How Analog ICs Support Seismic Signal Detection

November 19, 2019

Christine Young  By: Christine Young
 Blogger, Maxim Integrated 


Every micro-movement deep beneath the earth's surface is important to note for applications such as resource extraction and substance sequestration. High-quality seismic data acquisition calls for recording technology that is precise and efficient—two characteristics that mark the solutions developed by Geophysical Technology, Inc. (GTI).

Headquartered in Houston, Texas, GTI designs, manufactures, sells, and supports unique geophysical technology. Its solutions monitor the earth's subsurface for resource extraction, earthquake monitoring, construction, and hydrothermal projects. The company strives to enhance seismic data acquisition methodologies and efficiency.

GTI is behind the NuSeis NRU 1C autonomous, continuous, battery-powered recording seismic node. The solution is a self-contained nodal seismic recording unit with a single channel of 24-bit digitization, internal and/or external battery, internal or external geophone, integrated high-sensitivity GNSS/GPS, and high-speed USB data download.

The NuSeis NRU-1C is implanted firmly into the soil, recording seismic energy at a configurable rate up to 2,000 observations every second. To achieve high-quality transfer of small seismic-reflected signals from three to five miles down in the earth, GTI needed an analog-to-digital converter (ADC) with a low noise floor and instantaneous dynamic range. These characteristics would support the high fidelity that the seismic nodes require.

This is where analog ICs come in. GTI found that the MAX11216 low-power, low-noise ADC with integrated programmable gain amplifier met its power, performance, and fidelity requirements. Along with the MAX11216, the company selected several other analog ICs for its seismic nodes.

Read the GTI testimonial to learn more about how analog ICs are enabling precise, power-efficient seismic recording technology.

GTI NuSeis seismic recording technologyGTI uses Maxim analog ICs in its precise, power-efficient seismic recording technology.