Linear Technology LTC1992 Differential Amplifier Application Note 333

About this manual

This document introduces the LTC1992 product family, which provides simple amplification or level translation solutions for signals that are intrinsically differential or need to be made differential. The family includes uncommitted configurations as well as fixed gain versions (LTC1992-1, -2, -5, and -10) with on-chip resistors.

The note details the circuit topology, including the output common mode servo and voltage-divider network. It explains how to configure the amplifier for various gains and input types, such as converting single-ended signals to differential or performing analog addition/subtraction functions.

What's inside

• Introduction
• Easy-to-Use Circuit Topology
• Common Mode Range Considerations
• Common Mode Input Range Extension
• Versatile Functional Block

Frequently asked questions

What is the gain bandwidth product of the LTC1992?

The device has a gain bandwidth product of about 4MHz.

How much can differential inputs swing below ground without clipping in a standard configuration?

Differential inputs can swing 1V below ground without clipping effects or the need for a minus rail.