Ultra-Small µPower, ±5 to ±20 ppm, 32.768 kHz TCXO

SiTime's TempFlat MEMS technology enables the first 32 kHz TCXO in a 1.2mm2 chip-scale package, the world's smallest footprint. Typical core supply current is only 1 μA. And unlike standard oscillators, the SiT1552 features NanoDrive™, a factory-programmable output that reduces voltage swing to minimize power. The SiT1552 is factory calibrated over multiple temperature points to guarantee extremely tight frequency stability from ±5 ppm to ±20 ppm (initial and over temperature).

Video Demo: The SiT1552 is placed in temperature chamber that increases temp. from < -40 to +85 °C at a fast ramp rate of 4 degrees per second.

View related products: 1 Hz to 2.5 MHz2.5 ns phase jitter±3 ppm

World's smallest TCXO in tiny 1508 chip-scale package, consumes only 1.2 mm2 board space
Oscillator Type 32kHz TCXO
Frequency 32.768 kHz
Frequency Stability (ppm) ±5, ±10, ±20
Output Type LVCMOS, NanoDrive™
NanoDrive™ 300mV to 700mV, full swing LVCMOS
Operating Temperature Range (°C) -0 to +70, -40 to +85
Voltage Supply (V) 1.5 to 3.63
Package Type (mm²) 1.5x0.8
Features Smallest size
Availability Production

±10 ppm all-inclusive frequency stability

  • Improved local timekeeping and improved system power with less dependency on network timekeeping updates with mobile and wearable devices

Smallest footprint in chip-scale (CSP)

  • 1.5 x 0.8 mm: Saves board space

NanoPower: 990 nA (typ.)

  • Maximizes battery life

NanoDrive™ reduced swing oscillator output

  • Programmable output swing minimizes power

Internal VDD supply filtering

  • Eliminates external VDD bypass capacitor to maintain ultra-small footprint


  • Smart meters (AMR)
  • Health and wellness monitors
  • Pulse-per-second (PPS) timekeeping
  • Medical electronics
  • Retail electronics
  • Long-range communications
  • Machine to machine (M2M)
  • Asset tracking
  • Smart farming
  • Smart city
  • Smartwatch
  • Fitness tracker
  • Home appliances

Narrow By:

Document Name Type
WLCSP Package Composition Report (SiT15XX, SiT8021) Composition Reports
Electronics Industry Citizen Coalition Template Other Quality Documents
Manufacturing Notes for SiTime Products Other Quality Documents
SiTime Conflict Metal Declaration Other Quality Documents
SiTime Environmental Policy Other Quality Documents
SiTime Warranty on Date Code (16.72 kB) Other Quality Documents
ISO9001:2015 Certificate of Registration Other Quality Documents
Conflict Minerals Reporting Template Other Quality Documents
SiTime Oscillator Reliability Report (0.18 micron CMOS process products) Reliability Reports
SiT1552 Product Qualification Report Reliability Reports
SiT153X, SiT1552, SiT163X Product Qualification Report Reliability Reports
TSMC Wafer SGS Report RoHS/Reach/Green Certificates
Tower Jazz Wafer SGS Report RoHS/Reach/Green Certificates
BOSCH Wafer SGS Report RoHS/Reach/Green Certificates
WLCSP Package Homogeneous Materials and SGS Report RoHS/Reach/Green Certificates
SiTime Environmental Compliance Declaration RoHS/Reach/Green Certificates
Certificate of Compliance-EU RoHS Declaration RoHS/Reach/Green Certificates

SiT6098 (1508) Evaluation Board User Manual – Evaluate oscillator performance

Reliability Calculator Get FIT/MTBF data for various operating conditions

CSP 1508 4-Pins 3D Step Model – Preview oscillator packages in 3D

Narrow By:

