Clock/Timing - Clock Generators, PLLs, Frequency Synthesizers

Part Number	Description / PDF	Quantity
CY7B9910-5SC IR (Infineon Technologies)	PLL CLOCK DRIVER	1334
CY7B994V-2AXI IR (Infineon Technologies)	PLL BASED CLOCK DRIVER, 7B SERIE	3938
CY22800FXC IR (Infineon Technologies)	CLOCK GENERATOR	0
CY22801KSXC-011 IR (Infineon Technologies)	IC CLOCK GENERATOR	864
CY25404ZXI010 IR (Infineon Technologies)	QUAD PLL PROGRAMMABLE CLOCK GENE	401
CY25100SXC-070 IR (Infineon Technologies)	CLOCKS	982
CY22388ZXC-27T IR (Infineon Technologies)	CLOCKS	2500
CY27027ZXC IR (Infineon Technologies)	IC SS CLOCK GENERATOR 8TSSOP	5491
CY2292SXL-1X5 IR (Infineon Technologies)	PROGRAMMABLE PLL CLOCK GENERATOR	1838
CY2410SXC-5 IR (Infineon Technologies)	VIDEO CLOCK GENERATOR	9484
CY25100SXC-064 IR (Infineon Technologies)	FIELD AND FACTORY-PROGRAMMABLE S	801
CY2309CZXC-1T IR (Infineon Technologies)	PLL BASED CLOCK DRIVER, 2309 SER	633
PEB2045NVA3SMTSC IR (Infineon Technologies)	MTSC (MEMORY TIME SWITCH CMOS)	0
CY2292FXC IR (Infineon Technologies)	PROCESSOR SPECIFIC CLOCK GENERAT	180
CY2309CZXI-1 IR (Infineon Technologies)	PLL BASED CLOCK DRIVER, 2309 SER	17701
CY22050KZXI-133T IR (Infineon Technologies)	IC CLOCK GENERATOR	2500
CY2292FZXIT IR (Infineon Technologies)	PROCESSOR SPECIFIC CLOCK GENERAT	9650
CY7B9945V-5AXCT IR (Infineon Technologies)	PLL CLOCK DRIVER	3000
IMIFS781BZB IR (Infineon Technologies)	PREMIS EMI REDUCTION SGS	10077
CY2544FC IR (Infineon Technologies)	CLOCK GENERATOR, 166MHZ, CMOS	3079

Clock/Timing - Clock Generators, PLLs, Frequency Synthesizers

1. Overview

Clock and timing ICs are semiconductor devices that generate, regulate, and distribute timing signals in electronic systems. Key components include Clock Generators (produce stable clock signals), Phase-Locked Loops (PLLs, synchronize signals with phase alignment), and Frequency Synthesizers (generate precise frequencies from reference signals). These devices ensure synchronization across components in modern electronics, enabling reliable operation in communication systems, computing devices, and industrial equipment.

2. Main Types and Functional Classification

Type	Functional Features	Application Examples
Clock Generators	Produce fixed or programmable clock signals with low jitter	Microprocessors, FPGAs, networking equipment
PLLs	Align output signal phase with reference input, enable frequency multiplication	Wireless transceivers, data recovery circuits
Frequency Synthesizers	Generate multiple frequencies from single reference with high precision	5G base stations, satellite communication systems

3. Structure and Components

Typical clock ICs feature: 1) Crystal oscillator interface for reference signal input; 2) Internal voltage-controlled oscillator (VCO); 3) Phase detector and loop filter (PLL components); 4) Programmable dividers; 5) Output buffers. Advanced packages include QFN (4x4mm to 8x8mm) and TSSOP with 8-48 pins. Integration levels vary from single-channel devices to multi-output clock generators with integrated EEPROM.

4. Key Technical Specifications

Parameter	Typical Range	Importance
Frequency Range	1 kHz - 3.6 GHz	Determines application compatibility
Phase Noise	-150 to -120 dBc/Hz	Impacts signal integrity
Jitter (RMS)	50 fs - 1 ps	Critical for high-speed systems
Power Consumption	10-300 mA	Affects thermal design
Temperature Stability	20-100 ppm	Ensures reliability in harsh environments

5. Application Fields

Telecommunications: 5G NR base stations, optical transceivers
Computing: Server motherboards, PCIe clocks
Industrial: Precision test equipment, motor control systems
Automotive: ADAS sensors, infotainment systems
Medical: MRI imaging systems, patient monitoring devices

6. Leading Manufacturers and Products

Manufacturer	Representative Product	Key Features
TI (Texas Instruments)	LMX2594	15-GHz wideband PLL with integrated VCO
Analog Devices	AD9548	4-channel clock generator with 0.1 ppb accuracy
STMicroelectronics	CLK2692	Programmable 2-output synthesizer for automotive
Microchip	ZL30264	High-performance network synchronizer

7. Selection Guidelines

Key selection criteria: 1) Required output frequency and voltage levels; 2) Acceptable phase noise/jitter specifications; 3) Number of required outputs; 4) Operating temperature range; 5) Power budget constraints; 6) Integration level (e.g., single-chip vs. discrete VCO solutions). For wireless applications, prioritize low phase noise. For portable devices, emphasize power efficiency.

8. Industry Trends

Future developments include: 1) Higher integration with on-chip EEPROM and multi-phase outputs; 2) Advancement to sub-10fs jitter performance; 3) Development of radiation-hardened variants for aerospace; 4) Adoption of 3D packaging for reduced EMI; 5) Increased use of AI-enabled dynamic frequency scaling. The market is projected to grow at 7.2% CAGR through 2027 driven by 5G and automotive electrification.