approximately 300 mV. SiT1533AI-H4-AA3-32.768 2) For XTAL replacement applications that will disable the chipset oscillator, configure the output with one of the following: For VDD = 1.8V: SiT1533AI-H4-D14-32.768 For VDD > 1.8V: SiT1533AI-H4-DCC-32.768 The following examples illustrate how to select the appropriate temp range and output voltage requirements: Example 1: SiT1533AI-H4-D14-32.768 Industrial temp & corresponding 100 ppm frequency stability. Note, 100 ppm is only available for the industrial temp range, and 75 ppm is only available for the commercial temp range. Output swing requirements: a) "D" = DC-coupled receiver b) "1" = VOH = 1.1V c) "4" = VOL = 0.4V Example 2: SiT1533AC-H5-AA2-32.768 Commercial temp & corresponding 75 ppm frequency stability. Note, 100 ppm is only available for the industrial temp range, and 75 ppm is only available for the commercial temp range. Output swing requirements: a) "A" = AC-coupled receiver b) "A" = AC-coupled receiver c) "3" = 300 mV swing Table 5. Acceptable VOH/VOL NanoDriveTM Levels[8] NanoDrive VOH (V) VOL (V) Swing (mV) D26 1.2 0.6 600 55 1.8V logic compatible D14 1.1 0.4 700 55 1.8V logic compatible D74 0.7 0.4 300 55 XTAL compatible AA3 n/a n/a 300 55 XTAL compatible Comments Note: 8. If these available options do not accommodate your application, contact Factory for other NanoDrive options. Rev 1.4 Page 12 of 13 www.sitime.com SiT1533 20 ppm, Ultra-Low Power 32.768 kHz Quartz XTAL Replacement Table 6. Revision History Version 1.0 Release Date 09/02/2014 1.1 10/14/2014 1.2 11/25/2014 1.3 01/18/2018 1.4 03/20/2018 Change Summary Rev 0.9 Preliminary to Rev 1.0 Production Release Updated start-up time specification Added typical operating plots Removed SOT23 package option Relabeled 25C frequency spec as frequency tolerance Added Manufacturing Guidelines section Improved Start-up Time at Power-up spec Added 5pF LVCMOS rise/fall time spec Updated 5pF LVCMOS rise/fall time spec Added additional design-in/mfg guidelines Added 2nd landing pattern option Updated NanoDrive section Updated logo and company address, other page layout changes Corrected an error of the Pin Assignments in Figure 1 SiTime Corporation, 5451 Patrick Henry Drive, Santa Clara, CA 95054, USA | Phone: +1-408-328-4400 | Fax: +1-408-328-4439 (c) SiTime Corporation 2014-2018. The information contained herein is subject to change at any time without notice. SiTime assumes no responsibility or liabi lity for any loss, damage or defect of a Product which is caused in whole or in part by (i) use of any circuitry other than circuitry embodied in a SiTime product, (ii) misuse or abuse including static discharge, neglect or accident, (iii) unauthorized modification or repairs which have been soldered or altered during assembly and are not capable of being tested by SiTime under its normal test conditions, or (iv) improper installation, storage, handling, warehousing or transportation, or (v) being subjected to unusual physical, thermal, or electrical stress. Disclaimer: SiTime makes no warranty of any kind, express or implied, with regard to this material, and specifically disclaims any and all express or implied warranties, either in fact or by operation of law, statutory or otherwise, including the implied warranties of merchantability and fitness for use or a particular purpose, and any implied warranty arising from course of dealing or usage of trade, as well as any common-law duties relating to accuracy or lack of negligence, with respect to this material, any SiTime product and any product documentation. Products sold by SiTime are not suitable or intended to be used in a life support application or component, to operate nuclear facilities, or in other mission critical applications where human life may be involved or at stake. All sales are made conditioned upon compliance with the critical uses policy set forth below. CRITICAL USE EXCLUSION POLICY BUYER AGREES NOT TO USE SITIME'S PRODUCTS FOR ANY APPLICATION OR IN ANY COMPONENTS USED IN LIFE SUPPORT DEVICES OR TO OPERATE NUCLEAR FACILITIES OR FOR USE IN OTHER MISSION-CRITICAL APPLICATIONS OR COMPONENTS WHERE HUMAN LIFE OR PROPERTY MAY BE AT STAKE. SiTime owns all rights, title and interest to the intellectual property related to SiTime's products, including any software, firmware, copyright, patent, or trademark. The sale of SiTime products does not convey or imply any license under patent or other rights. SiTime retains the copyright and trademark rights in all documents, catalogs and plans supplied pursuant to or ancillary to the sale of products or services by SiTime. Unless otherwise agreed to in writing by SiTime, any reproduction, modification, translation, compilation, or representation of this material shall be strictly prohibited. Rev 1.4 Page 13 of 13 www.sitime.com