This MEMS programmable oscillator supports factory-programmed output frequencies from 1 Hz to 32.768 kHz in powers of two. It operates from a 1.2 V to 3.63 V supply and is designed for ultra-low power operation with 0.9 µA typical core current at 25°C and 1.8 V. The device offers 20 ppm frequency tolerance at 25°C and stability options down to 75 ppm over temperature and voltage conditions. Its oscillator output eliminates external load capacitors, and the internal filtering removes the need for an external bypass capacitor under normal operating conditions. NanoDrive programmable output swing is provided to reduce power consumption in low-voltage timing applications.
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Sitime SIT1534AI-H4-DCC-00.256 technical specifications.
| Programmable output frequency | 1 to 32768Hz |
| Frequency tolerance | 20ppm |
| Frequency stability | 75ppm |
| Operating supply voltage | 1.2 to 3.63V |
| Core operating current | 0.9 typµA |
| Output stage operating current | 0.065 typµA/Vpp |
| Power-supply ramp | 100ms |
| Start-up time | 300 + 1 period typ at 25°Cms |
| LVCMOS rise/fall time | 100 to 200ns |
| Output duty cycle | 48 to 52% |
| Programmable output swing | 0.20 to 0.80V |
| Programmable output voltage high range | 0.60 to 1.225V |
| Programmable output voltage low range | 0.35 to 0.80V |
| Programmable output swing tolerance | ±0.055V |
| Period jitter | 35ns RMS |
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