SY87701ALZG-TR

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Clock/Timing - Application Specific products are designed to address specific application needs that require precise timing and synchronization. In this article, we will discuss the application field and working principle of the SY87701ALZG-TR.

SY87701ALZG-TR is a fully integrated and configurable Clock Multiplier and Divider (CMDC) for demanding precision and low power with galvanic isolation. It is ideal for frequency up conversion from Single Input Frequency (SIF) to dual or multiple outputs. The device achieves <1ppm jitter, <100ppm accuracy, and fast frequency switching. CMDCs are used in various fields such as communications, broadcast transmission, automotive, healthcare, and industrial equipment.

The SY87701ALZG-TR features a three-wire interface that connects to an external complex programmable logic device (CPLD). This interface allows the user to configure the device to produce the required multiplied or divided frequency output. In addition, the device features a low power mode and a forced power down mode.

The SY87701ALZG-TR utilizes a novel Dual-Stage Digital Phase Locked Loop (DD-PLL) architecture. This architecture enables the device to support a wide range of frequency operations and provides superior jitter performance. The DD-PLL comprises two tightly coupled digital PLLs (DPLLs) for each output. The first DPLL acts as a coarse clock synthesizer and the second DPLL acts as a fine clock synthesizer.

The DD-PLL enables superior jitter performance due to its lower reference clock noise. This is achieved because the DD-PLL locks onto the fundamental of the reference clock, which allows the reference clock\'s noise to be filtered out. In addition, the DD-PLL allows for fast frequency switching and superior jitter performance.

The SY87701ALZG-TR has a wide input clock frequency range of 20 kHz to 1 MHz. It can output frequencies between 800 kHz to 8.5 MHz. It also features a selectable output divider of 1/2, 1/3, 1/4, 1/5, and 1/6. This allows the user to divide the output frequency to a lower frequency if needed.

In addition, the device features an embedded temperature sensor to monitor the device temperature and detect temperature extremes. It has an operating temperature range of -40°C to +85°C, with 10°C hysteresis. This helps to ensure reliable performance and accurate frequency operations.

The SY87701ALZG-TR is designed for high reliability and low power performance. It features an enhanced robust sleep mode and dynamic frequency switching. The device is RoHS and REACH compliant and meets the requirements of EMC and ISO/TS 16949 standards.

In conclusion, the SY87701ALZG-TR is a fully integrated and configurable Clock Multiplier and Divider for demanding precision and low power with galvanic isolation. It utlizes a novel Dual-Stage Digital Phase Locked Loop (DD-PLL) architecture that enables it to support a wide range of frequency operations and provides superior jitter performance. It can be used in various fields such as communications, broadcast transmission, automotive, healthcare, and industrial equipment.

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