SGMCD1024xQ

The SGMCD1024xQ is an advanced multiple switch detection interface (MSDI) designed to detect external switch status for automotive applications. 

The SGMCD1024DQ integrates a 10-bit ADC for multi-position analog switch monitoring and a comparator for digital switch detection independent of the MCU. It features programmable thresholds to accommodate diverse switch types and system tolerances, ensuring precise operation in real-world conditions. 

The SGMCD1024AQ features a comparator with adjustable thresholds to monitor digital switches independently of the MCU. 

The SGMCD1024xQ device features 24 direct switch inputs, with 10 switch-to-power (SP) inputs, which are configurable to either switch-to-ground (SG) or switch-to-battery (SB), and 14 channels configurable to SG only. Each input supports multiple distinct programmable wetting current configurations, enabling optimized performance across diverse applications. To enhance energy efficiency, the system incorporates wake-up functionality for all switches, minimizing the need for sustained MCU activity. This solution integrates advanced protection features including fault detection, ESD protection, and diagnostic capabilities to ensure robust system operation. The device offers dual operational modes — continuous mode and polling mode. Continuous mode provides constant wetting current to detect the switch status. Polling mode employs periodic wetting current activation through a programmable timing interval, drastically reducing power consumption by sampling input statuses at scheduled intervals. 

The device is AEC-Q100 qualified (Automotive Electronics Council (AEC) standard Q100 Grade 1) and it is suitable for automotive applications. 

The SGMCD1024xQ is available in a Green TSSOP-38 (Exposed Pad) package.