Resource Name Type
Silicon MEMS Reliability and Resilience Presentations
Performance Comparison: Silicon MEMS Verses Quartz Oscillators Presentations
How to Measure Clock Jitter in Precision Timing Applications Presentations
How to Measure Phase Jitter and Phase Noise in Precision Timing Applications Presentations
Silicon MEMS vs Quartz Supply Chain Presentations
SiT1552 32kHz TCXO FAQs FAQs
Extending Battery Life of Wireless Medical Devices White Papers
MEMS Oscillators: Enabling Smaller, Lower Power Wearables White Papers
Silicon MEMS Oscillators Provide Benefits for LED Lighting White Papers
MEMS Timekeeper Extends Standby Life of Mobile Devices White Papers
MEMS Timing Solutions Improve Touchscreen Devices White Papers
MEMS oscillators improve reliability and system performance in motor control applications White Papers
MEMS-Based Resonators and Oscillators are Now Replacing Quartz Presentations
Getting In Touch with MEMS: The Electromechanical Interface Presentations
Smart Clocking Techniques Extend Battery Life of Wearables Presentations
SiT1552 Datasheet Datasheets
AN10002 Termination Recommendations for Single-ended Oscillator Driving Single or Multiple Loads Application Notes
J-AN10006 発振器のPCBデザインのガイドライン Application Notes
AN10006 Best Design and Layout Practices Application Notes
AN10007 Clock Jitter Definitions and Measurement Methods Application Notes
J-AN10007 クロックジッタの定義と測定方法 Application Notes
SiTime発振器の信頼性計算方法 Technology Papers
AN10025 Reliability Calculations for SiTime Oscillators Application Notes
J-AN10028 プローブを使用した発振器の出力波形計測方法 Application Notes
AN10028 Probing Oscillator Output Application Notes
MEMSおよび水晶ベース発振器の電磁場感受率の比較 Technology Papers
Electromagnetic Susceptibility Comparison of MEMS and Quartz-based Oscillators Technology Papers
MEMS発振器と水晶発振器の性能比較(耐衝撃と耐振動) Technology Papers
Shock and Vibration Comparison of MEMS and Quartz-based Oscillators Technology Papers
J-AN10033 発振器の周波数測定ガイドライン Application Notes
AN10033 Frequency Measurement Guidelines for Oscillators Application Notes
J-AN10037 低消費電力MCUの32 kHz発振動作モードに対する SiT15xx製品の最適なドライブ出力設定 Application Notes
AN10037 Optimized SiT15xx Drive Settings for 32 kHz Inputs of Low Power MCUs Application Notes
J-AN10043 SiT15xxシリーズ(32 kHz発振器)の測定ガイドライン Application Notes
AN10043 Measurement Guidelines for 32 kHz SiT15xx Oscillators Application Notes
シリコンMEMS発振器の耐性および信頼性 Technology Papers
Resilience and Reliability of Silicon MEMS Oscillators Technology Papers
J-AN10046 32 kHz Nano-Power MEMS 発振器による複数負荷駆動 Application Notes
AN10046 Driving Multiple Loads with 32 kHz Nano-Power MEMS Oscillators Application Notes
SiTimeの MEMS First™ プロセス技術 Technology Papers
SiTime's MEMS First™ and EpiSeal™ Processes Technology Papers
The top 8 reasons to use an oscillator instead of a crystal resonator White Papers
MEMS Resonator Advantages - How MEMS Resonators Work Part 2 Presentations
How to Measure Long-term Jitter and Cycle-to-cycle Jitter in Precision Timing Applications Presentations
Silicon MEMS Oscillator Frequency Characteristics and Measurement Techniques Presentations
AN10052 IEEE 1588 Precision Time Protocol (PTP) in ITU-T Standards Application Notes
SC-AN10007 时钟抖动定义与测量方法 Application Notes
SC-AN10033 振荡器频率测量指南 Application Notes
AN10062 Phase Noise Measurement Guide for Oscillators Application Notes
Phase Noise Measurement Tutorial Videos
Phase Noise Measurement Tutorial (Download MP4 Video) Videos
PCI Express Refclk Jitter Compliance using a Phase Noise Analyzer Presentations
Advantages of MEMS Timing - Parameters (Download MP4 Video) Videos
Silicon Replaces Quartz (Chinese Subtitles) (Download MP4 Video) Videos
Silicon Replaces Quartz (Japanese Subtitles) (Download MP4 Video) Videos
SiT1552 32 kHz TCXO Stability over Temperature (Download MP4 Video) Videos
SiTime MEMS Oscillators - Revolutionizing the Timing Market (Download MP4 Video) Videos
SiTime MEMS Oscillators and Clock Generators at Electronics Summit (Download MP4 Video) Videos
Training Module: Replacing Crystals with Oscillators (Download MP4 Video) Videos
How SiTime Saves Space for IOT, Wearable, and Mobile Applications Videos
How SiTime Saves Space for IOT, Wearable, and Mobile Applications (Download MP4 Video) Videos
CSP 1508 4-Pins 3D Step Models
SiTime MEMS Timing Solutions (8.5x11) Brochures/Fliers
SiTime MEMS Timing Solutions (A4) Brochures/Fliers
SiTime MEMS Timing Solutions (A4) Chinese Brochures/Fliers
Timing Solutions for Mobile & IoT Brochures/Fliers
SiT6098EBB Evaluation Board User Manual User Manuals
Silicon Replaces Quartz (Japanese Subtitles) Videos
Silicon Replaces Quartz (Chinese Subtitles) Videos
Smart Meters Application Briefs
SiT1552 (LVCMOS, 1.5 V) IBIS Models
SiT1552 (LVCMOS, 1.8 V) IBIS Models
SiT1552 (LVCMOS, 3.3 V) IBIS Models
SiTime MEMS First 工艺 Technology Papers