542CAA002438BAGR datasheet, PDF

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542CAA002438BAGR: DescriptionStandard Clock Oscillators Quad Frequency XO; CategoryPassive components; File Size891KB，16 Pages; ManufacturerSilicon Laboratories

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Standard Clock Oscillators Quad Frequency XO

542CAA002438BAGR Parametric

Parameter Name	Attribute value
Product Attribute	Attribute Value
Manufacturer	Silicon Laboratories
Product Category	Standard Clock Oscillators

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Ultra Series

™

Crystal Oscillator

Si542 Data Sheet

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

MHz

The Si542 Ultra Series

™

oscillator utilizes Silicon Laboratories’ advanced 4

gen-

eration DSPLL

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

four selectable frequencies. The device is factory-programmed to provide any four

selectable frequencies from 0.2 to 1500 MHz with <1 ppb resolution and maintains

exceptionally low jitter for both integer and fractional frequencies across its operat-

ing range. The Si542 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 indus-

try-standard 3.2x5 mm and 5x7 mm footprints, the Si542 has a dramatically simpli-

fied 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 re-

quired for each output frequency, the Si542 uses one simple crystal and a DSPLL

IC-based approach to provide the desired output frequencies. This process also

guarantees 100% electrical testing of every device. The Si542 is factory-configura-

ble 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 oscilla-

tors.

Pin Assignments

FS1

OE/NC

KEY FEATURES

• Available with any four selectable

frequencies from 200 kHz 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 85 °C)

• 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, 5x7 mm package footprints

• Samples available with 1-2 week lead times

APPLICATIONS

• 100G/200G/400G OTN, coherent optics

• 10G/25G/40G/100G Ethernet

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

• Servers, switches, storage, NICs, search

acceleration

• Test and measurement

• Clock and data recovery

• FPGA/ASIC clocking

VDD

CLK-

CLK+

NC/OE

GND

FS0

(Top View)

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.

NVM

OSC

Fixed

Frequency

Crystal

Frequency

Flexible

DSPLL

DCO

Low

Noise

Driver

Digital

Phase

Detector

Phase Error

Cancellation

Phase Error

Fractional

Divider

Digital

Loop

Filter

Flexible

Formats,

1.8V – 3.3V

Operation

VDD = Power supply

FS1 = Frequency Select 1

FS0 = Frequency Select 0

Control

Power Supply Regulation

OE, Frequency Select

(Pin Control)

Built-in Power Supply

Noise Rejection

silabs.com

| Building a more connected world.

Rev. 0.75

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Description	Standard Clock Oscillators Quad Frequency XO	Standard Clock Oscillators PROGRAMMABLE QUAD XO 0.125ps RMS JTR NCNR	Standard Clock Oscillators Quad Frequency XO	Standard Clock Oscillators Quad Frequency XO	Standard Clock Oscillators Quad Frequency XO	Standard Clock Oscillators Quad Frequency XO	Standard Clock Oscillators Quad Frequency XO	Standard Clock Oscillators Quad Frequency XO	Standard Clock Oscillators Quad Frequency XO	Standard Clock Oscillators Quad Frequency XO
Product Attribute	Attribute Value	Attribute Value	Attribute Value	Attribute Value	Attribute Value	Attribute Value	Attribute Value	Attribute Value	Attribute Value	Attribute Value
Manufacturer	Silicon Laboratories	Silicon Laboratories	Silicon Laboratories	Silicon Laboratories	Silicon Laboratories	Silicon Laboratories	Silicon Laboratories	Silicon Laboratories	Silicon Laboratories	Silicon Laboratories
Product Category	Standard Clock Oscillators	Standard Clock Oscillators	Standard Clock Oscillators	Standard Clock Oscillators	Standard Clock Oscillators	Standard Clock Oscillators	Standard Clock Oscillators	Standard Clock Oscillators	Standard Clock Oscillators	Standard Clock Oscillators

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