This temperature-compensated MEMS oscillator provides a fixed 32.768 kHz output for low-power timekeeping applications. It operates from a 1.5 V to 3.63 V supply and draws 0.99 µA typical core current at 1.8 V with no load. The device is offered in a 1.5 mm × 0.8 mm chip-scale package and supports commercial and industrial temperature ranges up to -40°C to +85°C. Frequency stability options reach as tight as ±5 ppm over temperature, and the datasheet specifies up to 300 ms start-up time through +60°C. The output is programmable, and the device is specified as Pb-free, RoHS compliant, and REACH compliant.
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Sitime SiT1552AC-J1-DCC-32.768 technical specifications.
| Output Frequency | 32.768kHz |
| Frequency Stability Over Temperature | ±5 / ±10 / ±20ppm |
| Frequency Stability vs Voltage | ±0.75 at 1.8 V ±10%; ±1.5 over 1.5 V to 3.63 Vppm |
| First Year Frequency Aging | ±1ppm |
| Long Term Jitter | 2.5 maxµspp |
| Period Jitter | 35 typns RMS |
| Operating Supply Voltage | 1.5 to 3.63V |
| Core Supply Current | 0.99 typµA |
| Start-up Time at Power-up | 180 typ, 300 maxms |
| Operating Temperature Range | 0 to 70 / -40 to 85°C |
| Output Duty Cycle | 48 to 52% |
| LVCMOS Rise/Fall Time | 100 typ, 200 max at 15 pF loadns |
| ESD Protection HBM | 3000V |
| Mechanical Shock Resistance | 10000g |
| Package Size | 1.5 x 0.8mm |
| RoHS | Compliant |
| REACH | Compliant |
| Pb-free | Yes |
Download the complete datasheet for Sitime SiT1552AC-J1-DCC-32.768 to view detailed technical specifications.
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