DS1805E-010+ Maxim Integrated Products, DS1805E-010+ Datasheet - Page 6

• Manufacturer Part Number: DS1805E-010+
• Description: IC POT DIG ADDRESS 10K 14-TSSOP
• Manufacturer: Maxim Integrated Products

Specifications of DS1805E-010+

• Taps: 256
• Resistance (ohms): 10K
• Number Of Circuits: 1
• 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: 14-TSSOP
• Resistance In Ohms: 10K
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Addressable Digital Potentiometer
Figure 1. Functional Diagram
6
TSSOP
6, 5, 4
10–13
14
1
2
3
7
8
9
_____________________________________________________________________
PIN
2, 11–15
7, 6, 5
SO
10
16
1
3
4
8
9
A0, A1, A2
NAME
GND
SDA
N.C.
SCL
V
W1
H1
L1
CC
2-WIRE SERIAL
INTERFACE
Pin Description
SDA
SCL
SRAM
REG-0 (8-BIT REGISTER)
High End of
Potentiometer
Low End of
Potentiometer
Wiper Terminal of
Potentiometer
Address Select Inputs
Ground
Serial Clock Input
Serial Data I/O
No Connection
3V/5V Power-Supply
Input
FUNCTION
DEVICE ADDRESS
COMMAND/
SELECTION
CONTROL
UNIT
L1
WIPER-1 (8-BIT REGISTER)
256-TO-1 MULTIPLEXER
POTENTIOMETER-1
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 single
2-wire bus. The exact wiper position of the potentiometer
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 values: 10kΩ, 50kΩ, and
100kΩ. The DS1805 specified over the industrial temper-
ature range. The DS1805 is provides a low-cost alterna-
tive for designs based on the DS1803, but require only a
single potentiometer.
The DS1805 is an addressable, digitally controlled
device that has a single 256-position potentiometer.
Figure 1 shows a block diagram of the part.
Communication and control of the device is accom-
plished through a 2-wire serial interface that has SDA
and SDL signals. Device addressing is attained using
the device chip-select inputs A0, A1, and A2.
A0
A1
A2
H1
W1
Detailed Description
Device Operation