Clock/Timing - Application Specific

Part Number	Description / PDF	Quantity
CDCD5704PWR Texas Instruments	CDCD5704 RAMBUS XDR, CLOCK GENER	38000
CDC924DLR Texas Instruments	PROCESSOR CLOCK GENERATOR	14000
TNETA1560PGC Texas Instruments	ATM SEGMENTATION AND REASSEMBLY	1798
LMK00334RTVTQ1 Texas Instruments	FOUR-OUTPUT PCIE/CLOCK BUFFER	3925
CDCFR83DBQR Texas Instruments	PLL BASED CLOCK DRIVER, 83 SERIE	35000
CDCU877AZQLT Texas Instruments	CDCU877A 1.8V PHASE-LOCK LOOP CL	11430
CDCUA877NMKT Texas Instruments	IC PLL CLOCK DRIVER 1.8V 52-BGA	0
CDCR83ADBQR Texas Instruments	CDCR83A DIRECT RAMBUS, CLOCK GEN	36047
CDCU877RHAR Texas Instruments	CDCU877 1.8V PHASE-LOCK LOOP CLO	11725
CDCU877ARTBT Texas Instruments	PLL CLOCK DRIVER	12851
CDCUA877ZQLT Texas Instruments	CDCUA877 1.8V PHASE-LOCK LOOP CL	9525
LMK00334RTVRQ1 Texas Instruments	IC CLK BUF 400MHZ 1CIRC 32WQFN	372
CDCU877AGQLT Texas Instruments	PLL CLOCK DRIVER	13910
CDCR83ADBQRG4 Texas Instruments	IC DIRECT RAMBUS CLK GEN 24-QSOP	0
CAB4AZNRR Texas Instruments	PLL BASED CLOCK DRIVER, CAB4A SE	51843
CDCD5704PWG4 Texas Instruments	IC CLOCK GEN FOR XDR MEM 28TSSOP	0
CDCU877ARHAT Texas Instruments	IC PLL CLOCK DRIVER 1.8V 40VQFN	153
CDCR83DBQRG4 Texas Instruments	PLL CLOCK DRIVER	3730
CDCU877RHARG4 Texas Instruments	IC PLL CLOCK DRIVER 1.8V 40VQFN	0
CDCFR83ADBQRG4 Texas Instruments	IC CLOCK GENERATOR 533MHZ 24QSOP	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