Gauge Driver Integrated Circuit

This 33991 is a single packaged, Serial Peripheral Interface (SPI) controlled, dual stepper motor gauge driver Integrated Circuit (IC). This monolithic IC consists of four dual output H-Bridge coil drivers and the associated control logic. Each pair of H-Bridge drivers is used to automatically control the speed, direction and magnitude of current through the two coils of a two-phase instrumentation stepper motor, similar to an MMT licensed AFIC 6405.

Features

• MMT-Licensed Two-Phase Stepper Motor Compatible

• Minimal Processor Overhead Required

• Fully Integrated Pointer Movement and Position State Machine with Air Core Movement Emulation

• 4096 Possible Steady State Pointer Positions

• 340° Maximum Pointer Sweep

• Linear 4500° 2

• Maximum Pointer Velocity of 400°

• Analog Microstepping (12 Steps/Degree of Pointer Movement)

• Pointer Calibration and Return to Zero

• SPI Controlled 16-Bit Word

• Calibratable Internal Clock

• Low Sleep Mode Current

• Pb-Free Packaging Designated by Suffix Code EG