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Rainbow-electronics DS1805 Manual de usuario

Busca en linea o descarga Manual de usuario para Hardware De La Computadora Rainbow-electronics DS1805. Rainbow Electronics DS1805 User Manual Manual de usuario

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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
♦ 3V or 5V Operation
♦ Low Power Consumption
♦ One Digitally Controlled, 256-Position
Potentiometer
♦ Compatible with DS1803-Based Designs
♦ 14-Pin TSSOP (173mil) and 16-Pin SO (150mil)
Available for Surface-Mount Applications
♦ Three Address Inputs
♦ Serial 2-Wire Bus
♦ Operating Temperature Range
Industrial: -40°C to +85°C
♦ Standard Resistance Values
DS1805-010: 10kΩ
DS1805-050*: 50kΩ
DS1805-100*: 100kΩ
DS1805
Addressable Digital Potentiometer
______________________________________________ Maxim Integrated Products 1
14
13
12
11
10
9
8
1
2
3
4
5
6
7
V
CC
N.C.
N.C.
N.C.A2
W1
L1
H1
TOP VIEW
N.C.
SDA
SCLGND
A0
A1
14 TSSOP (173mil)
DS1805E
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
H1
V
CC
N.C.
N.C.
N.C.
N.C.
N.C.
SDA
SCL
16 SO (150mil)
N.C.
L1
A1
W1
A2
A0
GND
DS1805Z
Pin Configurations
Ordering Information
PART
TEM P 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
XX-XXXX; Rev 0; 4/02
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.
Add “/T&R” for tape-and-reel orders.
*Future product.
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Indice de contenidos

Pagina 1 - Ordering Information

General DescriptionThe DS1805 addressable digital potentiometer containsa single 256-position digitally controlled potentiometer.Device control is ach

Pagina 2 - DC ELECTRICAL CHARACTERISTICS

DS1805Addressable Digital PotentiometerMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim p

Pagina 3 - AC ELECTRICAL CHARACTERISTICS

DS1805Addressable Digital Potentiometer2 _____________________________________________________________________ABSOLUTE MAXIMUM RATINGSRECOMMENDED DC O

Pagina 4

DS1805Addressable Digital Potentiometer_____________________________________________________________________ 3ANALOG RESISTOR CHARACTERISTICS(VCC= 2.7

Pagina 5 - = 5.0V, T

DS1805Addressable Digital Potentiometer4 _____________________________________________________________________Note 1: All voltages are referenced to g

Pagina 6 - Pin Description

Typical Operating Characteristics(VCC= 5.0V, TA= +25°C, unless otherwise noted.)DS1805Addressable Digital Potentiometer_______________________________

Pagina 7 - 2-Wire Serial Data Bus

DS1805Addressable Digital Potentiometer6 _____________________________________________________________________Detailed DescriptionThe DS1805 addressab

Pagina 8 - Slave Address

DS1805Addressable Digital Potentiometer_____________________________________________________________________ 7The potentiometer is composed of a 256-p

Pagina 9 - Package Information

DS1805Addressable Digital Potentiometer8 _____________________________________________________________________Stop data transfer: A change in the stat

Pagina 10 - Figure 6. Timing Diagram

DS1805Addressable Digital Potentiometer_____________________________________________________________________ 9Following the START condition, the DS180

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