090-03240-003

Overview

The Microchip Technology 090-03240-003 is a RoHS-compliant Chip-Scale Atomic Clock (CSAC) in the SA.45s series, housed in a 12-DIP module with 9 leads. It operates on a 3.3 VDC supply with power consumption under 120 mW and occupies less than 17 cc of volume. The device provides a 16.384 MHz CMOS-compatible RF output and a 1PPS output/input for synchronization. Short-term stability reaches 3.0 × 10⁻¹⁰ at τ = 1 sec, with long-term aging below 9 × 10⁻¹⁰/month. It features an RS-232 interface for control and monitoring.

Feature Summary

• RoHS 2 compliant chip-scale atomic clock with <120 mW power consumption
• 16.384 MHz CMOS RF output and 1PPS I/O for synchronization
• Short-term stability of 3.0 × 10⁻¹⁰ Allan Deviation at 1 second
• 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 090-03240-003 corresponds to the RoHS-compliant variant with the 16.384 MHz output frequency. Confirm package compatibility with the 12-DIP, 9-lead form factor. Ensure environmental requirements align with the specified operating temperature range of –10 °C to 70 °C. Check for any specific handling instructions regarding the atomic clock mechanism during assembly.

Selection Notes

Select this model when a low-power, portable atomic reference is required with a 16.384 MHz output. Compare against option 001 if a 10 MHz output is preferred instead. Consider the 12-DIP through-hole package for legacy or specific board layouts. Evaluate thermal constraints as the device generates heat during warm-up (<140 mW). Verify that the host system can accommodate the RS-232 communication protocol for configuration.

Part Context

This component belongs to the Microchip SA.45s family of Chip-Scale Atomic Clocks. The 090-03240-003 designation specifically indicates the RoHS-compliant version with a 16.384 MHz output frequency. It serves as a compact alternative to traditional oven-controlled crystal oscillators (OCXOs), offering superior stability in a significantly smaller footprint suitable for mobile and remote applications.

Replacement Considerations

The non-RoHS counterpart is the 090-02984-003. For a 10 MHz output requirement, consider the 090-03240-001 (RoHS) or 090-02984-001 (Standard). No direct cross-brand substitutes are documented; replacement requires matching the atomic clock technology and specific frequency output.