SI53325-B-GMR

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The SI53325-B-GMR is a high-speed, low-voltage differential line receiver designed to decode high-speed serial data streams. It is a part of the CMOS clock/timing product family of the Analog Devices, and is specifically designed for use in the clock buffer, driver and receiver products. This article will discuss the features and working principle of the SI53325-B-GMR.

Features

The SI53325-B-GMR is a differential line receiver with an operating voltage range of 1.2V to 3.6V. It is designed to drive and synchronize high-speed serial data streams over longer distances using either single-ended or differential signaling. It features two input ports and two output ports; inputs are capable of unidirectional logic levels between 1.2V and 3.6V, and outputs are capable of bidirectional logic levels between 0V and 3.6V. The receiver also provides adjustable input threshold options, programmable hysteresis, and distributed voltage translation.

The SI53325-B-GMR is designed to withstand noise and interference from adjacent channels, and also offers a “power-on-reset” feature to ensure proper initialization at start-up. The receiver supports various protocols, including the G.fast, ITU-T G.997.1, PON, EIFB, GEMe2e, Ethernet, PON, and other wide-port high speed protocols. It also supports frequencies of up to 10.3125 Gbps.

Working Principle

The SI53325-B-GMR is a differential line receiver; it is designed to accept a differential signal (or a signal on a single line) and convert that signal into digital logic levels for further signal processing. The input signal is compared to an internal reference voltage and the output signal is set accordingly.

The device is designed to operate at very low voltage levels (<1V). In order to achieve this, the SI53325-B-GMR incorporates a distributed voltage translation architecture. The translation voltage (VOUT) is generated on-chip, and is adjustable via an external resistor. VOUT is then distributed between the input and output ports to achieve the desired logic levels.

The SI53325-B-GMR employs a programmable hysteresis feature to reduce the effect of noise and crosstalk. The receiver also supports a wide variety of input threshold voltages, allowing it to be optimized for various applications. Additionally, the device is designed with built-in power-on-reset circuitry, which ensures that all logic levels are reset when the device is powered on.

Overall, the features and working principle of the SI53325-B-GMR make it a suitable choice for a wide variety of clock/timing applications, from signalling over long distances, to driving clock buffers and receivers. The device’s low voltage, wide frequency support, adjustable input threshold, and power-on-reset features make it an attractive choice for those looking to drive high speed data streams and protect their components from noise and interference.

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