The AD8315 is a complete RF detector/controller function for precise control of RF power amplifiers operating in the frequency range of 0.1 GHz to 2.5 GHz and over a typical dynamic range of 50 dB. It is intended for use in cellular handsets and other battery-operated wireless devices.
The AD8315 is a low‑cost RF detector/controller subsystem that provides a complete 50 dB dynamic range from 0.1 GHz to 2.5 GHz, suitable for cellular handsets and other battery‑operated wireless devices. It offers a voltage‑output control signal (VAPC) with low power consumption and temperature‑stable linear‑in‑dB response.
The document includes functional block diagrams, pin configuration, absolute maximum ratings, typical performance curves, and an ordering guide for the MSOP and LFCSP packages. Detailed electrical specifications such as supply voltage, logarithmic slope, and output drive capability are provided for designers.
| Frequency Range | 0.1 GHz to 2.5 GHz |
|---|---|
| Logarithmic Slope | 23 mV/dB (typical) |
| Supply Voltage (VPOS) | 2.7 V to 5.5 V |
| Quiescent Current (ENBL high) | 8.5 mA typical |
| Output Voltage Range (VAPC) | 0.25 V to 2.6 V |
| Output Current Drive | 5 mA to 200 mA |
| Operating Temperature Range | -40 °C to +85 °C |
The AD8315 operates from 0.1 GHz up to 2.5 GHz.
It requires a supply voltage between 2.7 V and 5.5 V.
The typical slope is about 23 mV per dB.
It can source or sink between 5 mA and 200 mA.