AD8138ARZ-RL

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Introduction

AD8138ARZ-RL is a low-power, high-speed amplifier designed to operate within the radio frequency (RF), microwave, and millimeter wave frequency bands, typically 8-1000 MHz.

Application Fields

The AD8138ARZ-RL primarily finds application in aerospace, defense, test & measurement, digital radio, medical devices, and communications markets. The amplifier leverages an easy-to-use tri-level input configuration to enable power supply modulation, power limiting, and power sharing capabilities.

For example, the amplifier is well-suited for software-defined radio (SDR) applications with its high linear output power and wide input dynamic range. With a minimum of 17 dB gain and +18 dBm saturated output power, it helps to overcome losses in tight radar packaging. Likewise, the low additive noise makes the amplifier suitable for high-sensitivity receiver applications with its typically 0.3dB noise figure and low positive control pin current.

In the test & measurement arena, the power supply modulation capability of the amplifier lends itself to spectrum chirp applications, allowing for the generation of stepped frequency modulation waveforms. The low current draw of the amplifier and its integrated ESD protection further bolsters its appeal to this market segment.

The amplifier’s digital-friendly power control state-of-the-art architecture yields excellent linearity, MEMS and other microwave devices, allowing for both baseband and RF mixing applications. Another area where the AD8138ARZ-RL shines is in medical devices, such as fluid detection systems, as its wide input range and low power consumption make it an ideal choice. Finally, the amplifier also meets mobile base station specifications, making it an optimal solution for multi-mode, multi-band, multi-service mobile base stations.

Working Principle

The amplifier utilizes an easy-to-use tri-level input configuration that allows for power supply modulation, power limiting, and power sharing capabilities. At the heart of the amplifier is a mix of active and passive circuitry, which together form the amplification chain that delivers high performance with low current. The amplifier utilizes active components to facilitate the amplification and power levelling functions, while passive components such as inductors, resistors, and capacitors are used for filtering, impedance matching, and providing DC bias points.

The input port of the amplifier is a differential 2-pin configuration, allowing for both single-ended and balanced inputs and outputs. The input port has an adjustable bias point, allowing for power supply modulation and power limiting functions. The output port of the amplifier has a 3-pin single-ended configuration which allows for use with either balanced or single-ended devices. The output port is DC-coupled and can provide up to +18 dBm saturated output power.

The input of the amplifier is DC-decoupled, meaning that the input bias points can be adjusted to the desired power level. The power limiting is accomplished by modulating the power supply voltage; depending on the level of the voltage ranging from 1.15 to 1.65V, the power level of the resulting output can be predetermined. The amplifier incorporates integrated ESD protection, making it suitable for use in a wide range of applications.

The AD8138ARZ-RL also features a low-dropout linear regulator (LDO) to provide the amplifier with a constant power supply rail. The LDO is based on a low-noise, voltage-controlled current source topology, allowing for reduced noise and improved linearity, even at very low output power levels. The LDO also includes an integrated overcurrent protection, allowing for enhanced reliability and extended lifetime of the device.

Conclusion

The AD8138ARZ-RL is a high-performance, low-power amplifier that can be used for a variety of applications in the RF, microwave, and millimeter wave bands, including SDRs, test & measurement systems, medical devices, and communications systems. With its high linearity, low current draw, wide input dynamic range, and power limiting capabilities, the amplifier enables robust system performance in a variety of challenging situations.

The specific data is subject to PDF, and the above content is for reference