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545CAB25M0000BAG

Description
CMOS Output Clock Oscillator,
CategoryPassive components    oscillator   
File Size960KB,14 Pages
ManufacturerSilicon Laboratories Inc
Download Datasheet Parametric View All

545CAB25M0000BAG Overview

CMOS Output Clock Oscillator,

545CAB25M0000BAG Parametric

Parameter NameAttribute value
Objectid8277417181
Reach Compliance Codeunknown
Other featuresTRI-STATE; E/D FUNCTION; 1.8 2.5V SUPPLY VOLTAGE ALSO AVAILABLE; TAPE
maximum descent time1.5 ns
Frequency Adjustment - MechanicalNO
frequency stability20%
Installation featuresSURFACE MOUNT
Nominal operating frequency25 MHz
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Oscillator typeCMOS
Output load5 pF
physical size5.0mm x 3.2mm x 1.28mm
longest rise time1.5 ns
Maximum supply voltage3.465 V
Minimum supply voltage3.135 V
Nominal supply voltage3.3 V
surface mountYES
maximum symmetry55/45 %
Ultra Series
Crystal Oscillator
Si545 Data Sheet
Ultra Low Jitter Any-Frequency XO (80 fs), 0.2 to 1500 MHz
KEY FEATURES
The Si545 Ultra Series
oscillator utilizes Silicon Laboratories’ advanced 4
th
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 Si545 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 a small, industry-standard 3.2×5 mm footprint, the
Si545 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 Si545 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
Si545 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
• Ultra low jitter: 80 fs Typ RMS
(12 kHz – 20 MHz)
• Excellent PSRR and supply noise
immunity: –80 dBc Typ
• 3x tighter stability than SAW oscillators
• 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 mm package footprint
• Samples 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
• Datacenter
• Test and measurement
• Clock and data recovery
• FPGA/ASIC clocking
OE/NC
1
2
3
(Top View)
6
5
4
VDD
CLK-
CLK+
NC/OE
GND
Pin #
1, 2
3
4
5
6
Descriptions
Selectable via ordering option
OE = Output enable; NC = No connect
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
Output Enable
(Pin Control)
Built-in Power Supply
Noise Rejection
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