AD8306AR

Overview

The AD8306AR is a complete IF limiting amplifier providing a logarithmic (RSSI) measure over a 100 dB dynamic range and a programmable limiter output from 5 MHz to 400 MHz. It operates on a single supply of +2.7 V to +6.5 V at 16 mA typical current. The device features fully differential inputs with 1 kΩ resistance and 2.5 pF capacitance, delivering a stable RSSI scaling slope of 20 mV/dB. The limiter section offers an overall gain of 90 dB with a 400 MHz bandwidth.

Feature Summary

• Provides accurate logarithmic signal measurement across a wide dynamic range
• Features a fully differential input interface for balanced or single-ended drive
• Includes a programmable limiter output stage with adjustable gain and current
• Utilizes CMOS-compatible control interface for rapid power-up and low standby current

Applications

• Receivers for frequency and phase modulation
• Very wide range IF and RF power measurement
• Receiver signal strength indication (RSSI)
• Low cost radar and sonar signal processing
• Instrumentation including network and spectrum analyzers

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and reel specifications. Confirm that the component meets all required environmental temperature ranges and electrical tolerances for the intended application before finalizing procurement decisions.

Selection Notes

Select this component when a high-precision logarithmic response combined with a hard-limited output is required within the 5 MHz to 400 MHz frequency band. Ensure the design accommodates the fully differential input requirements and provides adequate shielding to prevent instability from limiter output feedback.

Part Context

This part belongs to the AD8306 series of log-limiting amplifiers manufactured by Analog Devices Inc. It is designed for applications requiring both precise signal level monitoring and clean limiting outputs in a compact SOIC-16 package suitable for industrial temperature operations.

Replacement Considerations

Consult the manufacturer's official cross-reference data for verified substitute part numbers. Do not assume functional equivalence with other models without verifying pin compatibility and electrical specifications.