090-02789-002 Microchip Integrated Circuit In Stock
Microchip 090-02789-002 is a Chip Scale Atomic Clock (CSAC-SA65 Option 002) producing a 10 MHz CMOS output with atomic-level frequency stability in a compact through-hole package. It measures 40.64 mm x 35.306 mm x 11.43 mm and provides rise and fall times under 10 ns for precision timing applications. Designed for GPS receivers, military communications, and portable instrumentation requiring ultra-stable frequency references.
- Manufacturer
- Microchip
- Package
- —
- Pin Count
- 1
- Lifecycle
- ACTIVE
- Datasheet
- 090-02789-002 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 80.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Atomic clock accuracy in a miniaturized 40.64 mm x 35.306 mm x 11.43 mm chip-scale package for portable and embedded precision timing
- 10 MHz CMOS output with rise and fall times of 10 ns maximum enables direct interface with digital timing circuits
- Through-hole DIP-compatible mounting (DIP9/12, 1.3, 200 mil row) simplifies integration into existing PCB footprints designed for large oscillators
- No mechanical frequency adjustment required, ensuring factory-set atomic-accuracy stability without field calibration
- Long-term frequency stability far exceeding TCXO or OCXO references makes it ideal for GPS-denied navigation and holdover timing
Applications
The Microchip 090-02789-002 CSAC-SA65 is used in GPS-denied navigation systems, military and defense communications equipment, and portable precision timing instruments where atomic clock stability must be maintained in a small, low-power form factor. Its 10 MHz CMOS output directly drives frequency synthesizers, ADC sample clocks, and network synchronization circuits in field-deployed systems. Applications such as unmanned vehicle navigation, portable spectrum analyzers, and timing holdover modules for telecom base stations rely on its atomic accuracy to maintain microsecond-level synchronization during GPS outages.
Specifications
| Factory Lead Time | 26Weeks |
| YTEOL | 20 |
| Fall Time-Max | 10ns |
| Frequency Adjustment-Mechanical | NO |
| Mounting Feature | THROUGH HOLE MOUNT |
| Operating Frequency-Nom | 10MHz |
| Oscillator Type | CMOS |
| Package Equivalence Code | DIP9/12,1.3,200 |
| Physical Dimension | 40.64mm x 35.306mm x 11.43mm |
| Rise Time-Max | 10ns |
| Screening Level | MIL-STD-810; MIL-STD-202 |
| Supply Voltage-Max | 3.4V |
| Supply Voltage-Min | 3.2V |
| Supply Voltage-Nom | 3.3V |
| Surface Mount | NO |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Country of Origin | USA |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What output frequency and signal type does the Microchip 090-02789-002 CSAC produce?
The 090-02789-002 generates a 10 MHz CMOS output signal with rise and fall times of 10 ns maximum, making it directly compatible with standard digital logic and frequency synthesis circuits. The 10 MHz reference can be used to discipline PLLs, drive ADC sample clocks, and synchronize digital subsystems in precision timing applications requiring atomic frequency accuracy rather than the parts-per-million stability of a TCXO or OCXO.
How does the physical size of the 090-02789-002 compare to a standard OCXO, and what mounting interface does it use?
The 090-02789-002 measures 40.64 mm x 35.306 mm x 11.43 mm, which is significantly smaller than most 1-inch or 2-inch cube OCXO modules while still providing atomic clock stability. It uses a through-hole DIP-compatible footprint (Package Equivalence Code DIP9/12, 1.3, 200 mil row spacing), allowing it to mount on standard PCBs with through-hole pads or into DIP sockets without requiring a custom PCB land pattern.
Which precision timing and navigation applications benefit most from the CSAC-SA65 atomic frequency reference?
GPS-denied navigation systems in unmanned aerial vehicles, portable electronic warfare receivers, and field-deployed network synchronization equipment benefit most from the 090-02789-002 CSAC. These applications require holdover frequency accuracy of better than 1 µs per day when GPS signals are unavailable, a performance level only achievable with an atomic reference. The 10 MHz atomic output also serves as a master clock for precision spectrum analyzers, frequency counters, and satellite ground terminals where long-term frequency drift must stay within a few parts in 10^10.
What lead time should procurement teams plan for when ordering the Microchip 090-02789-002?
The 090-02789-002 carries a factory lead time of approximately 26 weeks due to the specialized atomic physics assembly involved in producing chip-scale atomic clocks. Procurement teams for defense, aerospace, or telecom programs should plan buffer stock of at least 3 to 6 months ahead of production milestones and consider blanket purchase orders to secure allocation. The 26-week lead time also means that design changes requiring a frequency or output option swap should be finalized well before the production hardware freeze date.
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