The CS8191 is specifically designed for use with 4 quadrant air–core meter movements. The IC includes an input comparator for sensing input frequency such as vehicle speed or engine RPM, a charge pump for frequency to voltage conversion, a bandgap reference for stable operation and a function generator with sine and cosine amplifiers that differentially drive the meter coils.

Features
• Direct Sensor Input
• High Output Torque
• Wide Output Voltage Range
• High Impedance Inputs
• Accurate Down to 10 V VCC
• Fault Protection
    – Overvoltage
    – Short Circuit
    – Low Voltage Operation
• Internally Fused Leads in DIP–16 and SO–20L Packages