AD8310ARM

Overview

The AD8310ARM is a demodulating logarithmic amplifier from Analog Devices Inc. It operates from DC to 440 MHz with a 95 dB dynamic range and ±0.4 dB linearity up to 100 MHz. The device features a voltage output with a rise time under 15 ns and a slope of +24 mV/dB. It requires a single supply voltage between 2.7 V and 5.5 V, drawing a typical quiescent current of 8 mA. The component is housed in an 8-lead MSOP package.

Feature Summary

• Multistage progressive compression architecture for high-speed signal detection
• Fully differential DC-coupled signal path supporting low-frequency operation
• High current drive capability into grounded loads
• CMOS-compatible enable interface for power management

Applications

• Receiver signal strength indication (RSSI)
• Transmitter antenna power measurement
• Low cost radar and sonar signal processing
• Network and spectrum analyzers

Procurement Notes

Verify the specific suffix 'ARM' against the manufacturer's ordering guide to confirm the exact tape-and-reel or tube packaging configuration. Confirm that the industrial temperature grade (-40°C to +85°C) aligns with your system requirements. Ensure input matching networks are designed for the specified 1 kΩ input impedance to achieve optimal sensitivity.

Selection Notes

Select this component when a wide bandwidth extending to UHF frequencies is required alongside a large dynamic range. The internal offset compensation loop allows for operation down to low audio frequencies without external coupling capacitors. Consider the 24 mV/dB slope for direct interfacing with ADCs or microcontrollers requiring decibel-scale inputs.

Part Context

This part belongs to the AD8310 family of fast, voltage-output logarithmic amplifiers. It utilizes a successive detection technique to compress signals across its dynamic range. The device integrates six amplifier stages and nine detector cells on a single die, providing a complete solution for RF envelope detection and level monitoring applications.

Replacement Considerations

Check the official Analog Devices ordering guide for alternative packages such as AD8310ACPZ or AD8310ARMZ. Verify pin compatibility and thermal characteristics before substituting.