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.

特性 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