EL1517ISZ-T7

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EL1517ISZ-T7 Application Field and Working Principle

The EL1517ISZ-T7 is a monolithic integrated circuit designed for interface applications, specifically in the area of drivers, receivers, and transceivers. It is designed to operate with low power consumption, making it well-suited for communications and consumer-level applications, as well as data conversion and RF applications.

The EL1517ISZ-T7 is a bipolar device consisting of two transceivers with complementary outputs, each in CMOS technology. The transceivers are controlled by Schottky TTL (STTL) input levels and sink 12mA of output. The differential inputs feature enhanced noise immunity and low offset voltage for stable operation over wide temperature ranges.

The circuit combines two complementary transceivers as well as two capacitively-coupled arrays, in which the individual transceivers can be programmed to work in a variety of modes. The integrated current sink ‐ source currents can be adjusted and programmed to meet the requirements of specific applications.

The EL1517ISZ-T7 is suitable for inductive and capacitive coupling, electromechanical controllers, motor control, power factor control, and regulation. It is also great for telecommunications use, as it\'s designed to reduce power consumption while still providing a high level of performance.

The EL1517ISZ-T7 has two transceiver pairs, each composed of two STTL transistors connected in parallel between the base of the drivers and the load. By controlling the bias current, which provides the driving current for the transceivers, the pair can be tuned to provide the desired gain.

When the device is idle, both drivers are turned off and the load impedance is at its highest level. When data is applied to the driver inputs, the bias current is adjusted to meet the applicable standards, as set by the user. This allows the circuit to maintain compatibility with higher ballast loads, enabling better matching of the load impedance.

The EL1517ISZ-T7 is designed with advanced features to reduce the current consumption and to increase the power efficiency. The active circuitry of the transceiver is designed to operate with a supply voltage of 4.0V, while consuming only 65mA of quiescent power.

In order to further reduce the overall power consumption, the input buffer of the transceivers is capable of operating in either the low-power or high-power mode. The low-power mode reduces the supply voltage from 4.0V to 3.0V, which has a significant impact on the overall power consumption. The high-power mode is used when transmissions are required to be made at higher speeds.

Another key feature of the EL1517ISZ-T7 is its low offset voltage, which is designed to ensure signal integrity and data transmission by maintaining signal levels even when external interferences are present. A 3-pin programmable pull-up resistor is included to compensate for high-impedance loads, enabling the device to handle a wide variety of applications.

In short, the EL1517ISZ-T7 is an ideal choice for a wide range of interface applications, from communications and consumer-level to data conversion and RF applications. Its low power consumption, wide compatibility and programmable pull-up resistor provide a great solution for designers in need of reliable, low-power transceivers.

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