LTC6409HUDB#TRMPBF

Overview

The LTC6409HUDB#TRMPBF is a high-speed, low distortion differential amplifier and ADC driver from Analog Devices Inc. It features a 10GHz gain-bandwidth product and 1.1nV/√Hz input noise density. The device operates on a 2.7V to 5.25V supply, drawing 52mA of current in active mode and 100µA in shutdown. It provides adjustable output common mode voltage and supports external resistor-set gains with a minimum of 1V/V. Packaged in a compact 3mm × 2mm 10-lead QFN, it functions over a –40°C to 125°C temperature range.

Feature Summary

• High linearity with 88dB SFDR at 100MHz for 2VP-P signals
• Input common mode range includes ground for DC-coupled single-ended to differential conversion
• Hardware shutdown feature reduces power consumption significantly
• External resistors allow precise tailoring of gain and frequency response

Applications

• Differential pipeline ADC driver
• High speed data-acquisition cards
• Automated test equipment
• Time domain reflectometry
• Communications receivers

Procurement Notes

Verify the HUDB suffix indicates the extended temperature grade (-40°C to 125°C) and TRMPBF denotes the tape and reel packaging configuration. Confirm the component matches the specific 10-lead QFN package dimensions and pinout requirements for your PCB layout. Ensure supply voltages remain within the 2.7V to 5.25V range during operation.

Selection Notes

Select this component when driving differential ADCs requires high bandwidth and low noise performance. The adjustable output common mode voltage simplifies interface design by eliminating the need for AC coupling capacitors or transformers in many applications. Consider the external gain setting capability if fixed internal gain solutions are insufficient for specific signal conditioning needs.

Part Context

This part belongs to the LTC6409 family of fully differential amplifiers designed for RF and IF applications. It serves as a bridge between single-ended sources and differential analog-to-digital converters. The device integrates high-speed signal processing capabilities into a small footprint, making it suitable for space-constrained high-performance data acquisition systems.

Replacement Considerations

LTC6409IUDB#TRMPBF offers identical electrical specifications but is rated for a commercial temperature range of –40°C to 85°C instead of the industrial range.