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