This 32.768 kHz Super-TCXO provides ±5 ppm all-inclusive frequency stability for RTC reference applications in battery-powered devices. It uses a 1.5 x 0.8 mm chip-scale package and typically draws 4.5 µA with no load across a 1.62 V to 3.63 V supply range. The LVCMOS output delivers low jitter with 2.5 ns RMS integrated phase jitter and starts up in 300 ms typical. This commercial-temperature option is specified for -20 °C to +70 °C operation and suits wearables, utility meters, and IoT nodes.
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Sitime SiT1566AC-JE-33E-32.768 technical specifications.
| Output Frequency | 32.768kHz |
| Total Frequency Stability | ±5ppm |
| Operating Supply Voltage | 1.62 to 3.63V |
| Typical Supply Current | 4.5µA |
| Maximum Supply Current | 5.3µA |
| Start-up Time | 300ms |
| Operating Temperature Range | -20 to +70°C |
| Integrated Phase Jitter | 2.5ns RMS |
| RMS Period Jitter | 4ns RMS |
| Peak-to-Peak Period Jitter | 35ns p-p |
| Clock Duty Cycle | 45 to 55% |
| Output Rise/Fall Time | 9 to 20ns |
| Output Voltage High | 90% Vdd |
| Output Voltage Low | 10% Vdd |
| First Year Frequency Aging | ±1ppm |
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