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DS1809 Datasheet

  • DS1809

  • Dallastat

  • 87.71KB

  • Dallas   Dallas

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DS1809
Dallastat
www.dalsemi.com
FEATURES
摟
摟
摟
摟
64-position linear taper
Two nonvolatile wiper storage options
Operates from +2.7 to +5.5-volt supplies
Operating Temperature Range:
- Industrial: -40擄 to +85擄
C
C
摟
Electronic interface provides either digital or
pushbutton control
摟
Low-cost alternative to mechanical solutions
摟
Standard Resistance Values
- DS1809-010
10 k鈩?/div>
- DS1809-050
50 k鈩?/div>
- DS1809-100
100 k鈩?/div>
PIN ASSIGNMENT
R
H
UC
STR
R
L
1
2
3
4
8
7
6
5
V
CC
DC
R
W
GND
8-Pin DIP
8-Pin SOIC (150-mil)
8-Pin 碌SOP (118-mil)
PIN DESCIPTION
V
CC
R
H
R
L
R
W
UC
DC
STR
GND
-
-
-
-
-
-
-
-
Supply Voltage
High End of Resistor
Low End of Resistor
Wiper Terminal
Up Control Input
Down Control Input
Storage Enable Input
Ground
DESCRIPTION
The DS1809 Dallastat is a nonvolatile digitally controlled potentiometer that provides 64 uniform wiper
positions over the entire resistor range; including the high-end and low-end terminals of the device. The
DS1809 is a low power, low voltage device capable of operating from power supplies of +2.7V to +5.5V.
The device is ideal for low-power, portable, or battery powered applications.
Wiper position is maintained in the absence of power. This is accomplished via the use of an EEPROM
cell array. The device provides for two storage methods, which include an auto-store capability and a
command-initiated storage function. The EEPROM cell array is specified to accept greater than 50k
writes. Storage of the wiper position is discussed in the Wiper Storage section of this datasheet.
Wiper positioning is controlled via a patented dual pushbutton (or contact closure) interface. For simple
pushbutton-controlled applications or CPU-generated control signals, external debounce circuitry is not
needed. The control interface will support both repetitive pulse inputs and continuous pulse (鈥減ush-and-
hold鈥? inputs. Repetitive pulse and continuous pulse control as well as timing diagrams are discussed in
the section entitled 鈥淥PERATION.鈥?/div>
1 of 8
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DS1809 PDF文件相關(guān)型號

DS1809-010,DS1809-100,DS1809U-010,DS1809U-050,DS1809Z-010,DS1809Z-050,DS1809Z-100

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