SiT1579AC-J3-33 E-1075.20000

SiT1579 1.2 mm2 µPower, Low-Jitter, 1 Hz – 2.5 MHz Oscillator Features ◼ ◼ ◼ ◼ ◼ ◼ ◼ ◼ Applications 1 Hz to 2.5 MHz ±50 ppm all-inclusive frequency stability Factory programmable output frequency World’s smallest Oscillator Footprint: 1.2 mm2 ▪ 1.5 x 0.8 mm CSP ▪ No external bypass cap required Improved stability reduces system power with fewer network timekeeping updates Ultra-low power: 6 µA (100 kHz) Supply voltage range: 1.62 V to 3.63 V Operating temperature ranges: -20°C to +70°C, -40°C to +85°C Pb-free, RoHS and REACH compliant ◼ ◼ ◼ ◼ ◼ Health and wellness monitors Smart pens ULP input devices Proprietary wireless Sensor interface Electrical Characteristics Table 1. Electrical Characteristics Conditions: Min/Max limits are over temperature, VDD = 1.8 V ±10%, unless otherwise stated. Typicals are at 25°C and VDD = 1.8 V. Parameter Symbol Min. Typ. Max. Unit Condition Frequency and Stability Output Frequency FOUT 1 2.5 M Hz Initial Frequency Tolerance F_tol -10 10 ppm Includes 2x reflow F_stab -50 50 ppm All inclusive of over temperature, referenced to nominal frequency at 25°C, inclusive of VDD, aging, and load Frequency Stability Jitter Performance Integrated Phase Jitter IPJ 2 3.5 nsRMS RMS Period Jitter PJ 2.2 4.5 nsRMS Operating Supply Voltage VDD FOUT > 1 kHz. Integration bandwidth = 100 Hz to FOUT /2. Inclusive of 50 mV peak-to-peak sinusoidal noise on VDD. Noise frequency 100 Hz to 20 MHz Cycles = 10,000, f = 100 kHz. Per JEDEC standard 65B, tested at 100 kHz. See performance plot for other frequencies. Supply Voltage and Current Consumption No Load Supply Current Start-up Time at Power-up 1.62 IDD t_start 3.63 3.65 5 4.5 5.5 6 7 13 16 33 40 150 300 300 + 2.0 cycles 300 + 2.5 cycles V FOUT = 1 Hz FOUT = 33 kHz FOUT = 100 kHz µA FOUT = 1 MHz FOUT = 2 MHz ms 500 + 3 cycles Measured when supply reaches 90% of final VDD to the first output pulse and within specified min/max frequency limit. 10 Hz < FOUT ≤ 200 Hz, to first output pulse. Measured when supply reaches 90% of final VDD to the first output pulse and within specified min/max frequency limit. 1 Hz ≤ FOUT ≤ 10 Hz, to first output pulse. Measured when supply reaches 90% of final VDD to the first output pulse and within specified min/max frequency limit. Operating Temperature Range Operating Temperature Range Op_Temp -20 70 °C “C” ordering code -40 85 °C “I” ordering code LVCMOS Output Output Rise/Fall Time tR, tF Output Clock Duty Cycle DC 45 9 Output Voltage High VOH 90% Output Voltage Low VOL 20 ns 55 % 10% 20-80%, 15 pF load, VDD = 1.8 V ±10% VDD IOH = -50 µA, 15 pF load VDD IOL = 50 µA, 15 pF load Note: 1. Includes initial tolerance, over temp stability, 2x reflow, VDD range, board-level underfill, and 20% load variation. Tested with Agilent 53132A frequency counter. Measured with ≥100 ms gate time for accurate frequency measurement. Rev 1.11 29 March 2021 www.sitime.com SiT1579 1.2 mm2 µPower, Low-Jitter, 1 Hz – 2.5 MHz Oscillator Table 2. Pin Configuration Pin Symbol I/O 1 NC Internal Test 2 CLK Out OUT 3 VDD Power Supply 4 GND Top View Functionality No Connect. Leave floating. Pin 1 is for internal testing and is designed to be left floating. NC 1 4 GND CLK Out 2 3 Vdd Oscillator clock output. Power Supply Ground Operates from nominal supply voltages between 1.8 V and 3.3 V. Under normal operating conditions, VDD does not require external bypass/decoupling capacitor(s). SiT1579 includes on-chip VDD filtering. Connect