MICROSTEPPING MOTOR CONTROLLER WITH DUAL DAC
NJU39610
MICROSTEPPING MOTOR CONTROLLER WITH DUAL DAC
s GENERAL DESCRIPTION NJU39610 is a dual 7-bit+sign, Digital-to-A...
Description
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...
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