HMC290E

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

Attenuators are basic units that are used to reduce the amplitude strength of a signal, either for calibration or for the purpose of protecting equipment from having to process a signal that is too powerful. In this article, we will look at HMC290E attenuator, its application fields and working principle.

The HMC290E is a high-precision GaAs MMIC attenuator which offers high dynamic range and wide bandwidth in a variety of applications, including fiber optic communication systems, satellite communication systems, and many more. It consists of two attenuator elements that facilitate variable attenuation with 0dB to 95dB of adjustment in 0.5dB increments, using a differential amplifier topology that ensures high linearity, high output power, and low noise figure.

The HMC290E has been designed to operate over the RF frequency range of 20 to 9000 MHz, or DC to 8GHz, with 3dB bandwidth extending up to 18GHz. This makes it ideal for use in many areas, including 5G communications, aerospace & defense, wireless infrastructure, automotive radar, CATV, and medical applications. It is manufactured with GaAs (gallium arsenide) technology, resulting in high performance, low losses, and high linearity.

In terms of performance, the HMC290E has excellent RF input/output return loss of ≤ 11dB over the entire frequency range, high attenuation accuracy of ± 0.2dB (max) from 0.01dB to 50dB, and ultra-low distortion levels of ≤ 0.1dB at level of 1dB. The device is also rated beyond the usual -40 to +85 °C temperature range – by an additional 65 °C when operating under shock/vibration conditions. It offers low power consumption of only 150mW, enabling it to be used in portable or handheld settings.

The HMC290E\'s working principle is based on the use of differential amplifier attenuator technology. It works by splitting an input signal into two paths, and then passing each signal through a differential amplifier with adjustable attenuation. This differential amplifier then creates an output signal which is the sum of these two signals, minus the desired amount of attenuation. Thus, the amount of signal attenuation can be adjusted by changing the bias voltage that is applied to the two amplifiers. The high linearity of the HMC290E enables very precise attenuation control over the entire range of adjustment.

Overall, the HMC290E provides high-precision RF attenuation over a wide frequency range. Its features and specifications make it suitable for a broad range of applications, from fiber optics and CATV systems to aerospace and medical applications. With its high linearity, wide bandwidth, high dynamic range, and low power consumption, the HMC290E is an ideal fit for many different types of projects.

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