to ground. Figure 1. Pin Assignment Table 3. Absolute Maximum Ratings 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 maximum ratings. Parameters Test Conditions Value Continuous Power Supply Voltage Range (VDD) Continuous Maximum Operating Temperature Range Unit -0.5 to 4.0 V 105 °C ≤ 30 minutes 125 °C Human Body Model (HBM) ESD Protection JESD22-A114 2000 V Charge-Device Model (CDM) ESD Protection JESD22-C101 750 V Machine Model (MM) ESD Protection JESD22-A115 300 V g Short Duration Maximum Operating Temperature Range Latch-up Tolerance JESD78 Compliant Mechanical Shock Resistance Mil 883, Method 2002 20,000 Mechanical Vibration Resistance Mil 883, Method 2007 70 g 150 °C -65 to 150 °C 1508 CSP Junction Temperature Storage Temperature System Block Diagram GND Temp Control NVM Temp-to-Digital Prog Prog Driver NC CLK Out Figure 2. SiT1579 Block Diagram Rev 1.11 Page 2 of 8 www.sitime.com SiT1579 1.2 mm2 µPower, Low-Jitter, 1 Hz – 2.5 MHz Oscillator Description Frequency Stability SiT1579 is an ultra-small and ultra-low power Factory programmable oscillator with an output frequency range between 1 Hz to 2.5 MHz. SiTime’s silicon MEMS technology enables the first programmable, µPower oscillator in the world’s smallest footprint and chip-scale packaging (CSP). Typical supply current is only 6 µA (100 kHz). The SiT1579 oscillator is Factory trimmed to 32.768 kHz at room temperature. The result is a very accurate oscillator at room temperature and over temperature. Unlike quartz crystals that have a classic tuning fork parabola temperature curve with a 25°C turnover point with a 0.04 to 0.06 ppm/°C2 temperature coefficient (TCF), the SiT1579 temperature coefficient is calibrated at room temperature and corrected over temperature with an active temperature correction circuit. The result is 100 ms. Shorter gate times may lead to inaccurate measurements. Page 3 of 8 www.sitime.com SiT1579 1.2 mm2 µPower, Low-Jitter, 1 Hz – 2.5 MHz Oscillator Typical Operating Curves (TA = 25°C, VDD = 1.8 V, supply current plots are no load, unless otherwise stated) Internal Caps Charging Logic Start-up NVM Read OSC Start-up Temperature Compensation (13 µA) 350ms Steady State 33 kHz 4.5 Figure 4. Start-up and Steady-State Current Profile Figure 3. LVCMOS Output Swing (VDD = 1.8 V) 4.5 FOUT = 33 kHz 4.3 No Vdd bypass Current (µA) 4.1 VDD = 3.3 V 3.9 3.7 VDD = 1.8 V 10 nF Vdd bypass 3.5 3.3 -40 -20 0 20 40 60 80 100 Temperature (°C) Figure 6. Supply Current vs Temperature (FOUT = 1 Hz) Figure 5. Power Supply Noise Rejection 5 8 4.9 7.75 7.5 4.8 VDD = 3.3 V 7.25 7 VDD = 3.3 V 4.6 Current (µA) Current (µA) 4.7 4.5 4.4 4.3 VDD = 1.8 V 4.2 6.5 6.25 6 5.75 VDD = 1.8 V 5.5 4.1 5.25 4 5 -40 -20 0 20 40 60 80 100 -40 -20 0 20 40 60 80 100 Temperature (°C) Temperature (°C) Figure 7. Supply Current vs Temperature (FOUT = 100 Hz) Rev 1.11 6.75 Figure 8. Supply Current vs Temperature (FOUT = 100 kHz) Page 4 of 8 www.sitime.com SiT1579 1.2 mm2 µPower, Low-Jitter, 1 Hz – 2.5 MHz Oscillator Typical Operating Curves (continuous) (TA = 25°C, Vdd = 1.8 V, supply current plots are no load, unless otherwise stated) 18 32.5 31 17.25 29.5 16.5 VDD = 3.3 V 26.5 25 15 23.5 Current (µA) 14.25 Current (µA) VDD = 3.3 V 28 15.75 13.5 12.75 12 22 20.5 19 17.5 VDD = 1.8 V 16 11.25 14.5 10.5 VDD = 1.8 V 13 9.75 11.5 10 9 -40 -20 0 20 40 60 80 -40 100 -20 0 20 40 60 80 100 Temperature (°C) Temperature (°C) Figure 9. Supply Current vs Temperature (FOUT = 500 