The AD8302 is a fully integrated system for measuring gain/loss and phase up to 2.7 GHz. It includes dual demodulating log amps and a phase detector, with an input range of -60 dBm to 0 dBm in a 50 ohm system. It provides accurate gain measurement scaling (30 mV/dB) and phase measurement scaling (10 mV/degree), with typical nonlinearities of less than 0.5 dB and 1 degree, respectively. It is suitable for RF/IF power amplifier linearization, precise RF power control, remote system monitoring and diagnostics, return loss/VSWR measurements, and log ratio function for AC signals.
The AD8302 is a low‑frequency (LF) to 2.7 GHz RF/IF gain and phase detector that provides dual demodulating logarithmic amplifiers and a phase detector. It accepts AC‑coupled inputs from –60 dBm to 0 dBm in a 50 Ω system and delivers separate magnitude (VMAG) and phase (VPHS) outputs.
The device operates from a 2.7 V‑5.5 V supply, provides a stable 1.8 V reference, and its outputs can source or sink up to 8 mA. It is supplied in a 14‑lead TSSOP package and is rated for –40 °C to +85 °C operation. An evaluation board is also available.
| Input Frequency Range | 0 Hz – 2.7 GHz |
|---|---|
| Supply Voltage | 2.7 V – 5.5 V |
| Reference Voltage Output | 1.8 V |
| Output Voltage Range (VMAG/VPHS) | 0 V – 1.8 V |
| Small‑Signal Bandwidth | DC – 30 MHz |
| Operating Temperature Range | -40 °C to +85 °C |
| Package | 14‑lead TSSOP (RU‑14) |
It can measure signals from DC up to 2.7 GHz.
The device operates from 2.7 V to 5.5 V.
The magnitude output swings from 0 V to 1.8 V.
The small‑signal envelope bandwidth extends from DC to 30 MHz.