RTC and 32.768kHz Clocks
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32.768kHz oscillators with a wide range of current (<1µA to<400µA) and temperature stability (up to -40 to 105°C) offer designers opportunity to match requirements closely. -40 to 85°C temperature range AT-Cut quartz solutions achieve <50ppm over -40 to 85°C; IC's with EEPROM and Tuning fork or AT-Cut crystals achieve stabilities =5ppm.
32.768kHz oscillators with a wide range of current (<1µA to<400µA) and temperature stability (up to -40 to 105°C) offer designers opportunity to match requirements closely. -40 to 85°C temperature range AT-Cut quartz solutions achieve <50ppm over -40 to 85°C; IC's with EEPROM and Tuning fork or AT-Cut crystals achieve stabilities =5ppm.
| Series | Description | VC America Recommendations | Status | Datasheets |
|---|---|---|---|---|
| 8592 | RTC I2 C-bus*1 full feature/function clock IC 3ppm accuracy over temperature | ✅ Best of Class ❗ | Active |  8592.pdf |
| 8591 | RTC I2 C-bus*1 full function clock IC temperature compensated | Contact VC America | Active | |
| 7202H | 32.768 kHz <±50ppm 1.6~3.63V Low 7µA current using AT-Cut crystal and operation to 125°C | ✅ Best of Class ❗ | Active | |
| 5095 | Exceptional frequency stability over wide temperature range 32.768 kHz IC, compensated by EEPROM programming to ±10ppm -10°C to 60°C ±7ppm -40°C to 105°C | ✅ Best of Class ❗ for power and temperature stability | Active | 5095.pdf |
| 5091 | 32.768 kHz IC low 1 µA current, tuning fork and frequency adjust to improve accuracy and yields | ✅ tuning fork solution with excellent 25°C tolerance | Active | 5091.pdf |
| 5059H | 32.768 kHz <±50ppm 1.6~5.5V 60-70µA current and operation to 125°C | ✅ Good 125°C consider 7202H for lower power and 1.6-3.63V | Active | 5059H.pdf |
| 5029 | 32.768 kHz <±50ppm 2.25-3.6V 300-400µA current | New Designs: 5059H and 7202H | Active | 5029.pdf |
