SI5345A-B04583-GM

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Clock Generator and Jitter Attenuator
• Characteristics:
  • High-performance clock synthesis and distribution
  • Low jitter and phase noise
  • Flexible frequency configuration
  • Wide operating range
• Package: QFN (Quad Flat No-Lead)
• Essence: Provides precise clock signals for various electronic systems
• Packaging/Quantity: Typically sold in reels of 2500 units

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

Detailed Pin Configuration

The SI5345A-B04583-GM has a total of 48 pins. Here is a detailed pin configuration:

1. XAXB[3:0] - Differential input clocks
2. XAXC[3:0] - Differential input clocks
3. XDXB[3:0] - Differential input clocks
4. XDXC[3:0] - Differential input clocks
5. XREFCLK - Reference clock input
6. XOD[3:0] - Differential output clocks
7. XOE[3:0] - Output enable control
8. XOS[3:0] - Output signal strength control
9. XOC[3:0] - Output clock format control
10. XOFB[3:0] - Feedback clock inputs
11. XOSK - Crystal oscillator input
12. XOSKB - Crystal oscillator input
13. XSD - Serial data input
14. XSC - Serial clock input
15. XSI - Serial data output
16. XSO - Serial clock output
17. XSDO - Serial data output
18. XSCB - Serial clock input
19. XSB - Serial data input
20. XSA - Serial data input
21. XSB - Serial data input
22. XSA - Serial data input
23. XSB - Serial data input
24. XSA - Serial data input
25. XSB - Serial data input
26. XSA - Serial data input
27. XSB - Serial data input
28. XSA - Serial data input
29. XSB - Serial data input
30. XSA - Serial data input
31. XSB - Serial data input
32. XSA - Serial data input
33. XSB - Serial data input
34. XSA - Serial data input
35. XSB - Serial data input
36. XSA - Serial data input
37. XSB - Serial data input
38. XSA - Serial data input
39. XSB - Serial data input
40. XSA - Serial data input
41. XSB - Serial data input
42. XSA - Serial data input
43. XSB - Serial data input
44. XSA - Serial data input
45. XSB - Serial data input
46. XSA - Serial data input
47. XSB - Serial data input
48. XSA - Serial data input

Functional Features

• Clock synthesis and distribution with low jitter and phase noise
• Flexible frequency configuration to meet various system requirements
• Integrated loop filter for simplified design
• Programmable output formats and signal strengths
• Spread Spectrum Clocking (SSC) support for EMI reduction
• I2C interface for easy control and configuration

Advantages and Disadvantages

Advantages

• High-performance clock generation and distribution
• Low jitter and phase noise for improved system performance
• Flexible frequency configuration to accommodate different applications
• Integrated loop filter simplifies design and reduces external components
• Programmable output formats and signal strengths for customization
• SSC support helps in reducing electromagnetic interference (EMI)
• Easy control and configuration through the I2C interface

Disadvantages

• Limited input and output voltage range (2.5 V to 3.3 V)
• Relatively high power consumption compared to some alternatives
• Requires careful consideration of PCB layout and signal integrity

Working Principles

The SI5345A-B04583-GM is a clock generator and jitter attenuator IC that provides precise clock signals for electronic systems. It uses advanced PLL (Phase-Locked Loop) technology to generate stable and low-jitter clock signals from an external reference clock.

The device accepts differential input clocks, which can be either crystal oscillator or LVCMOS/LVDS signals. The input clocks are processed by the PLL circuitry, which generates multiple output clocks with programmable frequencies and formats. The integrated loop filter