PC33991DH/R2

The PC33991DH/R2 is designed as one kind of single packaged, Serial Peripheral Interface (SPI). PC33991DH/R2 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 2-phase instrumentation stepper motor, similar to an MMT licensed AFIC 6405. PC33991DH/R2 also eases the transition to stepper motors from air core motors by emulating the air core pointer movement with little additional processor bandwidth utilization.

Features of the PC33991DH/R2 are:(1)MMT-licensed two-phase stepper motor compatible; (2)Minimal processor overhead required; (3)Fully integrated pointer movement and position state machine with air core movement emulation; (4)4096 possible steady state pointer positions; (5)Max pointer velocity of 400 Analog micro stepping (12 steps/degree of pointer movement); (6)Pointer calibration and return to zero; (7)SPI controlled 16-bit word; (8)Calibratable Internal Clock; (9)Low Sleep mode current.

The absolute maximum ratings of the PC33991DH/R2 can be summarized as:(1)Power Supply Voltage Steady State:-0.3 to 41 V;(2)Input Pin Voltage:-0.3 to 7.0 V;(3)SIN+/- COS +/- Continuous Per Output Current:40 mA;(4)Storage Temperature:-55 to 150 °C;(5)Operating Junction Temperature:-40 to 150 °C;(6)Thermal Resistance (C/W):60 °C/W;(7)Ambient Junction to Lead:20 °C/W;(8)ESD Voltage Human Body Model:2000 V;(9)ESD Voltage Machine Model: 200 V. If you want to know more information such as the electrical characteristics about the PC33991DH/R2, please download the datasheet in www.seekic.com or www.chinaicmart.com.