LMH0341SQE/NOPB

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Application Field and Working Principle of LMH0341SQE/NOPB

The LMH0341SQE/NOPB is a high speed, low power differential line driver used to interface digital signals between a device or circuit and a transmission line, usually to reduce the effects of system noise, electro-magnetic interference, and crosstalk. It is a high performance, integrated monolithic device designed for the transmission of fast and low-skew data, such as DVI and HDMI signals.

The high speed capability of the LMH0341SQE/NOPB is made possible by an internal termination resistor and high performance P-channel output driver. This allows for higher-speed data transmission with minimal system noise, electro-magnetic interference, and crosstalk. The internal termination resistor is a non-negotiable feature and provides a stable 50 ohm termination to the transmission line in order to reduce reflection, noise, and crosstalk.

The LMH0341SQE/NOPB device also includes an array of integrated protector pins to protect any data lines connected to it from over-current and/or voltage surges. The device includes a low-voltage differential signaling (LVDS) interface, a low-power differential line driver, and a programmable digital input to allow flexibility in data rate and clock frequency. LVDS provides very low-level noise and very low power consumption for high speed data rate.

The device also has the flexibility to be hooked up in either single-ended or differential mode. In single-ended mode, the internal termination resistor is not present and the device’s output impedance is either 50 Ω or 100 Ω depending on the user’s selection. In differential mode, the internal termination resistor is present, the device’s output impedance is 50 Ω, and the termination is non-negotiable. The device’s outputs have a maximum speed of 2.1 GHz, allowing for transmission of signals with minimal noise, interference, and crosstalk.

The LMH0341SQE/NOPB differential line driver is also compatible with both current-mode logic (CML) and voltage-mode logic (BTL) systems. The device features the ability to switch between the two logic modes. The CML mode has a low output impedance, which allows for low-level noise transmission, while the BTL mode offers a high output impedance, making it suitable for high speed data transmission. Both modes offer low power consumption.

The device also includes a differential enable/disable pin that allows users to adjust the device’s output voltage level. This allows the user to tailor the output voltage of the device to the particular requirements of the system in terms of speed and power consumption. In addition, the enable/disable pin includes hysteresis, which allows the device to reduce power consumption by allowing only a single output transition per cycle.

In summary, the LMH0341SQE/NOPB is a low-power, high-performance differential line driver that can be used to interface digital signals between a device or circuit and a transmission line. It features a high speed capability with very low power consumption and integrates protector pins for over-current and voltage surge protection. It also allows for flexibility in data rate and clock frequency, including both current-mode and voltage-mode logic systems, and provides a low-voltage differential signaling for low-level noise and power consumption.

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