IC-Mart Your Trusted Source for Clock Generators & Support Products Chips

(from leading manufacturers)

Leading Manufacturers and Representative Models

1. Texas Instruments (TI)

TI offers a massive portfolio ranging from low-power industrial to high-performance base station applications.

• General/Low-Power Series:
  • CDCE913 / CDCE925: Popular low-cost, programmable generators for consumer electronics.
  • CDCE6214: High-efficiency, ultra-low-power generator for space-constrained designs.
• High-Performance/Network Sync (LMK Series):
  • LMK03328: Ultra-low jitter generator with dual PLLs.
  • LMK05318B: BAW (Bulk Acoustic Wave) technology for 400G networks.
  • LMK5B33216: High-performance synchronizer for wireless communication.
• RF & High-Speed Distribution (LMX/CDC Series):
  • LMX2820: Wideband RF synthesizer supporting up to 22.6 GHz.
  • CDCDB2000: High-speed buffer compatible with PCIe Gen 1-6.

2. Renesas (Formerly IDT)

Renesas became a timing leader after acquiring IDT. Its VersaClock and FemtoClock lines are industry standards.

• VersaClock® Programmable Series:
  • 5P49V5901 / 5P49V6901: Highly flexible benchmark models with 4 outputs.
  • VersaClock 7: Latest generation of high-performance programmable clocks.
• Application-Specific/PCIe Series:
  • 9DBL0452 / 9DBL0851: Low-power, zero-delay buffers designed for PCIe protocols.
• High-Performance/Network Series:
  • 8T49N241 (FemtoClock NG): Universal frequency converter with ultra-low jitter (<150fs).
  • ClockMatrix™: Large-scale synchronization for 5G and core networks.

3. Skyworks Solutions (Formerly Silicon Labs Timing)

Skyworks uses patented MultiSynth technology to generate any frequency from a single source.

• Any-Frequency Generators:
  • Si5351A/B/C: Cost-effective I2C programmable generators with up to 8 outputs.
  • Si5341 / Si5340: High-performance clocks for complex system cores.
• Jitter Attenuation & Sync:
  • Si5391: Premium jitter attenuators for data centers and high-end switches.
  • Si5345: Jitter cleaning for Ethernet synchronization.

4. Analog Devices (ADI / Including Maxim)

ADI excels in high-performance analog and precision timing for radar and instrumentation.

• Precision Timing & Distribution:
  • AD9522 / AD9528: Multi-output distributors supporting JESD204B/C for ADC/DAC sampling.
  • AD9545: Dual-channel DPLL digital synchronizer.
• RF Timing (HMC Series):
  • HMC7044: High-performance jitter attenuator for 3.2 GHz distribution.
• EMI & Spread Spectrum (Formerly Maxim):
  • DS1086L: Classic spread-spectrum generator for EMI compliance.

5. Microchip (Including Micrel/Microsemi)

Microchip provides a comprehensive range, including atomic clocks and high-reliability industrial ICs.

• Industrial Grade (PL/SY Series):
  • PL133 / PL123: Low-power clock buffers and drivers.
  • SY89831 / SY89872: High-speed differential drivers (LVPECL/LVDS).
• Network Sync:
  • ZL30161: Specialized PLL for communication network synchronization.

6. SiTime (MEMS Specialist)

SiTime leads the MEMS (Micro-Electro-Mechanical Systems) timing market with all-silicon, vibration-resistant products.

• MEMS Programmable Oscillators:
  • SiT8008 / SiT8021: Low-power, fully programmable MEMS oscillators.
  • SiT9120: High-stability differential generators for networking.
  • SiT5356 (Super-TCXO): Precision timing with ultra-tight temp control (±0.1 ppm).

Key Chinese Manufacturers and Representative Models

1. Aura Semiconductor

Aura leads in high-performance jitter attenuators and multi-output generators for 5G and data centers.

• AU5061 / AU5062: High-performance jitter attenuators with up to 12 outputs; competes with Skyworks Si534x.
• AU53xx: Sync clocks for SyncE and IEEE 1588.
• Market Position: Replaces Skyworks (Si53xx) and Renesas (FemtoClock).

2. DAPU Telecom

Specializes in timing and synchronization for communication infrastructure.

