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PDF NJU39612 Data sheet ( Hoja de datos )
| Número de pieza | NJU39612 | |
| Descripción | MICROSTEPPING MOTOR CONTROLLER WITH DUAL DAC | |
| Fabricantes | New Japan Radio | |
| Logotipo |  |
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NJU39612
MICROSTEPPING MOTOR CONTROLLER WITH DUAL DAC
s 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).
s PACKAGE OUTLINE
NJU39612E2
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
s BLOCK DIAGRAM
WR
CS
A0
D7 - D0
RESET
E1
E2
POR
VDD
VRef
NJU39612
Sign 1
DA- Data 1
E
C
D
R
D/A
DA 1
DA- Data 2
E
C
D
R
R
Vss
D/A
DA 2
Sign 2
Figure 1. Block Diagram
1 page  
s ABSOLUTE MAXIMUM RATINGS
Parameter
Voltage
Supply
Logic inputs
Reference input
Current
Logic inputs
Temperature
Storage temperature
Operating ambient temperature
s RECOMMENDED OPERATING CONDITIONS
Parameter
Supply voltage
Reference voltage
Rise and fall time of WR
NJU39612
Pin no.
Symbol
Min
4
5-14,16
1
VDD
VI
VRef
-
-0.3
-0.3
5-14,16 II
-0.4
Tstg -55
T -20
opr
Max
Unit
6
VDD+ 0.3
VDD+ 0.3
V
V
V
+0.4 mA
+150
+85
°C
°C
Symbol
VDD
VRef
tr, tf
Min
4.75
0
-
Typ
5.0
2.5
-
Max
5.25
3.8
1
Unit
V
V
µs
5 Page 
Counter
Clock Up/Dn
PROM
D0-D7
CE
NJU39612
A0
WR
CS
Vref
Step
Direction
Control Logic
Voltage
Reference
Figure 12. Typical blockdiagram of an application without a microprocessor.
NJU39612
NJM3777
VCC (+5 V)
To
P
+2.5V
13
D0
4
VDD
6 D7
NJU39612
14 A0
5
16
20
WR
CS
RESET
1
V Ref
VSS
17
GND
(VCC )
0.1 F
0.1 F
V MM
+
10 F
13 5
20
Sign1 3
V
10 Phase1 CC
V
MM1
V
MM2
MA1
4
DA1 2
Sign2 18
DA2 19
11 Dis1
8 VR1
NJM3777
15 Phase 2
14 Dis2
17 V R2
RC GND C1
E1
C2
MB1 2
21
MA2
MB2 23
E2
12 6, 7, 9
3 16
22
+5 V 12 k
18, 19
4700 pF
0.47 0R.4S7
RS
STEPPER
MOTOR
Pin numbers refer
to EMP package.
GND (VMM)
Figure 13. Typical application in a microprocessor based system.
The specifications on this databook are only
given for information , without any guarantee
as regards either mistakes or omissions.
The application circuits in this databook are
described only to show representative
usages of the product and not intended for
the guarantee or permission of any right
including the industrial rights.
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet NJU39612.PDF ] | |
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