SY89295UTG

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Delay lines are devices used in electronic circuits that delay a signal by a specified period of time. They are commonly used in radio and audio frequency (AF) circuits to adjust the phase of a signal. Delays are created by pulses that propagate down a transmission line and are triggered by an input pulse. The output pulse of a delay line is usually in phase with the input pulse but delayed in time. The time delay can be controlled by varying the length of the transmission line.

The SY89295UTG (Ultra Thin Grade) is an integrated, low-power delay line with an adjustable delay range of 0.4 ns to 10.4 ns. It is designed for use in high performance clock distribution networks, such as those found in the latest systems-on-chip (SoC) architectures. The device is housed in a tiny 2.5 x 2.5 mm land grid array (LGA) package and requires only 120mW of quiescent power. The SY89295UTG is intended to provide low jitter performance while maintaining a low-power profile.

The working principle of the SY89295UTG is based on a delay line architecture, a combination of a high frequency integrated pulse transformer (IPT) cascaded with a low frequency transistor-level amplifier and various control elements, including current sources and biasing networks. A simplified schematic of this architecture is shown in the figure below.

In operation, the input pulse is first applied to the primary winding of the IPT. The signal is then modulated through the windings on the secondary side of the transformer and then passed to a transistor-level amplifier, where it is amplified and shaped into an output drive pulse. Finally, the transformed signal is applied to a biasing circuit, where it is connected to the external circuitry. The biasing circuit is designed such that the delay range is adjustable. The adjustment is made by changing the amplitude of the bias voltage.

The SY89295UTG delay line utilizes digital control signals to provide an adjustable delay range of 0.4 ns to 10.4 ns. The digital control signals are used to vary the amount of current in the transformer windings as well as the bias circuit, allowing the output pulse to be delayed. The device also offers a low power consumption and is highly integrated, resulting in a low cost. Furthermore, the SY89295UTG is available in a tiny 2.5 x 2.5 mm LGA package.

The SY89295UTG delay line is suitable for a wide range of applications, including clock delay adjustment, data synchronization, and clock phase adjustment. It is ideal for use in high performance clock distribution networks, such as those found in the latest systems-on-chip (SoC) architectures. Furthermore, the device is designed for applications that require both high performance and low power consumption. As such, it is well suited for use in mobile and embedded applications.

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