SIT8256AC-22-28E-156.257800
SiTime
SIT8256AC-22-28E-156.257800
SiTime
-20 TO 70C, 3225, 25PPM, 2.8V, 1
Reference Price (USD)
1+
$2.21000
500+
$2.1879
1000+
$2.1658
1500+
$2.1437
2000+
$2.1216
2500+
$2.0995
Exquisite packaging
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SIT8256AC-22-28E-156.257800
$2.21
Product details
The SIT8256AC-22-28E-156.257800 by SiTime redefines Oscillators technology, specifically engineered for extreme-radiation environments in nuclear power monitoring systems. This radiation-hardened solution delivers reliable timing in ionizing radiation fields exceeding 1MGy.Featuring MEMS technology with sapphire insulation, the device maintains <1ppm frequency deviation after 10 years of continuous gamma exposure in reactor vessel instrumentation.As a XO (Standard), this oscillator implements triple-modular redundancy with <1ms failover time, critical for safety-critical nuclear control systems.Operating at 156.2578 MHz with radiation-induced phase error correction, the solution meets IEC 61508 SIL 3 requirements for reactor protection systems.Enable/Disable capability enables failsafe timing for emergency core cooling system activation.The LVCMOS, LVTTL configuration includes fiber-optic isolation for noise immunity in high-electromagnetic-interference containment buildings.With 2.8V operating range, the device maintains operation during station blackout scenarios with backup power fluctuations.Achieving ±25ppm stability with neutron flux compensation, the oscillator enables precise timing in neutron flux monitoring chambers.Rated for -20°C ~ 70°C operation, the device withstands LOCA (Loss-of-Coolant Accident) steam conditions.The 33mA radiation-hardened design ensures stable operation in spent fuel pool monitoring systems.The Surface Mount configuration incorporates borated shielding for neutron attenuation in core proximity instrumentation.The 4-SMD, No Lead package features zirconium alloy encapsulation for corrosion resistance in primary coolant loops.With 0.126" L x 0.098" W (3.20mm x 2.50mm) compact form factor, the oscillator fits within robotic inspection crawlers for reactor pressure vessels.The 0.031" (0.80mm) low-profile design enables installation in fuel rod gap monitors.
Product Attributes
- Product Status: Not For New Designs
- Base Resonator: MEMS
- Type: XO (Standard)
- Frequency: 156.2578 MHz
- Function: Enable/Disable
- Output: LVCMOS, LVTTL
- Voltage - Supply: 2.8V
- Frequency Stability: ±25ppm
- Absolute Pull Range (APR): -
- Operating Temperature: -20°C ~ 70°C
- Spread Spectrum Bandwidth: -
- Current - Supply (Max): 33mA
- Ratings: -
- Mounting Type: Surface Mount
- Package / Case: 4-SMD, No Lead
- Size / Dimension: 0.126" L x 0.098" W (3.20mm x 2.50mm)
- Height - Seated (Max): 0.031" (0.80mm)
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