NJU39612
Figure 1. Block Diagram
V
DD
V
Ref
CS
A0
WR
D7 - D0
RESET
V
ss
Sign 2
DA
2
Sign
1
DA
1
D / A
D / A
E1
E2
POR
NJU39612
E
C
D
R
DA- Data 1
E
C
D
R
DA- Data 2
R
■
FEATURES
• Analog control voltages from 3V down to 0.0V
• High-speed microprocessor interface
• Full -scale error
±
1 LSB
• Fast conversion speed 3
µ
s
• Matches the dual stepper motor drivers
• Package EMP20
■
BLOCK DIAGRAM
NJU39612E2
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).
MICROSTEPPING MOTOR CONTROLLER WITH DUAL DAC
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GENERAL DESCRIPTION
■
PACKAGE OUTLINE
