AD5290 Datasheet, PDF (1/11 Pages) Analog Devices – Compact +30V/±15V 256-Position Digital Potentiometer

Preliminary Technical Data
Compact +30V/±15V 256-Position Digital
Potentiometer
AD5290
FEATURES
256-position
+2.7V to +30V Single Supply Operation
±2.7V to ±15V Dual Supply Operation
End-to-end resistance 10 kΩ, 50 kΩ, 100 kΩ
Low temperature coefficient 35 ppm/°C
Power-on preset to midscale
SPI compatible interface
Automotive temperature range –40°C to +105°C
Compact MSOP-10 (3 mm × 4.9 mm) package
APPLICATIONS
Programmable Gain and Offset
Programmable Power Supply
Industrial Actuator Control
LED Array Driver
Audio Volume Control
General Purpose DAC Replacement
Mechanical Potentiometer Replacement
GENERAL OVERVIEW
The AD5290 is a low cost, compact 2.9 mm × 3 mm
+30V/±15V, 256-position digital potentiometer. This device
performs 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.
The AD5290 is available in 10k, 50k, and 100kΩ in compact
MSOP-10 package. AD5290 can be operated from a single
supply +2.7 V to +30 V or dual supply ±2.7 V to ±15 V. All
parts are guaranteed to operate over the automotive
temperature range of -40°C to +105°C.
SDO
SDI
CLK
CS
FUNCTIONAL BLOCK DIAGRAM
AD5290
Q
8-Bit
8 8-Bit 8
SERIAL
LATCH
REG
D
CK
RS
POR
VDD
A
W
B
V_SS
Figure 1.
DG ND
Note:
The terms digital potentiometer and RDAC are used interchangeably.
Rev. PrC
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