AD8313
Overview
The AD8313 is a complete multistage logarithmic amplifier capable of accurately converting an RF signal into a corresponding decibel-scaled DC voltage. Operating from 100MHz to 2.5GHz with a dynamic range of 65dB, it functions as both a power measurement device and a controller in automated gain loops. The device maintains high temperature stability and provides a linear-in-dB output, making it ideal for signal strength indication and power leveling.
Why Choose This Part
The AD8313 offers an impressive 65dB dynamic range with +/-1dB accuracy across its frequency range, ensuring precise power detection even at low signal levels. It operates efficiently with a supply current of 13.7mA at 3V and includes a 20uA power-down mode for energy-sensitive applications. Its integrated design replaces complex discrete diode detection circuits while providing superior temperature stability and scaling.
Applications
Key Specifications
Getting Started
For evaluation, utilize the AD8313-EVALZ board which provides pre-configured SMA inputs and BNC outputs for rapid testing. Ensure the RF input is AC-coupled as the device has internal biasing, and follow the datasheet layout recommendations for high-frequency grounding and decoupling. The device can be configured in measurement mode or controller mode by adjusting the feedback path from the VOUT pin.
AD8313 Family
| Part Number | Difference | Stock |
|---|---|---|
| AD8313ACBZ-P7 | ACBZ-P7 | — |
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