NJU39612
MICROSTEPPING MOTOR CONTROLLER WITH DUAL DAC
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GENERAL DESCRIPTION
NJU39612 is a dual 7-bit+sign; Digital-to-Analog Converter
(DAC) developed to be used in micro stepping applications
together with the dual stepper motor driver. The NJU39612
has a set of input registers connected to an 8-bit data port for
easy interfacing directly to a microprocessor. Two registers
are used to store the data for each seven-bit DAC, the eighth
bit being a sign bit (sign/magnitude coding).
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PACKAGE OUTLINE
NJU39612E2
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FEATURES
鈥?Analog control voltages from 3V down to 0.0V
鈥?High-speed microprocessor interface
鈥?Full -scale error
鈥?Fast conversion speed
鈥?Package
EMP20
鹵1
LSB
3
碌s
鈥?Matches the dual stepper motor drivers
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BLOCK DIAGRAM
V
DD
V
Ref
NJU39612
WR
Sign 1
E1
CS
C
DA- Data 1
E
D
D/A
R
DA 1
A0
E2
DA
D/A
DA- Data 2
2
E
D7 - D0
C
D
R
POR
RESET
R
Sign 2
V
ss
Figure 1. Block Diagram