CS8190EDWFR20G

Specialized ICS Overview

The CS8190EDWFR20G is a precision air-core tachometer and speedometer driver manufactured by onsemi. Designed for automotive applications, it accepts a speed sensor input and generates differential sine and cosine signals to drive air-core meter movements. The device integrates an input comparator, charge pump, voltage regulator, and function generator. It operates within a supply voltage range of 8.5 V to 16 V and withstands 60 V transients. Key electrical parameters include a typical supply current of 50 mA at 16 V, an output drive current of approximately 33 mA, and a maximum operating frequency of 20 kHz.

Specialized ICS Feature Summary

• Differential Sine/Cosine Output: Generates high-torque differential drive signals for precise air-core meter control without requiring external zener references.
• Integrated Charge Pump & F/V Converter: Converts input frequency to voltage with adjustable gain via external components (CCP, RT) for accurate speed indication.
• Return to Zero Function: Includes undervoltage detection circuits that ensure the pointer returns to the zero position upon power loss or low voltage conditions.
• High Transient Immunity: Withstands 60 V transient pulses, reducing the need for extensive external protection circuitry.

Specialized ICS Applications

• Automotive Speedometers
• Automotive Tachometers
• Air-Core Meter Driver Circuits

Specialized ICS Procurement Notes

Verify component status as the CS8190EDWFR20G may be discontinued or subject to product change notices. Confirm availability through authorized distributors and check for valid replacement part numbers such as the CS8190EDWFR20G if sourcing from secondary markets. Ensure compliance with RoHS and Pb-Free requirements specified in the datasheet.

Specialized ICS Selection Notes

Select this component for designs requiring direct driving of air-core meters with high torque and low flutter. Ensure the application supports the 8.5 V to 16 V operating voltage range. External components CCP and RT must be selected to set the desired frequency-to-voltage gain and temperature compensation characteristics according to the design example calculations.

Specialized ICS Part Context

The CS8190EDWFR20G belongs to the CS8190 series of precision tach/speedo drivers. It is the tape-and-reel version of the SO-20W package variant, distinguished by the 'R' suffix indicating reel packaging compared to the rail-packaged 'F' suffix versions. It serves as a modern replacement for older industry-standard drivers like the CS289 or LM1819, offering enhanced precision and integrated features.

Specialized ICS Replacement Considerations

The CS8190EDWFR20G is listed as discontinued. The CS8190EDWFR20G is cited as a similar available alternative in some contexts, but verification of current manufacturing status is required. No other direct pin-compatible replacements are explicitly confirmed in the provided documentation.