Octal Supply Supervisor Monitors Positive and Negative Voltages

Linear Technology has introduced the LTC2910, a low power voltage monitoring circuit with eight individual undervoltage monitoring inputs. Featuring adjustable inputs with a 0.5V threshold and a tight 1.5% threshold accuracy over the entire temperature range, the LTC2910 greatly simplifies voltage monitoring in the latest generation of multisupply systems. Two external resistors per input determine the desired trip point for the undervoltage monitor, while a three-state select pin programs the polarity combinations for the input thresholds, allowing negative supplies to be monitored. Two complimentary reset outputs signal when any of the supplies are below operating range, while the input glitch filter ensures that there will not be false or noisy triggering.