HMC659

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HMC659 is a monolithic microwave IC (MMIC) amplifier from Honeywell. It features a wide bandwidth of DC -10GHz and high gain up to 15.7dB. This makes the HMC659 an excellent choice for RF amplifiers, particularly those that require low noise. The HMC659 is designed for use in a wide variety of applications, including cellular and satellite communications systems, automotive radar, receivers, navigation systems, military radios, and medical imaging equipment.

The HMC659 employs a 5-stage amplifier architecture. The first stage is a low noise amplifier (LNA), featuring a noise figure of 1.5 dB and a gain of 15.7dB. The second stage is an automatic gain control (AGC) circuit, which performs closed-loop gain control and reduces system distortion. The third and fourth stages are low noise variable gain amplifiers (VGAs) with gains adjustable from 0 to 24 dB and are followed by a high power output stage. The output stage employs a dual transistor pair for high linearity and power output.

The HMC659 features a wide range of features and benefits to meet the varying needs of different applications. The HMC659 offers several advantages, including an independent AGC loop with excellent linearity, low spurious signals, high dynamic range, wide bandwidth and high power output. Additionally, the HMC659 operates over a wide temperature range and is available in a RoHS compliant package.

The principal application of the HMC659 are as follows:

• cellular and satellite communications systems
• automotive radar systems
• receivers
• navigation systems
• military radios
• medical imaging equipment

The HMC659 can be used in any application that requires a high gain, low noise, wide frequency range amplifiers such as RF amplifier for cellular handsets and satellite receivers. In these systems, the HMC659 can provide excellent gain accuracy even for very large signal dynamic ranges. Furthermore, the HMC659 is well-suited for applications such as multiband cellular and dental imaging systems.

The working principle of the HMC659 is based on a 5-stage amplifier architecture. The first stage is a low noise amplifier (LNA) with a gain of 15.7dB and a noise figure of 1.5dB. The second stage is an AGC loop, which provides closed-loop gain control and reduces system distortion. The third and fourth stages are low noise variable gain amplifiers (VGAs), with gains adjustable from 0 to 24dB, followed by a high power output stage. The output stage employs a dual transistor pair for high linearity and power output.

The HMC659 is a highly integrated MMIC amplifier designed for low noise, high gain applications including cellular and satellite communications, automotive radar receivers, navigation systems, military radios, and medical imaging. It offers a wide bandwidth and frequency range, excellent operation over extended temperature ranges, and superior performance. The HMC659 is an excellent choice for RF amplifiers and other applications that require low noise and high gain.

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