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547BAA000489BAG

Description
Standard Clock Oscillators Quad Frequency XO
CategoryPassive components   
File Size838KB,16 Pages
ManufacturerSilicon Laboratories
Download Datasheet Parametric View All

547BAA000489BAG Overview

Standard Clock Oscillators Quad Frequency XO

547BAA000489BAG Parametric

Parameter NameAttribute value
Product AttributeAttribute Value
ManufacturerSilicon Laboratories
Product CategoryStandard Clock Oscillators
Frequency0.2 MHz to 1500 MHz
Frequency Stability50 PPM
Load Capacitance5 pF
Operating Supply Voltage1.8 V, 2.5 V, 3.3 V
Supply Voltage - Min1.71 V
Supply Voltage - Max3.465 V
Output FormatLVDS
Termination StyleSMD/SMT
Package / Case5 mm x 3.2 mm
Minimum Operating Temperature- 40 C
Maximum Operating Temperature+ 85 C
Length5 mm
Width3.2 mm
Height1.17 mm
Current Rating83 mA
TypeCrystal Oscillator
Duty Cycle - Max55 %
Ultra Series
Crystal Oscillator
Si547 Data Sheet
Ultra Low Jitter Quad Any-Frequency XO (80 fs), 0.2 to 1500
MHz
The Si547 Ultra Series
oscillator utilizes Silicon Laboratories’ advanced 4
th
gener-
ation 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 se-
lectable frequencies from 0.2 to 1500 MHz with <1 ppb resolution and maintains ex-
ceptionally low jitter for both integer and fractional frequencies across its operating
range. The Si547 offers excellent reliability and frequency stability as well as guar-
anteed 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
3.2x5 mm and 5x7 mm footprints, the Si547 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 Si547 uses one simple crystal and a DSPLL IC-based ap-
proach to provide the desired output frequencies. This process also guarantees
100% electrical testing of every device. The Si547 is factory-configurable for a wide
variety of user specifications, including frequency, output format, and OE pin loca-
tion/polarity. Specific configurations are factory-programmed at time of shipment,
eliminating the long lead times associated with custom oscillators.
Pin Assignments
FS1
OE/NC
KEY FEATURES
• Available with any four 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 85C)
• 3.3 V, 2.5 V and 1.8 V V
DD
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
1
2
3
7
6
5
4
VDD
CLK-
CLK+
NC/OE
GND
8
FS0
(Top View)
Pin #
1, 2
3
4
5
6
7
8
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
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