DS1803Z-050 Maxim Integrated Products, DS1803Z-050 Datasheet

IC POT DUAL ADDRESS 50K 16-SOIC

DS1803Z-050

Manufacturer Part Number
DS1803Z-050
Description
IC POT DUAL ADDRESS 50K 16-SOIC
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of DS1803Z-050

Taps
256
Resistance (ohms)
50K
Number Of Circuits
2
Temperature Coefficient
750 ppm/°C Typical
Memory Type
Volatile
Interface
I²C, 2-Wire Serial
Voltage - Supply
2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
16-SOIC (3.9mm Width)
Resistance In Ohms
50K
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
DS1803Z050
PIN DESCRIPTION
L0, L1
H0, H1
W0,W1
V
A0, A1, A2
SDA
SCL
GND
NC
DESCRIPTION
The DS1803 addressable dual digital potentiometer features two independently controlled 256-position
potentiometers. Device control is achieved through a 2-wire serial interface. Three address pins allow up
to 8 DS1803’s to share the same 2-wire interface. The exact wiper position of each potentiometer can be
written or read. The DS1803 is available in a 16-pin DIP, 16-pin SO, 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.
FEATURES
www.maxim-ic.com
CC
3V or 5V Operation
Ultra-Low Power Consumption
Two Digitally Controlled, 256-Position
Potentiometers
14-Pin TSSOP (173 mil) and 16-Pin SO (150
mil) Packaging Available for Surface-Mount
Applications
Addressable Using 3 Address Inputs
2-Wire Serial Interface
Operating Temperature Range:
-
Standard Resistance Values:
-
-
-
Industrial: -40°C to +85°C
DS1803-010
DS1803-050
DS1803-100
- High End of Resistor
- Wiper terminal of Resistor
- 3V/5V Power Supply Input
- Serial Data I/O
- Serial Clock Input
- Ground
- No Connection
- Low End of Resistor
- Chip Select Inputs
10kΩ
50kΩ
100kΩ
1 of 11
Addressable Dual Digital Potentiometer
PIN ASSIGNMENT
See Mech. Drawings Section on Website
DS1803 14-PIN TSSOP (173 MIL)
GND
GND
W1
A2
A1
A0
H1
NC
L1
W1
A2
A1
A0
H1
DS1803Z 16-PIN SO (150 MIL)
L1
DS1803 16-PIN DIP (300 MIL)
1
2
3
4
6
7
1
2
3
4
5
6
7
8
5
14
13
12
11
10
16
15
14
13
12
11
10
9
8
9
VCC
NC
H0
L0
W0
SDA
SCL
VCC
NC
H0
L0
W0
NC
SDA
SCL
DS1803
110706

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DS1803Z-050 Summary of contents

Page 1

... Addressable Dual Digital Potentiometer PIN ASSIGNMENT GND 7 DS1803 14-PIN TSSOP (173 MIL GND 8 DS1803Z 16-PIN SO (150 MIL) DS1803 16-PIN DIP (300 MIL) See Mech. Drawings Section on Website DS1803 14 VCC SDA 8 SCL 16 VCC SDA 9 SCL ...

Page 2

DEVICE OPERATION The DS1803 is an addressable, digitally controlled device which has two 256-position potentiometers. A functional block diagram of the part is shown in Figure 1. Communication and control of the device is accomplished via a 2-wire serial interface. ...

Page 3

Stop data transfer: A change in the state of the data line, from LOW to HIGH, while the clock line is HIGH, defines the STOP condition. Data valid: The state of the data line represents valid data when, after a ...

Page 4

SLAVE ADDRESS The control byte is the first byte received following the START condition from the master device. The control byte consists of a four bit control code; for the DS1803, this is 0101 binary. The next three bits of ...

Page 5

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 Potentiometers COMMAND ...

Page 6

ABSOLUTE MAXIMUM RATINGS* Voltage on Any Pin Relative to Ground Operating Temperature Storage Temperature Soldering Temperature * This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the ...

Page 7

ANALOG RESISTOR CHARACTERISTICS PARAMETER End-to-End Resistor Tolerance Absolute Linearity Relative Linearity -3 dB Cutoff Frequency Temperature Coefficient Capacitance AC ELECTRICAL CHARACTERISTICS PARAMETER SCL Clock Frequency Bus Free Time Between STOP and START Condition Hold Time (Repeated) START Condition Low Period ...

Page 8

After this period, the first clock pulse is generated device must internally provide a hold time of at least 300 ns for the SDA signal (referred to the V of the SCL signal) in order to bridge ...

Page 9

DS1803 BLOCK DIAGRAM Figure 1 2–WIRE DATA TRANSFER OVERVIEW Figure ...

Page 10

CONTROL BYTE Figure 3 2–WIRE READ PROTOCOL Figure 4 2–WIRE WRITE PROTOCOL Figure 5 Write Pot ...

Page 11

... DIP T&R DS1803E-10/T&R 14L TSSOP (173 MIL) T&R DS1803E-50/T&R 14L TSSOP (173 MIL) T&R DS1803E-100/T&R 14L TSSOP (173 MIL) T&R DS1803Z-010/T&R 16L SOIC (150 MIL) T&R DS1803Z-050/T&R 16L SOIC (150 MIL) T&R DS1803Z-100/T&R 16L SOIC (150 MIL) T&R PACKAGE OPERATING VERSION TEMPERATURE -40° ...

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