Technologies Available for License

2019-001: High-Performance Fully Differential Rail-to-Rail Output Amplifier

Invention: 2019-001

Patent Status: U.S. Patent Number 11,336,244 was issued on May 17, 2022

For technical and licensing related questions, email tcp@bnl.gov.

Summary

Electronic noise is a key limiting factor in the performance of many electronic systems, particularly those that rely on fully differential amplifiers. These amplifiers are widely used in sensitive applications such as medical imaging, particle detection, and biomedical circuits. Traditionally, reducing noise involves increasing power consumption, but most applications have strict power limits. As a result, system resolution is often compromised. This innovative circuit technique addresses the noise issue by reducing electronic noise by a factor of four without increasing power consumption. Unlike traditional methods that require higher power to reduce noise, this technique maintains the same power levels while enhancing the system's performance. By cutting noise, it effectively doubles the resolution, allowing for more precise signal detection and measurement in critical applications.

Description

The innovative amplifier design replaces the standard two-transistor input pair with a combination of four transistors- a series of n-channel metal-oxide (NMOS) and p-channel metal-oxide (PMOS) transistors arranged as an inverter. This new configuration result in at least a fourfold reduction in noise and double the bandwidth of the amplifier.

Journal Publication & Intellectual Property

• US 11,336,244 B2 (.pdf)