540BAA000351BAG datasheet, PDF

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540BAA000351BAG: DescriptionStandard Clock Oscillators Single Frequency XO; CategoryPassive components; File Size868KB，16 Pages; ManufacturerSilicon Laboratories

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540BAA000351BAG Overview

Standard Clock Oscillators Single Frequency XO

540BAA000351BAG Parametric

Parameter Name	Attribute value
Product Attribute	Attribute Value
Manufacturer	Silicon Laboratories
Product Category	Standard Clock Oscillators
Frequency	0.2 MHz to 1500 MHz
Frequency Stability	50 PPM
Load Capacitance	5 pF
Operating Supply Voltage	1.8 V, 2.5 V, 3.3 V
Supply Voltage - Min	1.71 V
Supply Voltage - Max	3.465 V
Output Format	LVDS
Termination Style	SMD/SMT
Package / Case	3.2 mm x 5 mm
Minimum Operating Temperature	- 40 C
Maximum Operating Temperature	+ 85 C
Length	5 mm
Width	3.2 mm
Height	1.17 mm
Current Rating	75 mA
Duty Cycle - Max	55 %

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Ultra Series

™

Crystal Oscillator

Si540 Data Sheet

Ultra Low Jitter Any-Frequency XO (125 fs), 0.2 to 1500 MHz

KEY FEATURES

The Si540 Ultra Series

™

oscillator utilizes Silicon Laboratories’ advanced 4

generation DSPLL

technology to provide an ultra-low jitter, low phase noise clock

at any output frequency. The device is factory-programmed to any frequency from

0.2 to 1500 MHz with <1 ppb resolution and maintains exceptionally low jitter for

both integer and fractional frequencies across its operating range. The Si540

offers excellent reliability and frequency stability as well as guaranteed aging

performance. On-chip power supply filtering provides industry-leading power

supply noise rejection, simplifying the task of generating low jitter clocks in noisy

systems that use switched-mode power supplies. Offered in industry-standard

3.2×5 mm and 5×7 mm footprints, the Si540 has a dramatically simplified supply

chain that enables Silicon Labs to ship custom frequency samples 1-2 weeks after

receipt of order. Unlike a traditional XO, where a different crystal is required for

each output frequency, the Si540 uses one simple crystal and a DSPLL IC-based

approach to provide the desired output frequency. This process also guarantees

100% electrical testing of every device. The Si540 is factory-configurable for a

wide variety of user specifications, including frequency, output format, and OE pin

location/polarity. Specific configurations are factory-programmed at time of

shipment, eliminating the long lead times associated with custom oscillators.

Pin Assignments

• Available with any frequency from 0.2 MHz to

1500 MHz

• Very low jitter: 125 fs Typ RMS

(12 kHz – 20 MHz)

• Excellent PSRR and supply noise immunity:

–80 dBc Typ

• 10 ppm stability option (-40 to 85C)

• 3.3 V, 2.5 V and 1.8 V V

supply operation

from the same part number

• LVPECL, LVDS, CML, HCSL, CMOS, and

Dual CMOS output options

• 3.2×5, 5×7 mm package footprints

• Any custom frequency available with 1-2

week lead times

APPLICATIONS

• 100G/200G/400G OTN, coherent optics

• 10G/40G/100G optical ethernet

• 3G-SDI/12G-SDI/24G-SDI broadcast video

VDD

CLK-

CLK+

OE/NC

(Top View)

• Servers, switches, storage, NICs, search

acceleration

• Test and measurement

• Clock and data recovery

• FPGA/ASIC clocking

NC/OE

GND

Pin #

1, 2

Descriptions

Selectable via ordering option

OE = Output enable; NC = No connect

GND = Ground

CLK+ = Clock output

CLK- = Complementary clock output. Not used

for CMOS.

VDD = Power supply

NVM

Control

Fixed

Frequency

Crystal

Frequency

Flexible

DSPLL

DCO

Low

Noise

Driver

OSC

Digital

Phase

Detector

Phase Error

Cancellation

Phase Error

Fractional

Divider

Digital

Loop

Filter

Flexible

Formats,

1.8V – 3.3V

Operation

Power Supply Regulation

Output Enable

(Pin Control)

Built-in Power Supply

Noise Rejection

silabs.com

| Building a more connected world.

Rev. 0.75

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