NJU39610 New Japan Radio, NJU39610 Datasheet - Page 5

• Manufacturer Part Number: NJU39610
• Description: MICROSTEPPING MOTOR CONTROLLER WITH DUAL DAC
• Manufacturer: New Japan Radio

DA
These are the two outputs of DAC1 and DAC2. Input to the DACs are internal data bus (Q
Q
Reference Voltage V
V
Any V
Power-on Reset
This function automatically resets all internal flip flops at power-on. This results in V
and all digital outputs.
Reset
If Reset is not used, leave it disconnected. Reset can be used to measure leakage currents from V
Ref
02
1
).
is the analog input for the two DACs. Special care in layout, gives a very low voltage drop from pin to resistor.
and DA
Ref
between 0.0 V and V
Figure 10. Single pulse programming, in- and output signals.
Figure 9. Double pulse programming, in- and output signals.
Time when motor is in
a compromise
position.
Time when micro
position is correct.
Write
signal.
Motor
position.
Writing to
channel 1.
Writing to
channel 2.
2
Time when motor is in
an intermediate
position.
Time when micro
position is almost
correct.
Write
signal.
Motor position. Note
that position is always
a compromise.
Writing to
channel 1.
Writing to
channel 2.
Useful time = compromise position
with equally spaced angles
Useful time = almost
correct position
Useful time = correct
position
Write time = incorrect position
Ref
DD
can be applied, but output might be non-linear above 3.0 V.
Double pulse write signal
Actual data = true position
Normal resolution
Single pulse write signal
"Ideal data" = desired
position
Ideal data = desired position
Actual data = true position
Note increased resolution
SS
voltage at both DAC outputs
61
… Q
NJU39610
01
) and (Q
Time
Time
DD
.
62
…