The LD8190 (analog CS8190) is specifically designed for use with air core meter movements. The IC provides all the functions necessary for an analog tachometer or speedometer. The LD8190 takes a speed sensor input and generates sine and cosine related output signals to differentially drive an air core meter.Many enhancements have been added over industry standard tachometer drivers such as the CS289 or LM1819. The output utilizes differential drivers which eliminates the need for a zener reference and offersmore torque. The device withstands 60V transients which decreases the protection circuitry required. The device is also more precise than existing devices allowing for fewer trims and for use in a speedometer.
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