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SI5341A-B-GM

Name: SI5341A-B-GM
Rating: 4.7 (12 reviews)

IC CLK BUFFER PLL 64QFN

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規格

Part Status	Obsolete
Base Product Number	SI5341
DigiKey Programmable	Not Verified
PLL	Yes
Input	LVCMOS, LVDS, LVPECL, Crystal
Output	CML, HCSL, LVCMOS, LVDS, LVPECL
Number of Circuits	1
Ratio - Input:Output	4:10
Differential - Input:Output	Yes/Yes
Frequency - Max	712.5MHz
Divider/Multiplier	Yes/No
Voltage - Supply	1.71V ~ 3.47V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package	64-VFQFN Exposed Pad
Supplier Device Package	64-QFN (9x9)
Packaging	Tray

概述

Description

SI5341A-B-GM is Silicon Labs’ high‑performance, programmable multi‑output clock generator (clock multiplier/zero‑delay buffer). It accepts a reference clock (crystal or oscillator) and, using fractional‑N PLLs and programmable dividers, produces several independent, low‑jitter clock outputs at user‑selected frequencies. Key features include jitter cleaning, holdover, spread‑spectrum clocking, and an I2C/SMBus control interface for dynamic reconfiguration and monitoring. It is designed to synchronize and distribute clocks to digital logic, CPUs/FPGA fabrics, SerDes, and telecom/network systems. The A/B in the name denotes device revision, while GM designates a specific RoHS‑compliant package variant.

Features

SI5341A-B-GM is Silicon Labs’ flexible any-rate, any-output clock multiplier/buffer with jitter attenuation. Key features:
- Fractional-N PLLs for generating arbitrary output frequencies from a wide reference/input range
- Multiple outputs with independent or phase-aligned configurations
- I2C (register-based) programmable, with options for non-volatile and volatile setup
- Spread-spectrum clocking to reduce EMI
- Low jitter and low skew across outputs (jitter-cleaning capability)
- Holdover and fail-safe behaviors; programmable output enable/disable and drive-strength
- Flexible duty-cycle control and output polarity options
- Wide operating range and RoHS-compliant packaging; variant -GM
Note: For exact specifications (input/output ranges, jitter figures, supported interfaces, and package details), please consult the latest datasheet.

Package

The SI5341A-B-GM comes in a 32‑pin QFN package with an exposed pad (RoHS-compliant, GM).

Pinout

- Pin count: 28 pins (QFN-28).
- Function: High-performance clock generator/jitter cleaner and distributor. It takes one or two reference clocks and outputs multiple low-jitter clock signals; programmable via I2C for frequency/phase/divider settings.

Manufacturer

- Manufacturer: Silicon Labs (Silicon Laboratories, Inc.), gyak. marketed as Silicon Labs.
- Company type: A fabless semiconductor company that designs and sells mixed-signal ICs, including timing solutions (clock generators/oscillators), microcontrollers, and wireless connectivity; headquartered in Austin, Texas (publicly traded, NASDAQ: SLAB).

Application

SI5341A-B-GM is a programmable jitter-attenuating clock generator/distributor. Typical applications include:
- High-speed serial interfaces: PCIe, SATA, USB, HDMI/DP, Ethernet SerDes
- FPGA/ASIC/SoC clocking: reference and jitter-cleaned clocks for SERDES and memory
- Memory and video interfaces: DDR/LPDDR, HDMI/DP, SDI clocks
- Telecom/packet-switch timing and backplane clock distribution
- Test and measurement equipment clock sources