The LT5537 is a wide dynamic range RF/IF log detector, operational from below 10MHz to 1000MHz.
This guide provides setup instructions for evaluating the LT5537 log-linear RF/IF detector in Demonstration Circuit 747. It details how to connect power, input signal, and measurement equipment. The detector operates from 10MHz to 1GHz with a typical output slope of 20mV/dB and temperature coefficient of 0.01dB/°C at 200MHz.
Performance specifications are listed for various frequencies, including dynamic range, slope, intercept, sensitivity, and temperature coefficient. Design files are available by contacting the LTC factory.
| Supply Voltage | 2.7V to 5.25V |
|---|---|
| Supply Current | 13.5mA |
| Shutdown Current | 500µA |
| Input Frequency Range | 10MHz to 1GHz |
| Output Slope at 200MHz | 20mV/dB |
| Temperature Coefficient at 200MHz | 0.01dB/°C |
| Maximum Input Power | 50W |
The operating frequency range is 10MHz to 1GHz, with the lower limit extendable to near DC using an external capacitor.
The output slope is normally 20mV/dB.
Connect the VCC test point to the ENBL test point using a jumper cable.
Do not exceed +22dBm, the absolute maximum RF input power.