Microchip CSAC-SA45S Handleiding

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SA.45s CSAC and RoHS CSAC

Opons 001 and 003

Chip-Scale Atomic Clock

microchip.com

Features

• Power consumption <120 mW

• Less than 17 cc volume,

1.6" × 1.39" × 0.45"

• 10 MHz CMOS-compatible output

• 1PPS output and 1PPS input for synchronization

• RS-232 interface for monitoring and control

• Short term stability (Allan Deviation) of 3.0 × 10–10 at τ =1

sec

• Applications1

• GPS receivers

• Backpack radios

• Anti-IED jamming systems

• Autonomous sensor networks

• Unmanned vehicles

• Underwater sensor systems

• Stability for various other communication and transmis-

sion applications

• RoHS-Compliant CSAC

• RoHS 2 (Directive 2011/65/EU)

• Wide storage temperature: 100 °C

1

The CSAC is not tested, qualied, or rated for space applications.

With an extremely low power consumption of <120 mW and

a volume of <17 cc, the Microchip SA.45s Chip Scale Atomic

Clock (CSAC) brings the accuracy and stability of an atomic

clock to portable applications for the rst time. The CSAC is

also available in a RoHS-compliant form.

The SA.45s provides RF and 1PPS outputs at standard CMOS

levels, with short-term stability (Allan Deviation) of 3.0 × 10

–10

at τ = 1 sec, typical longterm aging of <9 × 10–10/month, and

maximum frequency change of ±5 × 10–10 over an operating

temperature range of –10°C to 70°C.

The SA.45s CSAC accepts a 1PPS input that may be used to

synchronize the unit’s 1PPS output to an external reference

clock with ±100 ns accuracy. It also use the 1PPS input to

discipline its phase and frequency to within 1 ns and 1.0 ×

10–12, respectively.

A standard CMOS-level RS-232 serial interface is built in to

the SA.45s. This is used to control and calibrate the unit and

also to provide a comprehensive set of status monitors. The

interface is also used to set and read the CSAC’s internal

time-of-day clock.

Product specificaties