DS4250D+

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The DS4250D+ is a programmable timer and oscillator with multiple applications in many different fields. It can help automate and control tasks, provide accurate time delays and pulse widths, and generate precise frequencies. It is designed to provide reliable time intervals and pulse widths by producing a precise waveform with a minimum of jitter from an exceedingly stable clock.

Applications

The applications for the DS4250D+ are wide-ranging. They include, but are not limited to, precision timing for communication systems and frequency regulation for power networks. Additionally, it can be used for timing control in test and measurement applications, PLLs, and digital logic circuits.

In data communications, the DS4250D+ can be used as an accurate and stable timing reference for baseband data transceivers and multiplexers. In power networks, the oscillator can be used to regulate and control the frequency of AC supplies. It can also be used to ensure precise signals in modern day power systems.

The DS4250D+ is also suitable for telecommunication networks, such as for timing distribution in synchronous networks using Synchronous Digital Hierarchy (SDH). Additionally, its precision timing output is well suited for cable television systems.

Medical device applications can benefit from the DS4250D+ as well, since it can generate precise timing signals for medical devices and equipment. Also, it can help in the automation of medical processes, such as monitoring of vital signs.

Design

The DS4250D+ features a small footprint, which makes it suitable for use in space-constrained applications. It is designed to operate in a wide range of temperatures, from -45 °C to 85 °C. The device also features an extended power supply range and is capable of generating up to five precise frequencies.

The device integrates a 4-stage frequency synthesizer and programmable oscillator, high-stability clock, internal voltage regulator, and a selectable low-dropout regulator. It also includes two programmable pins for pull up, pull down, and output enable/disable functions.

Working Principle

The internal frequency synthesizer of the DS4250D+ uses fractional-N tuning to generate precise and stable frequencies. An appropriate voltage regulator supplements the internal clock signal to ensure the clock oscillates within a precise range. The internal synthesizer then uses dual-modulus prescalers and PLLs to lock the clock onto a precise frequency.

This frequency is then converted to a digital signal with its associated digital logic. This signal is then fed into the programmable oscillator which further fine-tunes the signal before it is output. The oscillator is also designed to have extremely low jittering.

The DS4250D+ also features an integrated input loop-filter. This helps reduce noise on the output signal and ensures that the generated frequency is precise and stable. Additionally, this setup eliminates the need for an external loop filter.

Conclusion

The DS4250D+ is a programmable timer and oscillator that is used in many different applications, from data communications and power networks to medical devices and equipment. It is designed with a small footprint and has an extended temperature range. Furthermore, it has a 4-stage frequency synthesizer and a programmable oscillator, which ensures that its generated signal is precise and has low jitter. Its integrated input loop-filter helps eliminate the need for an external loop filter.

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