kHz) Figure 10. Supply Current vs Temperature (FOUT = 1 MHz) 64 57 61 55 53 58 VDD = 3.3 V 51 VDD = 3.3 V 55 49 52 49 45 Current (µA) Current (µA) 47 43 41 39 37 43 40 37 35 33 34 31 VDD = 1.8 V 29 VDD = 1.8 V 31 28 27 25 25 -40 -20 0 20 40 60 80 100 -40 Temperature (°C) -20 0 20 40 60 80 100 Temperature (°C) Figure 11. Supply Current vs Temperature (FOUT = 1.85 MHz) Rev 1.11 46 Figure 12. Supply Current vs Temperature (FOUT = 2 MHz) Page 5 of 8 www.sitime.com SiT1579 1.2 mm2 µPower, Low-Jitter, 1 Hz – 2.5 MHz Oscillator Dimensions and Patterns Package Size – Dimensions (Unit: mm) Recommended Land Pattern (Unit: mm) #4 #3 #2 #1 (soldermask openings shown with dashed line around NSMD pad) Recommended 4-mil (0.1mm) stencil thickness Manufacturing Guidelines 1) No Ultrasonic or Megasonic cleaning: Do not subject SiT1579 to an ultrasonic or megasonic cleaning environment. Permanent damage or long term reliability issues may occur. 2) Applying board-level underfill and overmold is acceptable and will not impact the reliability of the device. 3) Reflow profile, per JESD22-A113D. Rev 1.11 4) The SiT1579 CSP includes a protective, opaque polymer top-coat. If the SiT1579 will see intense light, especially in the 1.0-1.2 µm IR spectrum, we recommend a protective “glob-top” epoxy or other cover to keep the light from negatively impacting the frequency stability. 5) For additional manufacturing guidelines and marking/tape-reel instructions, refer to SiTime Manufacturing Notes. Page 6 of 8 www.sitime.com SiT1579 1.2 mm2 µPower, Low-Jitter, 1 Hz – 2.5 MHz Oscillator Ordering Information SiT1579AI-J3-XXE-XXXX.XXXXXXQ Part Family Packaging “SiT1579” “S”: 8 mm Tape & Reel, 10 ku reel “Q”: 8 mm Tape & Reel, 5 ku reel “D”: 8 mm Tape & Reel, 3 ku reel “E”: 8 mm Tape & Reel, 1 ku reel Samples in cut Tape Revision Letter “A”: is the revision Temperature Range Output Frequency “C”: Extended Commercial, -20 to 70ºC “I”: lndustrial, -40 to 85ºC Continuous frequency options from 1 Hz to 2.5 MHz Enter your desired frequency as shown below: 2500.000000 = 2.5 MHz 2000.000000 = 2.0 MHz 1850.000000 = 1.85 MHz 0512.288000 = 512.288 kHz 0010.000000 = 10.0 kHz 0004.096000 = 4.0960 kHz 0000.100256 = 100.256 Hz 0000.010000 = 10.0 Hz 0000.001000 = 1.0 Hz 0000.001100 = 1.10 Hz 0000.005123 = 5.123 Hz Package Size “J”: 1.5 mm x 0.8 mm CSP All-Inclusive Over Temp Stability “3”: ±50 ppm Supply Voltage XX = 1.8 V – 3.3 V 18 = 1.8 V 20 = 2.0 V 25 = 2.5 V 30 = 3.0 V 33 = 3.3 V Rev 1.11 Page 7 of 8 www.sitime.com SiT1579 1.2 mm2 µPower, Low-Jitter, 1 Hz – 2.5 MHz Oscillator Table 4. Revision History Version Release Date 0.9 9-May-2017 Initial Preliminary Datasheet Release 0.95 12-Jun-2017 Updated start-up time typical value 1.0 3-Aug-2017 Final Release Increased maximum output frequency option Added additional typical operating curves Updated typical No Load Supply Current (Table 1) 1.1 22-Jan-2018 29-Mar-2021 Updated the maximum frequency from 2.0 MHz to 2.5 MHz 1.11 Change Summary Added Option “D” for 3ku reels to the Ordering Information Updated hyperlinks, trademarks, date format and layout formatting SiTime Corporation, 5451 Patrick Henry Drive, Santa Clara, CA 95054, USA | Phone: +1-408-328-4400 | Fax: +1-408-328-4439 © SiTime Corporation 2017-2021. The information contained herein is subject to change at any time without notice. SiTime assumes no responsibility or liability 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 1.11 Page 8 of 8 www.sitime.com