NJU39610
MICROSTEPPING MOTOR CONTROLLER WITH DUAL DAC
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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 high-
speed micro-stepping application.
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PACKAGE OUTLINE
NJU39610D2
NJU39610FM2
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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
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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
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Figure 1. Block Diagram
NJRC [ NEW JAPAN RADIO ]
