DS17285-5

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Real-time clocks (RTCs) are used for both timing and data tracking. They are embedded in all types of devices, from computers and smartphones to household appliances and industrial equipment. The DS17285-5 from Dallas Semiconductor is an RTC that has become popular in both embedded applications and industrial settings. This datasheet will look at the DS17285-5\'s application field and working principle.

The DS17285-5 is a five-volt powered versatile RTC capable of supplying reliable time and date information in multiple timezones through its integrated timekeeper register. It utilizes the I2C interface specifically designed for increased accuracy, low power consumption, and low noise. The clock has a time formatting capacity of 12-hour or 24-hour, and automatic leap year correction. It is designed to withstand temperatures ranging from -40 to +85 Celsius, and has a long operating lifetime of twenty years.

The DS17285-5 has a variety of application fields. It is most popularly used for precise data logging applications, measuring trends over time. Its precise timekeeping ability makes it ideal for water level monitoring, energy management systems, and tracking of system deviation. In the automotive industry, the RTC is used for engine control systems that require precise timing. It is also suitable for industrial automation, telecommunications, healthcare, and recording events with closed-circuit cameras.

The DS17285-5 has a dead-stop timekeeping accuracy of one-tenth of a second, making it a highly accurate RTC. The device consists of a precision timing oscillator, a differential amplifier stage, and a temperature control unit. A voltage regulator is also included, which ensures that the RTC is supplied with a consistent voltage, making it more robust and reliable.

The precision timing oscillator is the main component of the system, and is responsible for generating a precise periodic signal for timing purposes. The oscillator is calibrated to 32.768 kHz, a rate more accurate than quartz crystals, and is the basis for the accuracy of the RTC. The differential amplifier performs the frequency comparisons of the waveform, amplifying the waveforms and sending the amplified signal to the RTC.

The DS17285-5 also has a temperature control unit, which monitors the environmental temperature and preserves the accurate timekeeping performance of the RTC. The temperature control unit works by adjusting the voltage on the oscillator circuit, allowing the frequency to be accurately calibrated. This ensures optimal timekeeping performance regardless of the environmental temperature.

The DS17285-5 is an accurate, reliable and versatile RTC, and is suitable for use in a wide range of applications. Its precision oscillator, differential amplifier, and temperature control unit work together to ensure accurate and stable timekeeping performance, making it an excellent choice for embedded applications and industrial settings.

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