NJU39610

NJU39610 MICROSTEPPING MOTOR CONTROLLER WITH DUAL DAC s GENERAL DESCRIPTION NJU39610 is a dual 7-bit+sign, Digital-to-Analog Converter (DAC) especially developed to be used together with the NJM3771, Precision Stepper Motor driver in micro-stepping applications. The NJU39610 has a set of input registers connected to an 8-bit data port for easy interfacing directly to a microprocessor. The NJU39610 is well suited for highspeed micro-stepping application. s PACKAGE OUTLINE NJU39610D2 NJU39610FM2 s FEATURES Analog control voltages from 3 V down to 0.0 V High-speed microprocessor interface Automatic fast/slow current decay control Full-scale error Fast conversion speed Matches NJM3771 Packages DIP22/PLCC28 ± 1 LSB 3 µs s BLOCK DIAGRAM V DD V Ref NJU39610 WR C D E1 CS C D R Level 2 DA- Data 1 E E1 C D R Sign 1 R Level 1 Digit Comp E CD 1 DA 1 E E2 A0 E3 C D A1 E4 D7 - D0 C D R R DA- Data 2 D/A E D/A Digit Comp E4 C D R DA E 2 CD 2 E Sign 2 POR RESET R V ss Figure 1. Block Diagram NJU39610 s PIN CONFIGURATIONS Sign 2 CD 2 VSS N/C 26 CS V ref DA 1 Sign 1 CD 1 VDD WR D7 D6 D5 D4 D3 1 2 3 4 5 6 7 8 9 10 11 22 21 20 19 Reset DA 2 Sign 2 CD 2 VSS CS A1 A0 D0 N/C DA 2 Reset N/C V ref DA 1 5 6 7 8 9 10 11 28 A1 27 4 3 2 1 A0 25 24 D0 D1 D2 N/C D3 D4 D5 NJU 39610D2 18 17 16 15 14 13 12 NJU 39610FM2 23 22 21 20 19 N/C 12 13 14 15 16 17 Sign 1 CD 1 VDD D2 Figure 2. Pin configurations s PIN DESCRIPTION Refer to figure 2. DI...