Rainbow Electronics DS1669S User Manual
Electronic digital rheostat
E
Copyright 1995 by Dallas Semiconductor Corporation.
All Rights Reserved. For important information regarding
patents and other intellectual property rights, please refer to
Dallas Semiconductor data books.
DS1668, DS1669, DS1669S
Dallastat
TM
Electronic Digital Rheostat
DS1668, DS1669, DS1669S
081895 1/10
FEATURES
•
Replaces mechanical variable resistors
•
Available as the DS1668 with manual interface or the
DS1669 integrated circuit
•
Human engineered interface provides easy control
with DS1668
•
Electronic interface provided for digital as well as
manual control
•
Wide differential input voltage range between 4.5 and
8 volts
•
Wiper position is maintained in the absence of power
•
Low cost alternative to mechanical controls
•
Applications include volume, tone, contrast, bright-
ness, and dimmer control
•
8–pin SOIC and 8–pin DIP packages for DS1669
•
Standard resistance values for Dallastat
– DS1668/DS1669–10
~
10K
Ω
– DS1668/DS1669–50
~
50K
Ω
– DS1668/DS1669–100
~
100K
Ω
•
Operating Temperature Range
– Commercial: 0
°
C to 70
°
C; DS1668, DS1669
– Industrial: –40
°
C to +85
°
C; DS1669
PIN ASSIGNMENT DS1668
NC D
R
H
-V
R
W
+V
PIN 1
INDICATOR
TOP VIEW
1
2
3
6
5
4
INTEGRATED
PUSHBUTTON
PIN ASSIGNMENT DS1669
+V
DC
R
W
–V
(R
H
)
UC
D
(R
L
)
1
2
3
4
8
7
6
5
8-Pin DIP (300 Mil)
1
2
3
4
8
7
6
5
+V
DC
R
W
V-
(R
H
)
UC
D
(R
L
)
8-Pin SOIC (208 Mil)
PIN DESCRIPTION DS1669
R
H
-
Resistor High End
R
W
-
Resistor Wiper
R
L
-
Resistor Low End
-V, +V
-
Voltage Inputs
UC
-
Up Contact Input
D
-
Digital Input
DC
-
Down Contact Input
PIN DESCRIPTION DS1668
+V
-
Positive Voltage Input
-V
-
Negative Voltage
R
W
-
Resistor Wiper
D
-
Digital Input
R
H
-
Resistor High End
NC
-
No Connection - Pin Missing