• INS6310: High-performance, low-jitter differential fan-out buffer.
• ACS9520 / ACS9522: Sync ICs for IEEE 1588v2.
• RTC Series (INS8900): Automotive-grade high-precision RTC with built-in TCXO.
• Market Position: Replaces TI (LMK series) and Microchip (Zarlink).

3. AnalogySemi

Focuses on high-performance analog signal chains and timing.

• AL Clock Series: Includes ultra-low jitter generators.
• Clock Buffers: P2P (pin-to-pin) compatible high-speed distribution ICs.
• Market Position: Industrial control, medical imaging, and high-end audio.

4. 3PEAK

A versatile signal chain provider focusing on industrial and consumer timers.

• TPL5010 / TPL5110: Ultra-low power system timers (TI P2P replacement).
• TPL1xxx: High-speed clock buffers.
• Market Position: General industrial and consumer power control.

5. Novosense

Specializes in industrial and automotive-grade timing with isolation features.

• NSi Series: Isolated clock drivers.
• MEMS Clocks: Silicon-based alternatives to traditional quartz.
• Market Position: New energy vehicles and industrial automation.

6. RunIC

Provides cost-effective, high-volume general-purpose clock support ICs.

• RS9112C / RS9114C: LVCMOS clock buffers (1:2 and 1:4).
• RS1C1108: 8-output clock driver.
• Market Position: Replaces TI (CDCV series) and Renesas (74FCT series).

Chinese Manufacturer Summary Table

Manufacturer	Core Advantages	Western Alternatives	Application Domains
Aura Semi	High-end jitter attenuation, Any-Freq generators	Skyworks, Renesas	Base stations, core routers, optical net
DAPU Telecom	Network sync (1588), High-precision RTC	TI, Microsemi	Telecom infrastructure, Power grids
3PEAK/RunIC	General buffers, Timers	TI, ON Semi, NXP	Industrial boards, consumer electronics
AnalogySemi	Low-phase noise generators, High-perf buffers	ADI, TI	Instrumentation, Medical devices
Novosense	Automotive/Industrial isolated drivers	Silicon Labs, TI	EV OBC/DCDC, Servo drives

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Understanding Clock Generators & Support Products

These ICs manage every aspect of “Time” and “Frequency” within a system:

• Generate: Uses quartz or MEMS to create stable high-frequency square waves (e.g., 25MHz).
• Synthesis: Uses PLLs to convert a reference frequency into specific speeds needed by CPUs (3.2GHz) or PCIe (100MHz).
• Distribution/Buffer: Distributes a high-quality clock source to multiple chips without phase delay or distortion.
• Jitter Attenuation: Removes timing “noise.” In high-speed systems, even picosecond-level deviations can cause data failure.
• Translation: Converts clock signals between different logic levels (e.g., LVDS to CMOS).

Typical Application Scenarios

1. Data Center & Computing: Drives high-performance processors and PCIe 5.0/6.0 interfaces. Stability is critical for data transfer between CPUs and NVMe drives.
2. 5G Communication: SyncE and IEEE 1588 standards require nanosecond-level accuracy across miles of network infrastructure.
3. Consumer Electronics: Spread-spectrum clocks reduce EMI in gaming consoles (PS5/Xbox) to pass EMC certification. Ultra-low jitter ensures Hi-Fi audio quality.
4. Automotive: ADAS and Infotainment systems require AEC-Q100 certified clocks to function in extreme temperatures and high-vibration environments.
5. Industrial Automation: Synchronizes multi-axis robotic arms and PLC controllers with microsecond precision.
6. Medical Equipment: Ensures high-frequency sampling stability for clear imaging in Ultrasound, CT, and MRI machines.

Core Categories of Clock Generators & Support Products

Category	Core Logic	Key Manufacturers	Target Applications
General Programmable	Reduces BOM; one chip replaces multiple crystals	Skyworks, Microchip	Embedded, Industrial, Smart hardware
Protocol Specific	Meets mandatory jitter/sync standards (PCIe/Net)	Renesas, ADI	Servers, Storage, Base stations
MEMS/High Performance	Vibration resistance; ultra-low jitter	SiTime, TI	Aerospace, 5G, Medical imaging
Sync/Translate/EMI	EMI optimization; cross-system calibration	ADI, ON Semi, TI	Automotive, Complex comms systems