090-03240-001

Overview

The Microchip Technology 090-03240-001 is a RoHS-compliant Chip-Scale Atomic Clock (CSAC) based on the SA.45s technology, designed for portable applications requiring high frequency stability with minimal power consumption. Operating at an input voltage of 3.3 VDC, it delivers a 10 MHz CMOS-compatible RF output and a 1PPS output. The device features short-term stability with an Allan Deviation of 3.0 × 10⁻¹⁰ at τ = 1 sec and typical long-term aging of less than 9 × 10⁻¹⁰ per month. It includes an RS-232 interface for monitoring and control, supporting synchronization via a 1PPS input.

Feature Summary

• Ultra-low power consumption of less than 120 mW during operation
• Compact volume under 17 cc (1.6" × 1.39" × 0.45")
• Short-term stability (Allan Deviation) of 3.0 × 10⁻¹⁰ at τ = 1 sec
• Built-in RS-232 serial interface for calibration and status monitoring

Applications

• GPS receivers
• Backpack radios
• Anti-IED jamming systems
• Autonomous sensor networks
• Unmanned vehicles

Procurement Notes

Verify that the specific part number 090-03240-001 corresponds to the RoHS-compliant version with the 10 MHz output option. Confirm environmental ratings match application requirements, specifically the operating temperature range of –10 °C to 70 °C. Ensure host PCB mounting complies with FCC Class B radiated emission standards.

Selection Notes

Select this model when a RoHS-compliant atomic clock is required for space-constrained designs. Compare against option 003 if a 16.384 MHz output frequency is needed instead of the standard 10 MHz. Consider the warm-up time of less than 180 seconds for system startup timing constraints.

Part Context

This component belongs to the SA.45s series of Chip-Scale Atomic Clocks manufactured by Microchip Technology. It represents a miniaturized vacuum microelectromechanical systems (MEMS) atomic clock solution, bringing atomic-level accuracy to portable electronics previously limited to larger quartz oscillators or rubidium standards.

Replacement Considerations

The datasheet lists part number 090-02984-001 as the non-RoHS compliant equivalent offering the same 10 MHz output. Option 090-03240-003 provides the same form factor but with a 16.384 MHz output frequency.