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SI53340-B-GMR

Name: SI53340-B-GMR
Rating: 4.7 (12 reviews)

IC CLK BUFFER 2:4 LVDS 16QFN

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製造商。部分 #SI53340-B-GMR
包 16-VFQFN Exposed Pad
資料表 SI53340-B-GMR DataSheet
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規格

Supplier	Skyworks Solutions Inc.
Package	Tape & Reel (TR),Cut Tape (CT)
ProductStatus	Active
Type	Fanout Buffer (Distribution), Multiplexer
NumberofCircuits	1
Ratio-Input:Output	2:4
Differential-Input:Output	Yes/Yes
Input	CML, HCSL, LVCMOS, LVDS, LVPECL
Output	CML, HCSL, LVCMOS, LVDS, LVPECL
Frequency-Max	1.25 GHz
Voltage-Supply	1.71V ~ 3.63V
OperatingTemperature	-40°C ~ 85°C
MountingType	Surface Mount
Package/Case	16-VFQFN Exposed Pad

概述

Description

The SI53340-B-GMR is Silicon Labs’ four-output, I2C-programmable clock generator and frequency synthesizer. It derives four low-jitter clock outputs from a single reference (via internal PLLs/dividers), with each output frequency programmable independently over I2C. Typical uses include clock distribution for FPGAs, SerDes, memory interfaces, and CPUs.
Key points:
- Up to 4 independent outputs with configurable formats (e.g., LVCMOS/LVDS-type) and drive options.
- Fractional-N synthesis, programmable dividers, and optional spread-spectrum.
- I2C control (often with ClockBuilder Pro) to set frequencies, enable states, and other features.
- Features like holdover, power-down, and output enable for flexible design flows.
- The suffix -B-GMR denotes a specific device revision/grade (industrial temperature) in a RoHS-compliant package.
For exact electrical specs, pinout, and the register map, consult the SI53340-B-GMR datasheet and user guides.

Features

Key features of SI53340-B-GMR (concise):
- High-performance clock generator with 1 reference input and up to 4 independently programmable outputs.
- I2C/SMBus two-wire control interface for setup, monitoring, and dynamic reconfiguration.
- Flexible output formats: LVCMOS, LVDS, LVPECL, and HCSL with selectable drive strength.
- PLL-based frequency synthesis with fractional-N and integer-N division for precise output frequencies.
- Spread-spectrum clocking to reduce EMI; supports jitter reduction and low-skew outputs.
- Per-output enable/disable and programmable phase alignment for synchronized multi-output clocks.
- Wide operating range and good jitter performance suitable for high-speed data applications.
- Power-management features (e.g., configurable outputs, low-power modes).
- Surface-mount, RoHS-compliant package suitable for compact designs.
Note: exact voltage ranges, temperature range, and package details depend on the specific variant and revision.

Package

The SI53340-B-GMR is supplied in a 56-pin surface-mount QFN/LFCSP-style package (7.0 mm × 7.0 mm body, fine-pitch pads).

Pinout

Pin count: 56 pins (GMR = 56-pin LGA/QFN package).
Function: The Si53340-B-GMR is a programmable, multi-output any-frequency clock generator/jitter-attenuating PLL. It provides multiple independently configurable clock outputs (selectable CMOS/LVDS/LVPECL levels), on-chip reference/feedback routing, power and ground pins, and an I2C/SMBus control interface for frequency programming, output enable, and register configuration. It is used to generate, multiply/divide, and distribute low‑jitter clocks in communication and timing applications.

Manufacturer

Manufacturer: Silicon Labs (Silicon Laboratories, Inc.).
What kind of company: Silicon Labs is a fabless semiconductor company headquartered in Austin, Texas, that designs and sells mixed-signal integrated circuits and software — notably timing devices (clock generators/jitter attenuators), microcontrollers, wireless SoCs, sensors and IoT connectivity solutions.

Application

Applications of the SI53340-B-GMR:
- Flexible, multi-output clock generation and distribution for FPGAs/SoCs
- Low-jitter reference clocks for telecom, backplane and network equipment
- Clock synthesis/cleaning for high-speed SERDES links (PCIe, SATA, USB, DisplayPort/HDMI) and memory interfaces (DDR)
- Timing sources for servers, data centers and industrial automation
- Clock-domain crossing and system timing in timing-sensitive designs