This 32.768 kHz MEMS oscillator is designed as a quartz crystal replacement for RTC reference and battery-backed timekeeping circuits. It operates from 1.2 V to 3.63 V, draws 0.90 µA typical core current at 1.8 V, and supports direct connection to XTAL inputs without external load capacitors or a bypass capacitor. The device is offered in a 1.5 x 0.8 mm chip-scale package with 10 ppm initial tolerance and frequency stability up to 100 ppm from -40 °C to +85 °C at 1.5 V to 3.63 V. NanoDrive programmable output swing reduces power consumption, and period jitter is specified at 35 ns RMS.
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Sitime SiT1532AI-J4-D74-32.768 technical specifications.
| Oscillator Type | 32kHz XO |
| Output Frequency | 32.768kHz |
| Initial Frequency Tolerance | 10ppm |
| Frequency Stability | 75ppm |
| Frequency Stability Condition | -10 to +70 °C, 1.5 V to 3.63 V |
| Frequency Stability | 100ppm |
| Frequency Stability Condition | -40 to +85 °C, 1.5 V to 3.63 V |
| Frequency Stability | 250ppm |
| Frequency Stability Condition | -10 to +70 °C, 1.2 V to 1.5 V |
| Operating Supply Voltage | 1.2 to 3.63V |
| Core Operating Current | 0.90 typµA |
| Operating Temperature Range | -40 to +85°C |
| Package Size | 1.5 x 0.8mm |
| Output Clock Duty Cycle | 48 to 52% |
| Period Jitter | 35ns RMS |
| Aging, 1st Year | -1 to 1ppm |
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