Clock/Timing - Clock Generators, PLLs, Frequency Synthesizers

Part Number	Description / PDF	Quantity
NB2309AI1DR2G Sanyo Semiconductor/ON Semiconductor	IC BUFFER CLK 9OUT 3.3V 16-SOIC	1450
NB3N3020DTG Sanyo Semiconductor/ON Semiconductor	IC CLK MULTIPLIER 3.3V 16-TSSOP	264
NB3N3002DTG Sanyo Semiconductor/ON Semiconductor	IC CLK GEN XTAL-HCSL 16-TSSOP	29315744
FS7140-02G-XTP Sanyo Semiconductor/ON Semiconductor	IC CLOCK GEN PLL PROG 16SSOP	0
NB3N502DR2G Sanyo Semiconductor/ON Semiconductor	IC MULTIPLIER CLOCK PLL 8-SOIC	31
NB3N51034DTR2G Sanyo Semiconductor/ON Semiconductor	IC CLK GEN QUAD HCSL/LVDS 20TSSO	2260
FS7140-02G-XTD Sanyo Semiconductor/ON Semiconductor	IC CLOCK GEN PLL PROGR 16-SSOP	31696
NBC12430FNG Sanyo Semiconductor/ON Semiconductor	IC CLK PLL SYNC 50-800MHZ 28PLCC	114477
NB3W1200LMNTXG Sanyo Semiconductor/ON Semiconductor	IC CLOCK ZDB FANOUT BUFFER 64QFN	0
MC12093DR2G Sanyo Semiconductor/ON Semiconductor	IC PRESCALER 2/4/8 1.1GHZ 8-SOIC	2780
NB2305AI1HDG Sanyo Semiconductor/ON Semiconductor	IC BUFFER CLOCK 5OUT 3.3V 8-SOIC	0
MC14046BDWR2G Sanyo Semiconductor/ON Semiconductor	IC PHASE LOCK LOOP CMOS 16SOIC	12139000
MC100LVEP34DTG Sanyo Semiconductor/ON Semiconductor	IC CLOCK GEN ECL 2/4/8 16TSSOP	12768
FS6377-01IG-XTD Sanyo Semiconductor/ON Semiconductor	IC CLOCK GEN 3-PLL PROGR 16-SOIC	229408
MC100EP40DTR2G Sanyo Semiconductor/ON Semiconductor	IC DETECT PHASE FREQ ECL 20TSSOP	0
NB7V32MMNTXG Sanyo Semiconductor/ON Semiconductor	IC CLOCK DIVIDER 1.8/2.5V 16-QFN	0
MC100EP139DWG Sanyo Semiconductor/ON Semiconductor	IC CLK GEN ECL 2/4 4/5/6 20SOIC	120
NB3N5573DTR2G Sanyo Semiconductor/ON Semiconductor	IC CLK GEN XTAL-DL HCSL 16TSSOP	30
MC100EP40DTG Sanyo Semiconductor/ON Semiconductor	IC DETECT PHASE FREQ ECL 20TSSOP	76150
NB2305AI1HDTR2G Sanyo Semiconductor/ON Semiconductor	IC BUFFER CLK 5OUT 3.3V 8-TSSOP	0

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.