Best Logarithmic Amplifiers of 2025

The HiLetgo AD8310 RSSI Power Meter Board is a logarithmic amplifier designed for high frequency RF output. With an operating frequency range of 0.1-440 MHz and a dynamic range of -77dBm to +18 dBm, this board is perfect for detecting and measuring RF signals. The detection slope of +24 mV/dB and detection intercept of -108 dBV provide accurate readings. The board operates with an input voltage of 7-15V, and includes an LM78L05 regulator chip.

This logarithmic detector is designed to detect RF signal power using the ADI's AD8317 chip. It can detect RF signals with a power of -55dBm to -0dBm in the 1M-10GHz frequency range, and convert the RF signal into a DC voltage output. The output voltage is proportional to the logarithm of the input signal amplitude, which expands the dynamic range of the detected signal by 55dB. This detector can be used in radio frequency signal detection, signal power measurement, environmental field strength detection, and as a component of automatic gain control and automatic level control. Additionally, it is stable, durable and can withstand high and low temperatures.

This RF signal power meter detector is used for detecting RF signal power in the frequency range of 1MHz to 600MHz, with a power detection range from -74dBm to 18dBm. It converts the RF signal into a DC voltage output, with output voltage proportional to the logarithm of input signal range. The detector is useful for RF signal detection, power measurement, environment field strength detection, and can be used as a part of automatic gain control and automatic level control. It can also be transformed into a 1mw to 1kw RF power meter.

The RF Detector Module is a premium quality logarithmic detector used for detecting RF signal power ranging from -72dBm to -2dBm, with a detection slope of 18mV/dBm. It can be used in RF signal detection, signal power measurement, environmental field strength detection, and part of automatic gain control and automatic level control. Its output voltage is proportional to the logarithm of input signal amplitude, which enlarges the dynamic range of the detected signal up to 70dB.

This Keenso RF Power Meter, model AD8307, is a compact and high-quality device suitable for various applications. With a default input power range of -75 ~ +15 dBm, it features a wide dynamic range and a frequency range from IF to UHF audio. It has low power consumption, high precision, and high stability. The RF detector adopts the AD8307 chip, which offers excellent power non-sensitivity and temperature stability. This device is perfect for converting signal levels into dB form, measuring transmitter antenna power, determining received signal strength, and processing low-cost radar and sonar signals. Additionally, it can be used as a network and spectrum analyzer, reaching 120 dB and determining signal levels as low as 20 Hz.

This Logarithmic Amplifier Module is designed with isolating capacitance to prevent DC voltage from leaking into other circuits, as well as a high frequency inductance to isolate AC information and prevent high frequency signals from entering the power supply. Its ultra-broadband and near idealization structure ensures no resonant point, making it ideal for broadband amplifier, optical fiber communication, and other test and measurement applications. With a working frequency range of 10MHz to 6GHz, insertion loss of less than 1.2 dB, and a normal working current of less than 0.5A, this module is a reliable choice for various applications.

This Logarithmic Amplifier AD8302 RF/IF Phase Detector Module comes with multi-function features including remote system monitoring, diagnostics, return loss/VSWR measurements, and log ratio function for AC signals. It has dual demodulating log amps and phase detector, measures gain/loss and phase up to 2.7 GHz, and has high accuracy with precise RF power control. The input range is -60 dBm to 0 dBm in a 50 Ω system.

The AD8302 RF/IF Phase Detector Module is a versatile component that offers multi-modes of measurement, accurate gain and phase scaling, and can function within a wide range of input signals. It supports a stable voltage output, and can accurately measure gain/loss and phase up to 2.7 GHz, making it ideal for RF/IF PA Linearization, RF Power Control, System Monitoring and Diagnostics, and more.