NJM2673 JRC, NJM2673 Datasheet - Page 3

• Manufacturer Part Number: NJM2673
• Description: Stepper Motor / EMP24-E3
• Manufacturer: JRC

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PIN DESCRIPTION
EMP
V
T
V
Phase1
I
GND
I
M
C
E
V
M
M
E
C
M
I
I
Phase2
V
T
Symbol
11
01
02
12
1
2
CC
R1
1
MM
2
R2
1
2
B1
A1
A2
B2
Description
Logic voltage supply normally +5V.
Clock Oscillator, channel 1. Timing pin connect a 56k
parallel between T and ground.
Reference voltage, channel 1. Controls the threshold voltage for the comparator and
hence the output current.
Controls the direction of the motor current of M
from M
Logic input, channel 1. It controls, together with the I
output stage.
Ground and negative supply. These pins are used for heat sinking. Make sure that all
ground pins are soldered onto a suitable large copper ground plane for efficient heat
sinking.
Logic input, channel 1. It controls, together with the I
output stage.
Motor output B, channel 2. Motor current flows from M
Comparator input, channel 1. This input senses the instantaneous voltage across the
sensing resistor, filtered through a RC network.
Common emitter, channel 1. Connect the Sense resistor between this pin and
ground.
Motor supply voltage, 4 to 40V.
Motor output A, channel 1. Motor current flows from M
Motor output A, channel 2. Motor current flows from M
Common emitter, channel 2. Connect the Sense resistor between this pin and
ground.
Comparator input, channel 2. This input senses the instantaneous voltage across the
sensing resistor, filtered through a RC network.
Motor output B, channel 2. Motor current flows from M
Logic input, channel 2. It controls, together with the I
output stage.
Logic input, channel 2. It controls, together with the I
output stage.
Controls the direction of the motor current of M
from M
Reference voltage, channel 2. Controls the threshold voltage for the comparator and
Clock Oscillator, channel 2. Timing pin connect a 56k
parallel between T and ground.
hence the output current.
A1
A2
to M
to M
B1
B2
when Phase1 is HIGH.
when Phase2 is HIGH.
A1
A2
and M
and M
01
A1
A2
12
02
11
A1
A2
B1
B2
to M
to M
input, the current level in the
to M
to M
input, the current level in the
input, the current level in the
input, the current level in the
outputs. Motor current flows
outputs. Motor current flows
resistance and a 820pF in
resistance and a 820pF in
B1
B2
B1
B2
when Phase1 is high.
when Phase2 is high.
when Phase1 is high.
when Phase2 is high.
NJM2673
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