AD8310ARMZ-REEL7

Overview

The AD8310ARMZ-REEL7 is a demodulating logarithmic amplifier from Analog Devices Inc. It operates from DC to 440 MHz with a 95 dB dynamic range, defined from −91 dBV to +4 dBV. The device features a voltage output with a slope of +24 mV/dB and an intercept of −108 dBV. It utilizes a single supply voltage ranging from 2.7 V to 5.5 V, drawing a typical quiescent current of 8 mA. The component provides a fast rise time of less than 15 ns and can drive up to 25 mA into a grounded load. It is housed in an 8-lead MSOP package.

Feature Summary

• Multistage demodulating architecture using progressive compression for high-speed signal processing
• Fully differential DC-coupled signal path ensuring stability across wide frequency ranges
• High current capacity capable of driving loads up to 25 mA with rapid response times
• Integrated offset compensation loop maintaining accuracy without external components

Applications

• Conversion of signal levels to decibel form
• Transmitter antenna power measurement
• Receiver signal strength indication (RSSI)
• Low cost radar and sonar signal processing
• Network and spectrum analyzers

Procurement Notes

Verify the specific ordering suffix REEL7 confirms tape and reel packaging when sourcing. Confirm the manufacturer is Analog Devices Inc. and the part status is active. Ensure the operating temperature range meets industrial requirements of -40°C to +85°C. Cross-reference the datasheet revision F specifications against the received component lot.

Selection Notes

Select this component for applications requiring accurate logarithmic conversion from audio frequencies up to UHF ranges. The fully differential input simplifies matching to source impedances. Consider the 24 mV/dB slope for output scaling compatibility with downstream ADCs or controllers. Verify that the 95 dB dynamic range covers the expected signal amplitude variations in the target system.

Part Context

This component belongs to the AD8310 series of logarithmic amplifiers manufactured by Analog Devices Inc. It is designed as a complete solution for RF and baseband signal detection. The device integrates six amplifier stages and nine detector cells on a single die. It represents a specialized class of analog signal processing ICs used for precise envelope detection and level monitoring.

Replacement Considerations

Consult official documentation for direct pin-compatible substitutes within the same family. Verify functional equivalence regarding dynamic range and bandwidth if considering alternative manufacturers.

FAQ

How does the AD8310 handle low-frequency operation?

The device supports operation down to very low frequencies, including audio ranges, by utilizing an external capacitor at the OFLT pin to lower the high-pass corner frequency of the offset compensation loop.

What is the purpose of the ENBL pin?

The ENBL pin serves as a CMOS-compatible chip enable. Applying a high voltage activates the device, while a low voltage disables it, reducing the supply current to a sleep mode of approximately 1 mA.

Can the logarithmic slope be adjusted?

Yes, the standard slope of 24 mV/dB can be altered using external resistors connected to the BFIN pin, allowing customization of the transfer function for specific application needs.