Single Air-Core Gauge Driver

   The CS4192 is a monolithic BiCMOS integrated circuit used to translate a digital 10–bit word from a microprocessor/microcontroller to complementary DC outputs. The DC outputs drive an air–core meter commonly used in vehicle instrument panels. The 10 bits of data are used to linearly control the quadrature coils of the meter directly with a 0.35° resolution and ±1.2° accuracy over the full 360° range of the gauge. The interface from the microcontroller is by a Serial Peripheral Interface (SPI) compatible serial connection using up to a 2.0 MHz shift clock rate.

FEATUREs
• Serial Input Bus
• 2.0 MHz Operating Frequency
• Tangential Drive Algorithm
• 70 mA Drive Circuits
• 0.5° Accuracy (Typ.)
• Power–On–Reset
• Protection Features
   – Output Short Circuit
   – Overtemperature
• Internally Fused Leads in SO–16L Package