AD8307ARZ

Overview

The AD8307ARZ is a monolithic logarithmic amplifier manufactured by Analog Devices Inc. It operates from DC to 500 MHz with a dynamic range of 92 dB and a typical supply current of 7.5 mA at 2.7 V to 5.5 V. The device features a slope of 25 mV/dB, an intercept of -84 dBm, and a cell bandwidth of 900 MHz. It utilizes six amplifier stages in an 8-lead SOIC package.

Feature Summary

• Provides a complete multistage logarithmic amplification function for signal level conversion.
• Features a fully differential dc-coupled signal path for high stability.
• Includes a CMOS-compatible enable interface for low-power standby operation.

Applications

• Receiver signal strength indication (RSSI)
• Transmitter antenna power measurement
• Conversion of signal level to decibel form

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and temperature rating. Confirm RoHS compliance status through manufacturer datasheets or component markings before integration into production designs.

Selection Notes

Select this component when a wide frequency range up to 500 MHz and a large dynamic range are required. Ensure the application supports single-supply operation within the specified voltage limits and accommodates the differential input configuration.

Part Context

This part belongs to the AD8307 series of logarithmic amplifiers. It represents a cost-effective solution for RF and IF signal processing applications requiring precise amplitude measurement over a broad frequency spectrum.

Replacement Considerations

AD8310 offers buffered output and faster response time. ADL5513 provides operation up to 4 GHz with lower input range. AD8309 supports higher input range with limiter output.