This 32.768 kHz MEMS oscillator is designed as a quartz crystal replacement for battery-powered and mobile timekeeping applications. It operates from 1.2 V to 3.63 V, with support for -40°C to +85°C operation at 1.5 V to 3.63 V, and delivers 20 ppm room-temperature tolerance with up to 100 ppm stability over the full industrial range. Typical core current is 0.90 µA at 1.8 V with no load, and the device provides NanoDrive programmable output swing to reduce power consumption. The 2.0 x 1.2 mm 2012 SMD package is pin-compatible with existing 32 kHz XTAL footprints, and the oscillator output eliminates external load capacitors while internal filtering removes the usual need for a bypass capacitor.
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Sitime SiT1533AI-H4-D74-32.768 technical specifications.
| Output Frequency | 32.768kHz |
| Frequency Tolerance | 20ppm |
| Frequency Stability | 100ppm |
| Operating Supply Voltage | 1.2 to 3.63V |
| Operating Temperature Range | -40 to 85°C |
| Core Operating Current | 0.90 typµA |
| Output Stage Operating Current | 0.065 to 0.125µA/Vpp |
| Start-up Time | 180 typ, 300 maxms |
| Output Rise/Fall Time | 100 to 200ns |
| Output Clock Duty Cycle | 48 to 52% |
| Programmable Output Swing | 0.20 to 0.80V |
| Period Jitter | 35ns RMS |
| HBM ESD Protection | 3000V |
| Storage Temperature | -65 to 150°C |
| Pb-free | Yes |
| RoHS | Compliant |
| REACH | Compliant |
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