SA.31m, SA.33m, and SA.35m
Quantum™ Miniature Atomic Clock (MAC)
Microsemi invented portable atomic timekeeping
with QUANTUM™, the worldʼs first family of
miniature and chip scale atomic clocks.
Choose QUANTUM™ class for best-in-class
stability, size, weight, and power consumption.
Features
• High-precision atomic clock
• Small form factor (standard OCXO
pinout)
• 1.5 µs typical holdover over
temperature (SA.35m)
• Low power consumption
• RoHs 6/6-compliant
Newly Enhanced Quantum™ MAC
SA.3Xm Family
The Microsemi SA.3Xm marks a
major step forward in the evolution of
rubidium atomic clocks. Based on a new
generation of atomic clock technology,
the SA.3Xm family has a unique
package that enables unprecedented
miniaturization in a rubidium clock. It
is suitable for applications requiring
compact design, low power
consumption, extended aging, and
precision in an economical and easily
adaptable package.
Smallest Commercially Available
Rubidium Clock
Microsemi has leveraged the significant
advances in miniaturization and
integration to design the world's first
commercially available miniature atomic
clock. The SA.3Xm has physical
dimensions and packaging of a small
ovenized crystal oscillator (OCXO),
measuring 50.8 mm x 50.8 mm
(2" × 2") and standing at a mere
18.3 mm (0.72"). The MAC is the world’s
first commercially available rubidium
coherent population trapping atomic
clock. It consumes less power and has
wide-spectrum temperature operation.
This makes it useful for a range of timing
and synchronization applications—
wireless base stations, wire line network
infrastructure, defense systems, and test
and measurement devices. The small
size of the SA.3Xm enables it to be easily
mounted to a PCBA.
SA.31m
The SA.31m is targeted for applications
that require an economical solution
for frequency stability, such as audio
equipment in studio applications. It
can also be used as an independent
frequency source for next generation
base stations, smart grid infrastructure
and Enterprise network infrastructure.
It enables transition from costly TDM
backhaul transport to economic and
efficient Ethernet transport.
SA.33m
The SA.33m has superior aging and
tempco, and better stability and phase
noise than the SA.31m. The SA.33m
may be deployed in existing rubidium
applications such as extended holdover
(for CDMA/CDMA 2000 or WiMAX).
SA.35m
The SA.35m is the premium grade of
the entire SA.3Xm family. It has the
best tempco and greatest performance
amongst all the versions of the family.
The SA.35m is suited for applications
such as extended hold over for LTE-TDD
base stations and other applications
that require precision frequency and
long hold-over. Economical for its
performance level, the SA.35m delivers
premium performance at an excellent
price.
Applications
• Stand-alone (free-run) stable frequency
source for audio equipment, LTE base
stations, smart grid, and enterprise
network Infrastructure
• Extended holdover for CDMA and
WiMAX base stations
• Stability for various other
communication and transmission
applications
MICROSEMI [ MICROSEMI CORPORATION ]
