Product Overview
The Si MEMS Oscillator Series 7NM is a surface mountable oscillator designed for various electronic applications. It features an epoxy molding and a 5.0x3.2mm package, offering a stable and reliable frequency output. This series is suitable for applications requiring precise timing and low power consumption, with a wide operating temperature range and robust environmental resistance.
Product Attributes
- Brand: SJK
- Series: 7NM
- Technology: MEMS Oscillator
- Packaging: Epoxy Molding, Surface Mount
- Package Size: 5.0x3.2mm
- Crystal Cutting Type: AT CUT (thickness shear mode)
- Environmental Compliance: RoHS, REACH, HF
- Moisture Sensitivity Level: Level 1
- Minimum Packaging: 1000pcs/reel
Technical Specifications
| Parameter | Symbol | Min | Type | Max | Units | Notes |
|---|---|---|---|---|---|---|
| Nominal Frequency | 25.000625 | MHz | ||||
| Frequency Stability at 25 | 10 | PPM | ||||
| Frequency Stability Over Operating Temperature Range | 15 | PPM | ||||
| Operating Temperature | Topr | -40 | 25 | 85 | ||
| Storage Temperature | Tstg | -55 | 125 | |||
| Supply Voltage | VDD | 1.62 | 3.3 10% | 3.63 | V | |
| Input Current | Icc | 10 | mA | |||
| Enable Control | Yes | Pad1 | ||||
| Output Load: CMOS | CL | 15 | pF | |||
| Output Voltage High | VoH | 90% | Vdd | |||
| Output Voltage Low | VoL | 10% | Vdd | |||
| Rise Time | Tr | 5 | ns | 10%90%VDD Level | ||
| Fall Time | Tf | 5 | ns | 90%10%VDD Level | ||
| Symmetry (Duty ratio) | TH/T | 45 | ~ 55 | % | ||
| Start-up Time | Tosc | 10 | ms | |||
| Enable Voltage High | Vhi | 70% | Vdd | |||
| Disable Voltage Low | Vlo | 30% | Vdd | |||
| Aging (1st Year at 25) | 3 | ppm/yr. | ||||
| Output Disable Delay Time | T off | 150 | us | |||
| Output Enable Delay Time | T on | 150 | us | |||
| Phase Jitter (12KHz~20MHz) | 0.5 | 1.0 | ps |
Dimensions
Units: mm
5.0 x 3.2
Test Conditions
Standard Atmospheric Conditions:
- Ambient temperature: 255
- Relative humidity: 40%~70%
Measurement Limits (if doubt):
- Ambient temperature: 253
- Relative humidity: 40%~70%
Measurement Equipment: MD 37WX-05M or equivalent.
Application Notes
Control Input (Output Enable/Disable):
- Logic 1 or open on Pad 1: Oscillator output enabled.
- Logic 0 on Pad 1: Disable output to high impedance.
Waveform Measurement System: Minimum bandwidth of 5 times the frequency being tested.
Output Enable/Disable Delay: Oscillator timing during normal operation. When the device is in standby, the oscillator stops. Upon release from standby, the oscillator starts and provides a stable output after a short delay.
Reliability Testing
Mechanical Endurance:
- Drop Test: 75 cm height, 3 times on concrete floor (JIS C6701).
- Mechanical Shock: Half sine wave (1000 G), 0.5ms duration, 3 times on each of three mutually perpendicular axes (MIL-STD-202F).
- Vibration: 10 ~ 2000 Hz frequency range, 1.52 mm/20G amplitude, 20 minutes sweep time per axis, 4 hours per axis (Total 12 hours) (MIL-STD-883E).
- Gross Leak: Standard Sample for Automatic Gross Leak Detector, Test Pressure: 2kg/cm (MIL-STD-883E).
- Fine Leak: Helium Bombing 4.5 kgf/cm for 2 hours.
- Solderability: 245 5 temperature, 0.5 mm minimum immersing depth, 5 1 seconds immersion time, Rosin resin methyl alcohol solvent (1:4) flux (MIL-STD-883E).
Environmental Endurance:
- Resistance To Soldering Heat: Pre-heat 125 (60-120 sec), Test 260 5 (10 1 sec) (MIL-STD-202F).
- High Temp. Storage: +125 3 for 1000 12 Hrs (MIL-STD-883E).
- Low Temp. Storage: -40 3 for 1000 12 Hrs (MIL-STD-883E).
- Thermal Shock: 100 cycles of specified temperature cycle (MIL-STD-883E).
- Pressure Cooker Storage: 121 3, RH100%, 2 bar, 240 Hrs (JIS C6701).
- High Temp & Humidity: 85 3, RH 85%, 1000 Hrs (JIS C5023).
2304131800_SJK-7NM25000AC33YC_C668818.pdf
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