Silicon Labs TS1100-25EG5 Detailed Introduction

The Silicon Labs TS1100-25EG5 is a high-performance, low phase noise, temperature-compensated crystal oscillator (TCXO) designed to deliver precise and stable frequency references in various electronic systems. It is engineered for applications requiring accurate timing and frequency control with excellent environmental stability, such as telecommunications, instrumentation, and embedded systems.

Device Overview
The TS1100-25EG5 belongs to Silicon Labs’ TS1100 series of TCXOs, which are well-known for combining high frequency stability with low power consumption and compact packaging. This oscillator provides a fixed frequency output of 25 MHz with tight frequency tolerance and excellent phase noise performance, suitable for demanding communication and timing applications.

Key Features

* Fixed output frequency: 25.000 MHz
* Temperature-compensated crystal oscillator (TCXO) for enhanced frequency stability
* Frequency stability: ±0.5 ppm over the temperature range
* Operating temperature range: –40°C to +85°C (industrial grade)
* Low phase noise performance, typically –140 dBc/Hz at 10 kHz offset
* Supply voltage: 3.3 V ± 10%
* Low current consumption: typically 8 mA at 3.3 V supply
* CMOS output compatible with 3.3 V logic levels
* Rise/fall time: typically 6 ns (20%-80%)
* Output waveform: CMOS square wave
* Output enable/disable control pin (tri-state functionality)
* Small 5 x 3.2 mm, 8-pin ceramic SMD package (EG5)
* RoHS compliant and lead-free

Electrical Specifications

* Frequency (f\_o): 25 MHz nominal
* Frequency Stability: ±0.5 ppm over –40°C to +85°C
* Supply Voltage (V\_DD): 3.3 V ± 10%
* Supply Current (I\_DD): Typical 8 mA at 3.3 V
* Output Voltage High (V\_OH): Minimum 90% of V\_DD
* Output Voltage Low (V\_OL): Maximum 10% of V\_DD
* Phase Noise: –140 dBc/Hz typical at 10 kHz offset
* Start-up Time: Maximum 10 ms
* Output Load: 15 pF typical
* Enable/Disable Pin Input Voltage Threshold: V\_IL max 0.8 V, V\_IH min 2.0 V

Functional Description
The TS1100-25EG5 integrates a high-quality quartz crystal with a temperature compensation circuit and a CMOS output stage. The internal compensation circuitry corrects frequency drift caused by temperature variations, ensuring exceptional stability across the full industrial temperature range.

The oscillator provides a clean, low jitter, and stable CMOS output signal at 25 MHz. It also features an output enable/disable function controlled by a dedicated input pin, allowing the output to be tri-stated when disabled for power saving or bus sharing applications.

Applications

* Telecommunications infrastructure equipment requiring precise frequency references
* Network synchronization and timing circuits
* Wireless communication devices
* GPS and navigation systems
* Industrial automation and control systems
* Test and measurement instruments
* Embedded systems requiring accurate clock sources
* Audio and video synchronization circuits

Package and Mechanical Information
The TS1100-25EG5 comes in a compact 8-pin ceramic SMD package measuring 5.0 mm x 3.2 mm. This EG5 package is designed for surface mounting on printed circuit boards, offering excellent mechanical robustness and thermal conductivity. The small footprint supports high-density PCB layouts in space-constrained designs.

Reliability and Environmental Compliance
The device is qualified for industrial temperature range operation and complies with RoHS standards, ensuring it is free from hazardous substances. The ceramic package provides superior protection against environmental factors, enhancing long-term reliability and performance stability.

Summary
The Silicon Labs TS1100-25EG5 is a high-precision, low phase noise, 25 MHz TCXO optimized for industrial and communication applications requiring excellent frequency stability and low power consumption. Its compact ceramic SMD package, integrated temperature compensation, and output enable control make it a versatile oscillator solution for a broad range of timing-critical electronic systems. Its robust electrical characteristics and environmental compliance ensure reliable performance in demanding operating conditions.