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DS1669 Datasheet

  • DS1669

  • DallastatTm Electronic Digital Rheostat

  • 151.59KB

  • Dallas   Dallas

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DS1669
Dallastat
TM
Electronic Digital Rheostat
www.dalsemi.com
FEATURES
Replaces mechanical variable resistors
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,
brightness, and dimmer control
Available in 8-pin SOIC and 8-pin DIP
packages
Standard resistance values for Dallastat:
鈭?/div>
DS1669-10 ~ 10 k鈩?/div>
鈭?/div>
DS1669-50 ~ 50 k鈩?/div>
鈭?/div>
DS1669-100 ~ 100 k鈩?/div>
Operating Temperature Range
鈭?/div>
Industrial: -40擄C to +85擄C
PIN ASSIGNMENT DS1669
(R
H
)
UC
D
(R
L
)
1
2
3
4
8
7
6
5
+V
DC
R
W
V-
8-Pin SOIC (208-mil)
See Mech. Drawings Section
(R
H
)
UC
D
(R
L
)
1
2
3
4
8
7
6
5
+V
DC
R
W
-V
8-Pin DIP (300-mil)
See Mech. Drawings Section
PIN DESCRIPTION DS1669
R
H
R
W
R
L
-V, +V
UC
D
DC
- High Terminal of Potentiometer
- Wiper Terminal of Potentiometer
- Low Terminal of Potentiometer
- Voltage Inputs
- Up Contact Input
- Digital Input
- Down Contact Input
The DS1669 Dallastat
TM
is a digital rheostat or potentiometer. This device provides 64 possible uniform
tap points over the entire resistive range. The standard resistive ranges are 10 k鈩? 50 k鈩? and 100 k鈩?
The Dallastat can be controlled by either a switch contact closure input or a digital source input such as a
CPU. Wiper position is maintained in the absence of power through the use of a EEPROM memory cell
array. The EEPROM cell array will withstand more than 50,000 writes.
The DS1669 is offered in two standard IC packages which include an 8-pin 300-mil DIP and an 8-pin
208-mil SOIC. The DS1669 can be configured to operate using a single pushbutton, dual pushbutton or
digital source input by varying power-on conditions. This is illustrated in Figures 1 and 2. The DS1669
pinouts allow access to both ends of the potentiometer R
L
, R
H
, and the wiper, R
W
. Control inputs include
1 of 10
120299
DESCRIPTION

DS1669 PDF文件相關(guān)型號(hào)

DS1669-010,DS1669-050,DS1669-10,DS1669-100,DS1669-50

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