This device is a 32.768 kHz silicon MEMS oscillator intended to replace a tuning-fork crystal in battery-powered and backup-timed designs. It operates from a 1.2 V to 3.63 V supply, with specified 10 ppm frequency tolerance at 25°C and up to 100 ppm stability across -40°C to +85°C when operated from 1.5 V to 3.63 V. Typical core operating current is 0.90 μA at 1.8 V with no load, and the oscillator output can interface directly to XTAL inputs without external load capacitors. The 1.5 mm × 0.8 mm chip-scale package also integrates internal supply filtering to avoid an external bypass capacitor under normal operating conditions.
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Sitime SiT1532A-J4-0001 technical specifications.
| Output Frequency | 32.768kHz |
| Frequency Tolerance | 10ppm |
| Frequency Stability | 100ppm |
| Operating Supply Voltage | 1.2 to 3.63V |
| Core Operating Current | 0.90 typμA |
| Output Stage Operating Current | 0.065 to 0.125μA/Vpp |
| Start-up Time | 300 typ, 450 maxms |
| Power-Supply Ramp | 100 maxms |
| Output Duty Cycle | 48 to 52% |
| Period Jitter | 35ns RMS |
| Package Dimensions | 1.5 x 0.8mm |
| HBM ESD Protection | 3000V |
| CDM ESD Protection | 750V |
| Mechanical Shock Resistance | 10000g |
| Mechanical Vibration Resistance | 70g |
Download the complete datasheet for Sitime SiT1532A-J4-0001 to view detailed technical specifications.
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