NJM3771 New Japan Radio, NJM3771 Datasheet
NJM3771
Manufacturer Part Number
NJM3771
Description
Manufacturer
New Japan Radio
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especially developed for use in microstepping applications in
conjunction with the matching dual DAC (Digital-to-Analog
Converter) NJU39610.
for both driver channels; a set of comparators and flip-flops
imple menting the switching control; and two H-bridges with
internal recirculation diodes. Voltage supply requirements are
+5 V for logic and +10 to +45 V for the motor. Maximum
output current is 650 mA per channel.
• Dual chopper driver
• 650 mA output current per channel
• Selectable slow/fast current decay for improved high-
• Specially matched to Dual DAC NJU39610
• Packages DIP22 / EMP24(Batwing) / PLCC28
Figure 1. Block diagram
The NJM3771 is a stepper motor driver, which circuit is
The NJM3771 contains a clock oscillator, which is common
speed microstepping
GENERAL DESCRIPTION
FEATURES
BLOCK DIAGRAM
V
RC
CC
NJM 3771
DUAL STEPPER MOTOR DRIVER
+
–
V
CC
Phase
Phase
2
1
CD
CD
2
1
V
V
R1
R2
C
C
1
2
–
+
+
–
+
+
–
–
GND
S
R
R
S
Q
Q
PACKAGE OUTLINE
Logic
Logic
NJM3771D2
E
E
2
1
NJM3771FM2
NJM3771E3
V
M
M
V
M
M
MM1
MM2
A1
B1
B2
A2
NJM3771
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