Single Gauge Driver

The 33977 is a Serial Peripheral Interface (SPI) Controlled, stepper motor gauge driver Integrated Circuit (IC). This monolithic IC consists of a dual H-Bridge coil driver and its associated control logic. The H-Bridge drivers are used to automatically control the speed, direction, and magnitude of current through the coils of a two-phase instrumentation stepper motor, similar to an MMT-licensed AFIC 6405 of Switec MS-X156.xxx motor.

Features

• MMT-Licensed Two-Phase Stepper Motor Compatible

• Switec MS-X15.xxx 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

• Maximum Acceleration of 4500°/s2

• Maximum Pointer Velocity of 400°/s

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

• Pointer Calibration and Return to Zero (RTZ)

• Controlled via 16-Bit SPI Messages

• Internal Clock Capable of Calibration

• Low Sleep Mode Current

• Pb-Free Packaging Designated by suffix code EG