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PDF DS1803 Data sheet ( Hoja de datos )
| Número de pieza | DS1803 | |
| Descripción | Addressable Dual Digital Potentiometer | |
| Fabricantes | Dallas Semiconducotr | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de DS1803 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
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DS1803
Addressable Dual Digital Potentiometer
www.dalsemi.com
FEATURES
§ 3V or 5V Power Supplies
§ Ultra-low power consumption
§ Two digitally controlled, 256-position
potentiometers
§ 14-Pin TSSOP (173 mil) and 16-Pin SOIC
(150 mil) packaging available for surface
mount applications
§ Addressable using 3-Chip Select Inputs
§ Serial/Synchronous Bus Inputs
§ Operating Temperature Range:
- Industrial: -40°C to +85°C
§ Standard Resistance Values:
- DS1803-010 10kΩ
- DS1803-050 50kΩ
- DS1803-100 100kΩ
PIN DESCRIPTION
L0, L1
- Low End of Resistor
H0, H1
- High End of Resistor
W0,W1
- Wiper terminal of Resistor
VCC
A0..A2
- 3V/5V Power Supply Input
- Chip Select Inputs
SDA
- Serial Data I/O
SCL - Serial Clock Input
GND
- Ground
NC - No connection
PIN ASSIGNMENT
H1
L1
W1
A2
A1
A0
GND
1
2
3
4
5
6
7
14 VCC
13 NC
12 H0
11 L0
10 W0
9 SDA
8 SCL
DS1803 14-PIN TSSOP (173 MIL)
H1
NC
L1
W1
A2
A1
A0
GND
1
2
3
4
5
6
7
8
16 VCC
15 NC
14 H0
13 L0
12 W0
11 NC
10 SDA
9 SCL
DS1803Z 16-PIN SOIC (150 MIL)
DS1803 16-PIN DIP (300 MIL)
See mech. Drawings Section
DESCRIPTION
The DS1803 Addressable Dual Digital Potentiometer is an addressable device having two independently
controlled potentiometers. Each potentiometer’s wiper can be set to one of 256 positions. Device control
is achieved via a 2-wire serial interface having a data I/O terminal and a clock input terminal. Device
addressing is provided through three chip select input terminals and correct communication protocol.
Addressing capability, when operating in a bus topology, allows up to eight devices to be controlled by
the serial interface. The exact wiper position of each potentiometer can be written or read. The DS1803
is available in a 16-pin DIP, 16-pin SOIC and 14-pin TSSOP package. The device is available in three
standard resistance values: 10kΩ , 50kΩ , and 100kΩ , and is specified over the industrial temperature
range.
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101599
1 page  
DS1803
allows the user to write both potentiometers to the same value with one command and one data value
being issued.
All the write operations begin with a START condition. Following the START condition, the master
device will issue the control byte. The read/write bit of the control byte will be set to ‘0’for writing the
DS1803. Once the control byte has been issued and the master receives the acknowledgment from the
DS1803, the command byte is transmitted to the DS1803. As mentioned above, there exist three write
operations that can be used with the DS1803. The binary value of each write command is shown in Figure
5 and also in the Table 1.
2-WIRE COMMAND WORDS Table 1
COMMAND
Write Potentiometer-0
Write Potentiometer-1
Write Both Pots
COMMAND VALUE
101010 01
101010 10
101011 11
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5 Page 
TIMING DIAGRAM Figure 6
DS1803
DS1803 ORDERING INFORMATION
ORDERING
NUMBER
PACKAGE
DS1803-010
16L DIP
DS1803-050
16L DIP
DS1803-100
16L DIP
DS1803E-010
14L TSSOP (173 MIL)
DS1803E-050
14L TSSOP (173 MIL)
DS1803E-100
14L TSSOP (173 MIL)
DS1803Z-010
16L SOIC (150 MIL)
DS1803Z-050
16L SOIC (150 MIL)
DS1803Z-100
16L SOIC (150 MIL)
OPERATING
TEMPERATURE
-40°C TO +85°C
-40°C TO +85°C
-40°C TO +85°C
-40°C TO +85°C
-40°C TO +85°C
-40°C TO +85°C
-40°C TO +85°C
-40°C TO +85°C
-40°C TO +85°C
VERSION
10kO
50kO
100kO
10kO
50kO
100kO
10kO
50kO
100kO
11 of 11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet DS1803.PDF ] | |
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