LT1993CUD-2#PBF

Overview

The LT1993CUD-2#PBF is a low distortion, low noise differential amplifier and ADC driver from Analog Devices. It operates on a single 5V supply with a typical current consumption of 100mA. The device features a fixed gain of 6dB (2V/V) and an 800MHz -3dB bandwidth. It includes built-in 175MHz differential low-pass filtering with dedicated filtered outputs to reduce external component count. The unit is housed in a compact 16-lead 3mm x 3mm QFN package.

Feature Summary

• Provides differential amplification with integrated low-pass filtering for high-speed ADC driving
• Features adjustable output common mode voltage via the VOCM pin
• Supports both DC-coupled and AC-coupled operation with minimal support circuitry
• Includes TTL-compatible ENABLE pin for power management

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 differential drive

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance when sourcing this component. Confirm the temperature grade 'C' corresponds to the commercial operating range of 0°C to 70°C as specified in the datasheet. Ensure the ordering code matches the 16-lead QFN package configuration required for your PCB layout.

Selection Notes

Select this part for applications requiring high linearity and low noise at frequencies up to 800MHz. The fixed 6dB gain simplifies design compared to programmable gain amplifiers. Consider the internal 175MHz filter if reducing external components is a priority. Verify that the 5V single-supply requirement aligns with your system power architecture.

Part Context

This component belongs to the LT1993 family of differential amplifiers designed specifically for driving high-resolution analog-to-digital converters. It serves as a bridge between signal processing stages and digitization, offering performance suitable for 12-bit and 14-bit ADCs. The series emphasizes ease of use by minimizing the need for external transformers or coupling capacitors.

Replacement Considerations

Public confirmed substitute part numbers: None.