NJU39612

Figure 1. Block Diagram

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

s FEATURES

• Analog control voltages from 3V down to 0.0V

• High-speed microprocessor interface

• Full -scale error

±1 LSB

• Fast conversion speed

3

µs

• Matches the dual stepper motor drivers

• Package

EMP20

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

s GENERAL DESCRIPTION

s PACKAGE OUTLINE