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On-Demand Webinar:

Efficiently Generating a Negative Output Voltage with Low Noise

This technical webinar explains low-noise circuits and demonstrates their usefulness in sensitive analog signal chain applications.

Date: December 6, 2017
Time: 10 AM EST (7 AM PST)
Duration: 1 hour
Presented by:


This webinar will be broadcast at 10 am EST, 7 am PST, 4 pm CET.

The inverting buck topology is a low noise method to achieve a negative output voltage. Through its buck output stage, a continuous output current is realized which results in a lower output voltage ripple. Additionally, a low-pass filter on the internal reference voltage attenuates 1/f noise. Combined together, these low-noise features eliminate the need for a post-DC/DC linear regulator (LDO) and cleanly power sensitive analog circuitry, such as data converters. This technical webinar explains both low-noise circuits and demonstrates their usefulness in sensitive analog signal chain applications.

Key Take-Aways

  • Learn about low-noise circuits
  • Discover their usefulness in sensitive analog signal chain applications

What you will learn in this webinar:

  • How to achieve a low noise at a negative output voltage with the inverting buck topology
  • Understanding how the buck output stage and filtered reference voltage attenuate noise
  • The elimination of LDOs when powering data converters by utilizing these low-noise features
  • Explanation of both low-noise circuits which achieve low output voltage ripple and low 1/f noise

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Chris Glaser, Applications Engineer, Texas Instruments

Chris Glaser is an applications engineer and Member of the Group Technical Staff for TI's Low Power DC/DC group. In this role, he supports customers, designs evaluation modules (EVMs), writes application notes, trains field engineers and customers, and generates technical collateral to make TI parts easier to use. He received his BSEE from Texas A&M, College Station, Texas.