MAC-SA5X User’s Guide
DS50002938A-page 10
2019 Microchip Technology Inc.
The MAC reflects significant advances in physics miniaturization and atomic interroga-
tion algorithms that serve to reduce size and power while providing a stable reference
frequency that is resistant to environmental perturbation. The SA5X comes in several
performance levels to meet a range of system requirements. The SA5X offers a low
height (18.3
mm/0.72
in), a small footprint (50.8
mm × 50.8
mm, or 2 in × 2 in), and an
industrial operating temperature range of –40°C to +75°C (measured at the baseplate).
It is refined for cost effective mass production and can be easily integrated into time,
frequency, and synchronization systems. The SA5X requires a single supply voltage
and can be mounted directly onto a circuit board as a component of a module used in
20
mm (0.8
in) wide card slots. The design produces a stable frequency with good
short and long term stability, and excellent phase noise performance.
This user guide provides engineering information for use of the SA5X. It also provides
supporting information for use of the Evaluation Kit (p/n 090-44500-000). Furthermore,
the design details of the Evaluation Kit can be used to assist with host system design
(for example, power conditioning, signal buffering, and so on). This user guide must be
used in conjunction with the current data sheet for the SA5X, which is available on the
Microchip web site.
1.1.1
Key Features
• 10
MHz CMOS Output
• 1PPS Disciplining
• 1PPS LVDS Inputs and Output
• –40°C to +75°C Operating Temperature (Baseplate)
• –55°C to +100°C Storage Temperature
• USB 2.0-Compatible Communication Pins
• Wide Range Allowable DC Input (4.5 to 32V)
• Fast Warm-Up Time (<7 Minutes from –10°C to +75°C)
• <5x10
-11
Monthly Aging Rate (On for 30 Days Prior)
• <100
ns Time Error in 24
hrs (Calculated Based on 5x10
-11
/mo. Aging Rate,
Assuming Zero Initial Phase/Frequency Offset, Static Environment, On for 30
Days Prior to Holdover)
• Serial/USB Interface for Digital Steering, Configuration, and Diagnostics
1.2
PHYSICAL DESCRIPTION
Labels will contain information about the part number and the serial number. The serial
number indicates the initial time of manufacture in the following manner. The first two
digits of serial number indicate the year of manufacture (18 = 2018). Digits three and
four indicate the month of manufacture (01 = January).
The MAC consists of a 2
in x 2
in x 0.7
in PCB-mountable chassis, consisting of a
Nickel-plated Aluminum baseplate and black anodized Aluminum cover. All connec-
tions for the MAC are on the baseplate.
shows the top cover on the left and
the bottom baseplate on the right.
See
Содержание SA5 Series
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