LT1993IUD-10#TRPBF

Overview

The LT1993IUD-10#TRPBF is a low distortion, low noise differential amplifier and ADC driver designed for applications from DC to 700MHz. It features a fixed gain of 20dB (10V/V) and operates on a single 5V supply consuming 100mA. The device includes built-in 175MHz differential lowpass filtering with additional filtered outputs to reduce external components. It provides adjustable output common mode voltage via the VOCM pin, eliminating the need for output transformers or AC-coupling capacitors in many designs.

Feature Summary

• Provides differential drive capability with both unfiltered and internally filtered output pairs
• Features an adjustable output common mode voltage control pin for direct ADC interfacing
• Supports single-ended to differential conversion with minimal support circuitry requirements
• Operates over an extended industrial temperature range of -40°C to 85°C

Applications

• Differential ADC driver for imaging and communications systems
• IF sampling receivers and SAW filter interfacing/buffering
• Single-ended to differential conversion circuits
• Level shifting applications requiring high-speed signal processing

Procurement Notes

Verify that the ordering suffix #TRPBF corresponds to the tape and reel packaging format and lead-free status as specified by Analog Devices. Confirm the 'I' grade designation ensures guaranteed performance across the full -40°C to 85°C operating temperature range. Ensure compatibility with the 16-lead 3mm x 3mm QFN package dimensions during PCB layout.

Selection Notes

Select this component when driving high-speed 12-bit or 14-bit ADCs requires low input-referred noise and high linearity. The integrated 175MHz lowpass filter simplifies design by reducing the need for external anti-aliasing components. Choose this part for applications needing a fixed 20dB gain and adjustable output common mode voltage without using output transformers.

Part Context

This part belongs to the LT1993 family of differential amplifiers. The LT1993 series offers various gain options and bandwidth characteristics tailored for driving analog-to-digital converters. The specific model provides a 700MHz bandwidth and is housed in a compact plastic QFN package suitable for space-constrained high-frequency designs.

Replacement Considerations

LT1993CUD-10#TRPBF

FAQ

What is the purpose of the +OUTFILTERED and –OUTFILTERED pins?

These pins provide differential outputs with an integrated 175MHz lowpass filter, reducing the need for external filtering components when driving high-speed ADCs.

How is the output common mode voltage controlled?

The output common mode voltage is set directly by applying a voltage to the VOCM pin, allowing flexible interfacing with ADCs without external biasing networks.