The ADL5519 is a dual-channel log detector/controller with a frequency range of 1 MHz to 10 GHz. It features wide bandwidth, high accuracy, and low noise. It is suitable for applications such as linearization and gain/power control of RF transmitter power amplifiers, power monitoring in radio link transmitters, and dual-channel monitoring in wireless infrastructure radios.
The ADL5519 from Analog Devices is a dual‑channel logarithmic detector and controller designed for RF power measurement and control applications. It integrates two AD8317 log amplifiers and provides independent log‑scaled outputs, difference outputs, and a temperature‑compensated sensor.
The device operates from 3.3 V to 5.5 V, consumes about 60 mA, and is packaged in a 5 mm × 5 mm, 32‑lead LFCSP. It supports a wide frequency range (1 MHz‑10 GHz), offers a 62 dB dynamic range, and includes interfaces for set‑point, voltage reference, power‑down, and temperature compensation.
| Supply voltage range | 3.3 V to 5.5 V @ 60 mA |
|---|---|
| Dynamic range | 62 dB (±3 dB) |
| Frequency bandwidth | 1 MHz to 10 GHz |
| Operating temperature range | −40 °C to +125 °C |
| Input impedance (typical) | 1670 Ω || 0.47 pF |
| Output slope | −22 mV/dB |
| Package | 5 mm × 5 mm, 32‑lead LFCSP |
| Typical response time | 6 ns fall, 8 ns rise |
The ADL5519 operates from 3.3 V to 5.5 V and draws about 60 mA.
It is a dual‑channel device, offering two independent log‑detector channels.
The device provides a typical dynamic range of 62 dB (±3 dB).
The detector has a fall time of 6 ns and a rise time of 8 ns.