DS1668 Datasheet, PDF (1/10 Pages) Dallas Semiconductor – ELECTRONIC DIGITAL RHEOSTAT

DS1668, DS1669, DS1669S
DS1668, DS1669, DS1669S
Dallastat^TM Electronic Digital Rheostat
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 _~ 10KΩ
– DS1668/DS1669–50 _~ 50KΩ
– DS1668/DS1669–100 _~ 100KΩ
• Operating Temperature Range
– Commercial: 0°C to 70°C; DS1668, DS1669
– Industrial: –40°C to +85°C; DS1669
PIN ASSIGNMENT DS1668
R_H NC D
PIN 1
INDICATOR
654
123
TOP VIEW
+V R_W -V
INTEGRATED
PUSHBUTTON
PIN ASSIGNMENT DS1669
(R_H)
1
UC 2
D3
(R_L) 4
8
+V
7
DC
6
R_W
5
–V
8-Pin DIP (300 Mil)
(R_H)
1
UC
2
D
3
(R_L)
4
8
+V
7
DC
6
R_W
5
V-
8-Pin SOIC (208 Mil)
PIN DESCRIPTION DS1669
R_H
R_W
R_L
-V, +V
- Resistor High End
- Resistor Wiper
- Resistor Low End
- 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
ECopyright 1995 by Dallas Semiconductor Corporation.
All Rights Reserved. For important information regarding
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