This 32.768 kHz MEMS TCXO is optimized for battery-powered timekeeping applications and uses a chip-scale package with a 1.2 mm² footprint. It operates from a 1.5 V to 3.63 V supply and draws a typical 0.99 µA core current at 1.8 V with no load. The device offers frequency-stability options from ±5 ppm to ±20 ppm, long-term jitter up to 2.5 µspp, and period jitter of 35 ns RMS. It integrates internal power-supply filtering, does not require an external Vdd bypass capacitor in normal operation, and is specified as Pb-free, RoHS compliant, and REACH compliant.
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Sitime SiT1552AI-J1-DCC-32.768 technical specifications.
| Output Frequency | 32.768kHz |
| Frequency Stability Options | ±5 to ±20ppm |
| Operating Supply Voltage | 1.5 to 3.63V |
| Core Supply Current (typ) | 0.99µA |
| Power-Supply Ramp | 100 maxms |
| Start-up Time | 180 typ, 300 maxms |
| Long-Term Jitter | 2.5 maxµspp |
| Period Jitter | 35 typns RMS |
| LVCMOS Rise/Fall Time | 100 typ, 200 maxns |
| Output Clock Duty Cycle | 48 to 52% |
| Output Voltage High | 90 min% of Vdd |
| Output Voltage Low | 10 max% of Vdd |
| HBM ESD Protection | 3000V |
| CDM ESD Protection | 750V |
| Mechanical Shock Resistance | 10000g |
| Mechanical Vibration Resistance | 70g |
| Storage Temperature | -65 to 150°C |
| RoHS | Compliant |
| REACH | Compliant |
| Pb-free | Yes |
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