End-to-end resistance 5 k鈩? 10 k鈩? 50 k鈩? 100 k鈩?/div>
Compact SOT-23-8 (2.9 mm 脳 3 mm) package
SPI compatible interface
Power-on preset to midscale
Single supply 2.7 V to 5.5 V
Low temperature coefficient 45 ppm/擄C
Low power, I
DD
= 8 碌A(chǔ)
Wide operating temperature 鈥?0擄C to +125擄C
Evaluation board available
FUNCTIONAL BLOCK DIAGRAM
V
DD
A
CS
SDI
CLK
W
SPI INTERFACE
WIPER
REGISTER
B
GND
Figure 1.
APPLICATIONS
Mechanical potentiometer replacement in new designs
Transducer adjustment of pressure, temperature, position,
chemical, and optical sensors
RF amplifier biasing
Automotive electronics adjustment
Gain control and offset adjustment
PIN CONFIGURATION
W 1
V
DD
2
GND 3
AD5160
8 A
7 B
6 CS
TOP VIEW
CLK 4 (Not to Scale) 5 SDI
GENERAL OVERVIEW
The AD5160 provides a compact 2.9 mm 脳 3 mm packaged
solution for 256-position adjustment applications. These devices
perform the same electronic adjustment function as mechanical
potentiometers or variable resistors, with enhanced resolution,
solid-state reliability, and superior low temperature coefficient
performance.
The wiper settings are controllable through an SPI compatible
digital interface. The resistance between the wiper and either
end point of the fixed resistor varies linearly with respect to the
digital code transferred into the RDAC latch.
Operating from a 2.7 V to 5.5 V power supply and consuming
less than 5 碌A(chǔ) allows for usage in portable battery-operated
applications.
Figure 2.
Note:
The terms
digital potentiometer, VR,
and
RDAC
are used interchangeably.
Rev. 0
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