Clock/Timing - Application Specific

Part Number	Description / PDF	Quantity
CDCU2A877NMKT Texas Instruments	1.8V PHASE-LOCK LOOP CLOCK DRIVE	250
CDCU2A877ZQLR Texas Instruments	CDCU2A877 1.8V PHASE-LOCK LOOP C	102000
CDCU877ZQLT Texas Instruments	PLL BASED CLOCK DRIVER, 877 SERI	20050
CDCU877RTBT Texas Instruments	PLL BASED CLOCK DRIVER, 877 SERI	8250
CDCR83DBQG4 Texas Instruments	IC DIRECT RAMBUS CLK GEN 24-QSOP	0
SN75LVDS88PFD Texas Instruments	MICROPROCESSOR CIRCUIT	2406
CDCU877RHAT Texas Instruments	IC PLL CLOCK DRIVER 1.8V 40VQFN	470
THS788PFDT Texas Instruments	IC TIME MEASUREMNT UNIT 100HTQFP	0
LMK00338RTAT Texas Instruments	DIFFERENTIAL CLOCK BUFFER/LEVEL	569
CDCU2A877ZQLT Texas Instruments	CDCU2A877 1.8V PHASE-LOCK LOOP C	10496
CDCFR83DBQRG4 Texas Instruments	IC CLOCK GENERATOR 533MHZ 24QSOP	0
CDCU877ANMKT Texas Instruments	IC PLL CLOCK DRIVER 1.8V 52-BGA	0
CDCU877ZQLR Texas Instruments	PLL BASED CLOCK DRIVER, 877 SERI	40000
CDCR83ADBQ Texas Instruments	PLL CLOCK DRIVER	14966
CDC960DLR Texas Instruments	PROCESSOR CLOCK GENERATOR	56490
CDCFR83ADBQG4 Texas Instruments	IC CLOCK GENERATOR 533MHZ 24QSOP	0
CDCR81DBQR Texas Instruments	PROCESSOR CLOCK GENERATOR	14622
CDCR61APWR Texas Instruments	CDCR61A DIRECT RAMBUS CLOCK GENE	26000
CDCF2509PWR Texas Instruments	PLL BASED CLOCK DRIVER, 2509 SER	30030
CDCR61APWRG4 Texas Instruments	IC DIRECT RAMBUS CLK GEN 16TSSOP	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