Clock/Timing - Application Specific

Image	Part Number	Description / PDF	Quantity	Rfq
	PI6C557-06LIEX Zetex Semiconductors (Diodes Inc.)	IC CLOCK GENERATOR 20-TSSOP	0
	PT7C5006ANEWEX Zetex Semiconductors (Diodes Inc.)	XO CLOCK SO-8	0
	PI6C20800VE Zetex Semiconductors (Diodes Inc.)	IC CLOCK BUFFER 1:8 48SSOP	0
	PI6CDBL401BZHIE Zetex Semiconductors (Diodes Inc.)	IC CLOCK 100MHZ 1CIR 32TQFN	0
	PI6C557-10LEX Zetex Semiconductors (Diodes Inc.)	IC CLOCK GENERATOR 16TSSOP	0
	PI6C557-03LE Zetex Semiconductors (Diodes Inc.)	IC CLOCK GENERATOR 16TSSOP	0
	PI6LC4840ZHE Zetex Semiconductors (Diodes Inc.)	IC FREQ SYNTHESIZER 32TQFN	0
	PI6C20400SHEX Zetex Semiconductors (Diodes Inc.)	IC CLOCK BUFF 1:4 28-SSOP	0
	PT7C5006ANDWE Zetex Semiconductors (Diodes Inc.)	XO CLOCK SO-8	0
	PI6LC48S25AZBBIE Zetex Semiconductors (Diodes Inc.)	IC CLOCK 312.5MHZ 1CIR 56TQFN	0
	PI6C49016ZDIE Zetex Semiconductors (Diodes Inc.)	IC CLOCK GENERATOR TQFN	0
	PI6C49003AEX Zetex Semiconductors (Diodes Inc.)	IC CLOCK GENERATOR 48TSSOP	0
	PI6C20800BIAE Zetex Semiconductors (Diodes Inc.)	IC CLOCK BUFFER 1:8 48TSSOP	0
	PI6C49016ZDIEX Zetex Semiconductors (Diodes Inc.)	IC CLOCK GENERATOR TQFN	0
	PI6LC4830ZHE Zetex Semiconductors (Diodes Inc.)	IC CLOCK GENERATOR 32TQFN	0
	PI6C557-03ALE Zetex Semiconductors (Diodes Inc.)	IC CLOCK GENERATOR 16TSSOP	0
	PT7C5022A1ATAEX Zetex Semiconductors (Diodes Inc.)	XO CLOCK SOT26	0
	PI6PCIEB24ZDE Zetex Semiconductors (Diodes Inc.)	IC CLOCK DRIVER 20TQFN	0
	PI6LC48S25ZBBIE Zetex Semiconductors (Diodes Inc.)	HIFLEX ETHERNET NETWORK CLOCK GE	0
	PI6CVF857AE Zetex Semiconductors (Diodes Inc.)	IC CLK BUF DDR 220MHZ 1CIRC	0

Clock/Timing - Application Specific

1. Overview

Application-Specific Clock/Timing ICs are specialized semiconductor devices designed to generate, distribute, and manage precise timing signals for targeted system requirements. Unlike general-purpose timing solutions, these ICs integrate optimized architectures for specific performance metrics such as ultra-low jitter, high-frequency stability, or specialized synchronization protocols. They play a critical role in ensuring system reliability, data integrity, and operational efficiency across modern electronics, from telecommunications infrastructure to automotive control systems.

2. Major Types and Functional Classification

Type	Functional Features	Application Examples
Real-Time Clocks (RTC)	Low-power timekeeping with calendar functions, often integrated with memory	Computers, smart meters, medical devices
Clock Generators	Multi-output frequency synthesis with programmable phase alignment	Networking equipment, FPGAs, servers
Jitter Attenuators	Phase noise reduction using advanced PLL architectures	5G base stations, high-speed transceivers
Fanout Buffers	Signal replication with skew control and impedance matching	Industrial automation, PCIe systems
Clock Controllers	Dynamic frequency switching and redundancy management	Automotive ADAS, aerospace systems

3. Structure and Composition

Typical devices feature:

Package Types: QFN, BGA, TSSOP (sizes from 2x2mm to 14x14mm)
Core Components: Crystal oscillator interface, fractional-N PLL, programmable dividers, LVDS/CML output drivers
Specialized Circuits: Spread-spectrum control, failover multiplexers, temperature compensation modules
Power Management: Multiple voltage domains, low-dropout regulators for analog/digital isolation

4. Key Technical Specifications

Parameter	Significance	Typical Values
Frequency Range	Determines application suitability	1kHz 1GHz
Phase Jitter (RMS)	Impacts signal integrity in high-speed systems	50fs 5ps
Power Supply Range	Affects system design flexibility	1.8V 5.5V
Operating Temperature	Defines environmental robustness	-40 C to +125 C
Phase Noise @1MHz Offset	Critical for RF/wireless applications	-155dBc/Hz

5. Application Fields

Telecommunications: 5G massive MIMO arrays, optical transceivers
Industrial: Programmable logic controllers (PLCs), precision test equipment
Automotive: Advanced driver assistance systems (ADAS), vehicle networking
Consumer Electronics: High-resolution displays, AR/VR headsets

6. Leading Manufacturers and Products

Vendor	Product Series	Key Features
TI (Texas Instruments)	CDCM62xx	3.2GHz clock generator with 50fs jitter
STMicroelectronics	M41Txx RTC	2ppm accuracy with embedded EEPROM
Microchip Technology	ZL303xx	IEEE 1588 boundary clock synchronization
Analog Devices	HMC7044	14-output jitter attenuator for RF systems

7. Selection Guidelines

Application Requirements: Prioritize jitter specifications for communications vs. power consumption for portable devices
Frequency Precision: Use MEMS-based oscillators for vibration resistance in automotive applications
Environmental Factors: Select industrial-grade (-40 to +85 C) for outdoor equipment
Integration Level: Combine clock generation + buffering in single chip for space-constrained designs
Compliance: Verify automotive (AEC-Q100), aerospace (ECSS) certifications

8. Industry Trends

Emerging directions include:

Integration of AI-driven phase calibration algorithms
Development of chip-scale atomic clock (CSAC) technology for sub-ppb stability
Adoption of 3D packaging to minimize parasitic capacitance
Increasing demand for multi-standard timing solutions (5G+GNSS+Ethernet)
Growth of energy-harvesting RTC ICs for IoT edge devices