The MAX2014 is a complete multistage logarithmic amplifier designed to accurately convert radio-frequency (RF) signal power in the 50MHz to 1000MHz frequency range to an equivalent DC voltage. The outstanding dynamic range and precision over temperature of this log amplifier make it particularly useful for a variety of base-station and other wireless applications, including automatic gain control (AGC), transmitter power measurements, and received-signal-strength indication (RSSI) for terminal devices. The MAX2014 can also be operated in a controller mode where it measures, compares, and controls the output power of a variable-gain amplifier as part of a fully integrated AGC loop. This logarithmic amplifier provides much wider measurement range and superior accuracy compared to controllers based on diode detectors, while achieving excellent temperature stability over the full -40°C to +85°C operating range.
The MAX2014 is a successive‑detection logarithmic amplifier designed for RF power measurement and automatic gain control (AGC) applications. It operates from 50 MHz to 1 GHz, provides a 75 dB dynamic range, and maintains high accuracy over a temperature range of –40 °C to +85 °C.
The device can function in detector (RSSI) mode or controller mode, offering a supply voltage range of 2.7 V to 5.25 V, an output voltage range of 0.5 V to 1.8 V, and a typical shutdown current of 1 pA. Pin‑compatible with other logarithmic amplifiers, it is supplied in an 8‑pin TDFN package.
| Frequency Range | 50 MHz to 1000 MHz |
|---|---|
| Dynamic Range | 75 dB |
| Supply Voltage | 2.7 V to 5.25 V |
| Output Voltage Range | 0.5 V to 1.8 V |
| Slope | ≈19 mV/dB |
The MAX2014 operates from 50 MHz up to 1000 MHz.
It can be powered from 2.7 V to 5.25 V.
The device provides a 75 dB dynamic range.