The AD8314 is a low-cost subsystem for the measurement and control of RF signals in the frequency range of 100 MHz to 2.7 GHz, with a typical dynamic range of 45 dB, intended for use in a wide variety of cellular handsets and other wireless devices. It provides a wider dynamic range and better accuracy than traditional RF detectors and controllers.
The AD8314 is a complete RF detector/controller subsystem for measuring and controlling signals from 100 MHz to 2.7 GHz. It provides a 45 dB dynamic range, temperature‑stable linear‑in‑dB response, and low power operation (12 mW at 2.7 V).
Two voltage outputs are provided: V_UP for measurement mode (0.01 V‑1.2 V) and V_DN for control mode (≈2.25 V‑ground). The device is offered in 8‑lead MSOP and 8‑lead LFCSP packages and draws about 4.5 mA from a 2.7 V‑5.5 V supply.
| Frequency Range | 100 MHz – 2.7 GHz |
|---|---|
| Input Voltage Range | 1.25 mV – 224 mV rms |
| Logarithmic Intercept (V_UP) | -68 dBV at 100 MHz |
| Response Time (10 %‑90 % for 10 dB step) | 70 ns |
| Supply Voltage (V_POS) | 2.7 V – 5.5 V |
| Quiescent Current | 5.7 mA |
| Available Output Current (V_UP) | 1 mA source / 0.5 mA sink |
It operates from 100 MHz up to 2.7 GHz.
The typical response time is 70 ns for a 10 %‑90 % transition.
It accepts a supply voltage between 2.7 V and 5.5 V.