HMC189AMS8

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The HMC189AMS8 is a RF miscellaneous ICs and modules that enable optimized performance for common applications. This article will explore the capabilities of the HMC189AMS8, analyze its applications and give a description of its working principle.

Overview

The HMC189AMS8 from Analog Devices is a low-noise amplifier module, combining low noise and high gain performance in a small foot print. It offers flat gain bandwidths from DC to 7.5 GHz in a 2x2x.75mm surface-mount package (QFN) with integrated 7-bit resistive gain control. It is optimized for both high gain and low noise and features a low noise figure of 0.7 dB and an LNA noise figure of 1.4dB. The HMC189AMS8 requires single supply operation of 5.0 V supply voltage and 15 mA (typ.) and 55 mA (max.) supply current to operate.

Applications

The HMC189AMS8 amplifier module is an ideal choice for a range of applications, such as:

• Wireless Infrastructure: VSAT, WLL, Reconfigurable Twist Modem
• RF & Broadband Communications: Repeater, PA/LNA sub-systems
• Navigation & Avionic Systems: UAV, IFF (Identification Friends or Foes)
• Test & Measurement: Power level measurement

Operating Principle

The HMC189AMS8 is a fully integrated dual stage transistor amplifier for operation in the frequency range of DC to 7.5 GHz. It requires a single 5.0 V supply for operation and features excellent gain and noise figure performance. The amplifier contains two high-gain transistors in a common source configuration with feedback loops controlling both gain and noise figure. The amplifier is well matched for 50 ohm RF and IF ports. A 7-bit resistor ladder provides gain control from -15 to +20 dB in 1.5dB steps. The bias current for each of the two amplifiers can be trimmed independently.

Conclusion

The HMC189AMS8 is an ideal choice for applications where low noise and high gain, with gain control are required. It is designed for portable, cost-sensitive products where the combination of performance, small size, and low cost offers high levels of user satisfaction. With the ability to provide gain control, this small module is capable of providing reliable performance for a variety of applications in the RF/IF & microwave markets.

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