Abstract: An analog-to-digital converter has a self-test capability that provides not only an indication of failure or performance degradation but also identifies the failed or degraded component or components. The converter includes a first generator configured to generate a first analog value, a digital-to-analog converter configured to generate a second analog value, a second generator configured to generate a digital value from the comparison of the first analog value with respect to the second analog value, a controller configured to receive a signal indicating a test mode and to generate a configuration signal to the first generator, to receive the digital value and generate a control signal to control the generation of the second analog value, and to generate from the digital value an alarm signal indicating a failure within the analog-to-digital converter or indicating a degradation of the performance of the analog-to-digital converter.

Abstract: A circuit including an analog-to-digital converter having a self-test capability that provides not only an indication of failure or performance degradation but also identifies the failed or degraded component or components.