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PDF DS1805 Data sheet ( Hoja de datos )
| Número de pieza | DS1805 | |
| Descripción | Addressable Digital Potentiometer | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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Rev 1; 9/06
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: 10kΩ, 50kΩ, and 100kΩ. 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.
Applications
CCFL Inverters
PDAs and Cell Phones
Portable Electronics
Multimedia Products
Instrumentation and Industrial Controls
Features
o 3V or 5V Operation
o Low Power Consumption
o One Digitally Controlled, 256-Position
Potentiometer
o Compatible with DS1803-Based Designs
o 14-Pin TSSOP (173mil) and 16-Pin SO (150mil)
Available for Surface-Mount Applications
o Three Address Inputs
o Serial 2-Wire Bus
o Operating Temperature Range
Industrial: -40°C to +85°C
o Standard Resistance Values
DS1805-010: 10kΩ
DS1805-050*: 50kΩ
DS1805-100*: 100kΩ
TOP VIEW
Pin Configurations
H1 1
L1 2
W1 3
A2 4
A1 5
A0 6
GND 7
DS1805E
14 VCC
13 N.C.
12 N.C.
11 N.C.
10 N.C.
9 SDA
8 SCL
14 TSSOP (173mil)
H1 1
N.C. 2
L1 3
W1 4
A2 5
A1 6
A0 7
GND 8
DS1805Z
16 VCC
15 N.C.
14 N.C.
13 N.C.
12 N.C.
11 N.C.
10 SDA
9 SCL
16 SO (150mil)
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
RESISTANCE
(KΩ)
DS1805E-010 -40°C to +85°C 14 TSSOP (173mil)
10
DS1805E-050* -40°C to +85°C 14 TSSOP (173mil)
50
DS1805E-100* -40°C to +85°C 14 TSSOP (173mil)
100
DS1805Z-010 -40°C to +85°C 16 SO (150mil)
10
DS1805Z-050* -40°C to +85°C 16 SO (150mil)
50
DS1805Z-100* -40°C to +85°C 16 SO (150mil)
100
Add “/T&R” for tape-and-reel orders.
*Future product.
______________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1 page  
Addressable Digital Potentiometer
(VCC = 5.0V, TA = +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. TEMPERATURE
30
25 VCC = 5V
20
VCC = 3V
15
10
8
6
10 4
52
Typical Operating Characteristics
W-L RESISTANCE
vs. WIPER SETTING
10kΩ POTENTIOMETER
WIPER RESISTANCE vs.
WIPER VOLTAGE (10kΩ)
350
VCC = 5V
300
250
VCC = 3V
200
150
100
50
0
-40 -20
0 20 40 60
TEMPERATURE (°C)
80
0
0 25 50 75 100 125 150 175 200 225 250
WIPER SETTING
0
012345
WIPER VOLTAGE (V)
VOLTAGE DIVIDER PERCENT CHANGE
(FROM +25°C) vs. TEMPERATURE
(RATIOMETRIC TC)
0.06
10kΩ POT
WIPER = 3Fh
0.04
WIPER = 7Fh
0.02 WIPER = BFh
0
-0.02
-0.04
-0.06
-40
WIPER = BFh
TC = 8.1ppm/°C
TC = 1.3ppm/°C
WIPER = 3Fh
-20 0 20 40 60 80
TEMPERATURE (°C)
END-TO-END RESISTANCE TEMPERATURE
CHANGE vs. TEMPERATURE
5
4
3
2
10kΩ, WORST CASE
1
0
-1
-2
-3 TC = 530ppm/°C
-4
-5
-40 -20 0
20 40 60
TEMPERATURE (°C)
80
50
45
40
35
30
25
20
15
10
5
0
0
ACTIVE SUPPLY CURRENT
vs. SCL FREQUENCY
SDA = VCC
A0, A1, A2, L1 = GND
W1, H1 = NO CONNECT
100 200 300
SCL FREQUENCY (kHz)
400
VOLTAGE-DIVIDER ABSOLUTE LINEARITY
vs. WIPER SETTING (10kΩ)
0.18
0.16
0.14
0.12
0.10
0.08
0.06
0.04
0.02
0
0 50 100 150 200 250
WIPER SETTING
VOLTAGE-DIVIDER RELATIVE LINEARITY
vs. WIPER SETTING (10kΩ)
0.06
0.05
0.04
0.03
0.02
0.01
0
-0.01
0
50 100 150 200
WIPER SETTING
250
_____________________________________________________________________ 5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet DS1805.PDF ] | |
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