The 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 CS8190 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 offers more torque. The device withstands 60 V 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.
The CS8190 is an integrated circuit specifically designed for use with air-core meter movements to drive analog tachometers or speedometers. It integrates functions such as a high-impedance input comparator, a charge pump for frequency-to-voltage conversion, a bandgap voltage regulator, and a function generator with sine and cosine amplifiers.
| Supply Voltage Range | 8.5 V to 16 V |
|---|---|
| Operating Temperature | -40°C to +105°C |
| Input Frequency Range | 0 Hz to 20 kHz |
| Function Generator Error (Typical) | ±2.5 degrees at 13.1V to 16V supply |
The device withstands 60 V transients.
Yes, it includes a return to zero feature that moves the needle to the 0° position when power is low.
The device is available in DIP-16 and SO-20L packages.