546BAA000439BBGR datasheet, PDF

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546BAA000439BBGR: DescriptionStandard Clock Oscillators Dual Frequency XO; CategoryPassive components; File Size814KB，16 Pages; ManufacturerSilicon Laboratories

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546BAA000439BBGR Overview

Standard Clock Oscillators Dual Frequency XO

546BAA000439BBGR 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	83 mA
Type	Crystal Oscillator
Duty Cycle - Max	55 %

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Ultra Series

™

Crystal Oscillator

Si546 Data Sheet

Ultra Low Jitter Dual Any-Frequency XO (80 fs), 0.2 to 1500

MHz

The Si546 Ultra Series

™

oscillator utilizes Silicon Laboratories’ advanced 4

gen-

eration DSPLL

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

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

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 Si546 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 Si546 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 Si546 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 Si546 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

KEY FEATURES

• Available with any two selectable frequencies

from 200 kHz to 1500 MHz

• Ultra low jitter: 80 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

OE/FS

(Top View)

VDD

CLK-

CLK+

FS/OE

GND

Pin #

1, 2

Descriptions

Selectable via ordering option

OE = Output enable; FS = Frequency Select

GND = Ground

CLK+ = Clock output

NVM

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

CLK- = Complementary clock output. Not used for CMOS.

VDD = Power supply

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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