LT1993IUD-4#TRPBF

Overview

The LT1993IUD-4#TRPBF is a low distortion, low noise differential amplifier and ADC driver designed for applications from DC to 900MHz. It features a fixed gain of 4V/V (12dB) and operates on a single 5V supply with typical current consumption of 100mA. The device includes built-in 175MHz differential lowpass filtering and an adjustable output common mode voltage via the VOCM pin. It is housed in a compact 16-lead 3mm x 3mm QFN package and supports operation over a temperature range of –40°C to 85°C.

Feature Summary

• Provides differential drive capability with both unfiltered and internally filtered outputs to reduce external component count.
• Features adjustable output common mode voltage control to eliminate the need for output transformers or AC-coupling capacitors.
• Supports single-ended to differential conversion and differential to single-ended conversion with minimal support circuitry.
• Designed for high-speed analog-to-digital converter interfacing with low input-referred noise and high linearity.

Applications

• Differential ADC driver for imaging and communications systems
• IF sampling receivers and SAW filter interfacing/buffering
• General-purpose differential gain block requiring DC to 900MHz bandwidth

Procurement Notes

Verify that the specific suffix #TRPBF corresponds to the lead-free tape and reel packaging configuration required for your assembly process. Confirm that the I-grade designation meets the specified industrial operating temperature range of –40°C to 85°C for your application environment. Ensure compatibility with the 16-lead 3mm x 3mm QFN footprint during PCB layout.

Selection Notes

Select this component when driving high-speed 12-bit or 14-bit ADCs requiring low distortion and low noise performance up to 900MHz. Choose the I-grade version if the application demands guaranteed performance across the full industrial temperature range of –40°C to 85°C. Consider the integrated filtering options if reducing external passive components is a priority.

Part Context

This part belongs to the LT1993 family of low distortion, low noise differential amplifiers. The LT1993 series offers various gain options and package configurations to suit different system requirements. The LT1993-4 specifically provides a fixed gain of 4V/V, making it suitable for direct interfacing with specific ADC input ranges without additional gain stages.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.