The AD8314 is a complete RF detector/controller for the measurement and control of RF signals in the frequency range of 0.1 GHz to 2.5 GHz. It has a typical dynamic range of 45 dB, excellent temperature stability, and provides a wider dynamic range and better accuracy than using discrete diode detectors.
The AD8314 is a complete RF detector/controller subsystem designed for cellular handsets and other wireless devices. It measures and controls RF signals from 0.1 GHz to 2.5 GHz, offering a 45 dB dynamic range and temperature‑stable linear‑in‑dB response.
Key features include a low supply current (12 mW at 2.7 V), power‑down mode with 20 µA draw, two voltage outputs (V_UP for measurement and V_DN for control), and an 8‑lead micro‑SOIC package. The device is specified for operation from –30 °C to +85 °C.
| Frequency Range | 0.1 – 2.5 GHz |
|---|---|
| Input Voltage Range | 1.25 – 224 mV rms |
| V_UP Output Voltage Range | 0.01 – 1.2 V |
| Supply Voltage (VPOS) | 2.7 – 5.5 V |
| Quiescent Current | ≈3 mA (typical) |
The response time is about 70 ns for a 10 dB step.