The SiT1552 is a 32.768 kHz MEMS TCXO designed for battery-powered timekeeping applications in a 1.5 x 0.8 mm chip-scale package. 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 starts to a valid output in 180 ms typical, provides 35 ns RMS period jitter and 2.5 µs peak-to-peak long-term jitter, and is specified for ±1.0 ppm first-year aging at 25°C. Internal power-supply filtering eliminates the need for an external Vdd bypass capacitor and the oscillator output is provided on a dedicated clock pin.
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Sitime SiT1552AI-J1-D74-32.768 technical specifications.
| Output Frequency | 32.768kHz |
| Operating Supply Voltage | 1.5 to 3.63V |
| Core Supply Current | 0.99 typµA |
| Core Supply Current | 1.52 maxµA |
| Frequency Stability vs Voltage | ±1.5ppm |
| First Year Frequency Aging | ±1.0ppm |
| Period Jitter | 35ns RMS |
| Long Term Jitter | 2.5µspp |
| Power-Supply Ramp | 100 maxms |
| Start-up Time at Power-up | 180 typms |
| Output Clock Duty Cycle | 48 to 52% |
| LVCMOS Output Rise/Fall Time | 100 typ, 200 maxns |
| HBM ESD Protection | 3000V |
| Storage Temperature | -65 to 150°C |
| Package Size | 1.5 x 0.8mm |
Download the complete datasheet for Sitime SiT1552AI-J1-D74-32.768 to view detailed technical specifications.
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