Description

The CS4172 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 ±1.0¡ 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 2MHz shift clock rate.

Features

■ Serial Input Bus

■ 2 MHz Operating Frequency

■ Tangential Drive Algorithm

■ 80mA Drive Circuits

■ 0.5° Accuracy (Typ.)

■ Power-On-Reset

■ Protection Features

Output Short Circuit

Overtemperature