Deep Space Design Considerations

The linchpin technology in a deep space telescope is the ability to efficiently convert analog image sensor data into digital data in order to beam home high-resolution images of astronomical objects. The analog-to-digital converters (ADC) must perform flawlessly once deployed, because it is not feasible to drive out 1 million miles into space to fix any problems. The next-generation success... » read more

Analog-To-Digital Conversion Is Key For Deep Space Exploration With The James Webb Space Telescope

Reflect back to your last design project. Did it have leading-edge requirements that seemed impossible at the time to fulfill? Now think about a design that needs to live in the harsh environment of space. A device that has to sip power and function flawlessly for over a decade because there is no opportunity to service it if anything goes wrong. That is the set of requirements that faced Dr. L... » read more

Full-Circuit ADC Verification With Analog FastSPICE

Analog to Digital Converters (ADCs) are critical components in high-speed, high-resolution applications where an analog or RF signal has to be processed, stored, or transported in digital form. ADC performance requirements vary by application and include resolution, dynamic range, linearity, power consumption, speed, bandwidth, SNDR (Signal-to-Noise and Distortion Ratio), and ENOB (Effective Nu... » read more

Analog FastSpice Platform Full-Spectrum Sampled Periodic Noise Analysis

Many high-performance analog/mixed-signal ICs include track-and-hold circuits to sample analog signals at one or more discrete timepoints per period. Although track-and-hold circuits are periodic, traditional periodic noise (pnoise) analysis does not apply because it measures the device noise impact integrated over an entire period rather than at instantaneous time points within the target peri... » read more

DSP-Based Testing

ADC and DAC are the most typical mixed signal devices. In mixed signal testing, analog stimulus signal for an ADC is generated by an arbitrary waveform generator (AWG) which employs a D/A converter inside, and an analog signal out of a DAC is measured by a digitizer or a sampler which employs an A/D converter inside. The stimulus signals for these devices are created using mathematical method, ... » read more

How To Reduce The Need For Guardbanding A Flash ADC Design

For sensitive mixed-signal designs at small process nodes, the influence of parasitic elements is growing with the increasing interactions among devices and interconnects that are in close proximity. Circuits are highly sensitive to these parasitic effects, and accurate parasitic extraction is critical for first silicon success. New 3D parasitic extraction technology applied to a flash ADC circ... » read more