SI5345A-A-GMR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Clock Generator and Jitter Attenuator
• Characteristics:
  • High-performance clock generation and jitter attenuation
  • Flexible frequency synthesis and distribution
  • Low phase noise and low jitter output
  • Wide operating frequency range
• Package: 24-pin QFN package
• Essence: Provides precise clock signals for various electronic devices
• Packaging/Quantity: Available in tape and reel packaging, quantity varies based on supplier

Specifications

• Input Frequency Range: 1 Hz to 710 MHz
• Output Frequency Range: 1 Hz to 945 MHz
• Number of Outputs: 12
• Supply Voltage: 2.5 V to 3.3 V
• Operating Temperature Range: -40°C to +85°C
• Phase Noise Performance: < -230 dBc/Hz at 100 kHz offset
• RMS Jitter Performance: < 0.5 ps

Pin Configuration

The SI5345A-A-GMR has a 24-pin QFN package with the following pin configuration:

1. XAXB0: Differential input pair A
2. XAXB1: Differential input pair B
3. XAXB2: Differential input pair C
4. XAXB3: Differential input pair D
5. XAXB4: Differential input pair E
6. XAXB5: Differential input pair F
7. XAXB6: Differential input pair G
8. XAXB7: Differential input pair H
9. XAXB8: Differential input pair I
10. XAXB9: Differential input pair J
11. XAXB10: Differential input pair K
12. XAXB11: Differential input pair L
13. VDD: Power supply voltage
14. VSS: Ground
15. CLKOUT0: Output clock 0
16. CLKOUT1: Output clock 1
17. CLKOUT2: Output clock 2
18. CLKOUT3: Output clock 3
19. CLKOUT4: Output clock 4
20. CLKOUT5: Output clock 5
21. CLKOUT6: Output clock 6
22. CLKOUT7: Output clock 7
23. CLKOUT8: Output clock 8
24. CLKOUT9: Output clock 9

Functional Features

• Flexible frequency synthesis and distribution
• Programmable output frequencies and formats
• Integrated jitter attenuation for improved signal quality
• Low phase noise and low jitter output signals
• Support for various clock protocols and standards
• On-chip voltage-controlled crystal oscillator (VCXO)

Advantages and Disadvantages

Advantages: - High-performance clock generation and jitter attenuation - Wide operating frequency range - Precise and stable clock signals - Programmable features for customization - Compact package size

Disadvantages: - Requires careful configuration for optimal performance - Limited number of outputs compared to some other clock generators

Working Principles

The SI5345A-A-GMR utilizes advanced PLL (Phase-Locked Loop) technology to generate precise clock signals. It takes an input reference frequency and uses a combination of frequency dividers, phase detectors, and voltage-controlled oscillators to synthesize multiple output clocks with different frequencies and formats. The integrated jitter attenuation circuitry helps reduce the noise and distortion in the generated clock signals, resulting in improved signal quality.

Detailed Application Field Plans

The SI5345A-A-GMR is widely used in various electronic systems that require accurate and stable clock signals. Some common application fields include:

1. Telecommunications: Used in network switches, routers, and communication equipment to synchronize data transmission.
2. Data Centers: Provides precise clock signals for servers, storage systems, and network switches in data centers.
3. Consumer Electronics: Used in high-definition TVs, set-top boxes, and gaming consoles to ensure synchronized audio and video playback.
4. Industrial Automation: Provides clock synchronization for PLCs (Programmable Logic Controllers), motion control systems, and industrial robots.
5. Test and Measurement: Used in oscilloscopes, signal generators, and other test equipment to maintain accurate timing and synchronization.

Detailed and Complete Alternative Models

1. SI5341A-A-GMR: Similar to SI5345A-A-GMR but with 8 outputs instead of 12.
2. SI5342A-A-GMR: Similar to SI5345A-A-GMR but with 16 outputs instead of 12.
3. SI5346A-A-GMR: Similar to SI5345A-A-GMR but with additional features such as integrated EEPROM and enhanced jitter attenuation.

These alternative models provide similar functionality and can be considered based on specific requirements and system constraints.

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