XX-XXXX; Rev 0; 4/02
Addressable Digital Potentiometer
General Description
The DS1805 addressable digital potentiometer contains
a single 256-position digitally controlled potentiometer.
Device control is achieved through a 2-wire serial inter-
face. Device addressing is provided through three
address inputs that allow up to eight devices on a sin-
gle 2-wire bus. The exact wiper position of the poten-
tiometer can be written or read. The DS1805 is
available in 16-pin SO and 14-pin TSSOP packages.
The device is available in three standard resistance val-
ues: 10k鈩? 50k鈩? and 100k鈩? The DS1805 is specified
over the industrial temperature range. The DS1805
provides a low-cost alternative for designs based on
the DS1803, but require only a single potentiometer.
鈾?/div>
3V or 5V Operation
鈾?/div>
Low Power Consumption
鈾?/div>
One Digitally Controlled, 256-Position
Potentiometer
鈾?/div>
Compatible with DS1803-Based Designs
鈾?/div>
14-Pin TSSOP (173mil) and 16-Pin SO (150mil)
Available for Surface-Mount Applications
鈾?/div>
Three Address Inputs
鈾?/div>
Serial 2-Wire Bus
鈾?/div>
Operating Temperature Range
Industrial: -40擄C to +85擄C
鈾?/div>
Standard Resistance Values
DS1805-010: 10k鈩?/div>
DS1805-050*: 50k鈩?/div>
DS1805-100*: 100k鈩?/div>
Features
DS1805
Applications
CCFL Inverters
PDAs and Cell Phones
Portable Electronics
Multimedia Products
Instrumentation and Industrial Controls
Pin Configurations
TOP VIEW
Ordering Information
PART
DS1805E-010
TEMP RANGE
-40擄C to +85擄C
-40擄C to +85擄C
-40擄C to +85擄C
-40擄C to +85擄C
-40擄C to +85擄C
-40擄C to +85擄C
PIN-PACKAGE
14 TSSOP (173mil)
14 TSSOP (173mil)
14 TSSOP (173mil)
16 SO (150mil)
16 SO (150mil)
16 SO (150mil)
RESISTANCE
(K鈩?
10
50
100
10
50
100
H1 1
L1
W1
2
3
14 V
CC
13 N.C.
12 N.C.
H1 1
N.C. 2
L1 3
W1 4
A2 5
A1 6
A0 7
GND 8
16 V
CC
15 N.C.
14 N.C.
DS1805E-050*
DS1805E-100*
DS1805Z-010
DS1805Z-050*
DS1805Z-100*
A2 4
A1 5
A0 6
GND 7
DS1805E
11 N.C.
10 N.C.
9
8
SDA
SCL
DS1805Z
13 N.C.
12 N.C.
11 N.C.
10 SDA
9
SCL
Add 鈥?T&R鈥?for tape-and-reel orders.
*Future product.
14 TSSOP (173mil)
16 SO (150mil)
______________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim鈥檚 website at www.maxim-ic.com.
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