Single-Channel, 1024-Position,
1% R-Tolerance Digital Potentiometer
AD5293
FEATURES
FUNCTIONAL BLOCK DIAGRAM
V
RESET
DD
Single-channel, 1024-position resolution
20 kΩ, 50 kΩ, and 100 kΩ nominal resistance
Calibrated 1% nominal resistor tolerance (resistor
performance mode)
Rheostat mode temperature coefficient: 35 ppm/°C
Voltage divider temperature coefficient: 5 ppm/°C
Single-supply operation: 9 V to 33 V
Dual-supply operation: 9 V to 16.5 V
SPI-compatible serial interface
POWER-ON
RESET
AD5293
V
LOGIC
RDAC
REGISTER
10
SCLK
SYNC
A
SERIAL
INTERFACE
W
DIN
Wiper setting readback
B
SDO
APPLICATIONS
RDY
Mechanical potentiometer replacement
Instrumentation: gain and offset adjustment
Programmable voltage-to-current conversion
Programmable filters, delays, and time constants
Programmable power supply
V
EXT_CAP
GND
SS
Figure 1.
Low resolution DAC replacements
Sensor calibration
GENERAL DESCRIPTION
The AD5293 is a single-channel, 1024-position digital
potentiometer1 with a <1% end-to-end resistor tolerance error.
The AD5293 performs the same electronic adjustment function as
a mechanical potentiometer with enhanced resolution, solid state
reliability, and superior low temperature coefficient performance.
This device is capable of operating at high voltages and supporting
both dual-supply operation at 10.5 V to 15 V and single-supply
operation at 21 V to 30 V.
The AD5293 offers guaranteed industry-leading low resistor
tolerance errors of 1% with a nominal temperature coefficient
of 35 ppm/°C. The low resistor tolerance feature simplifies open-
loop applications as well as precision calibration and tolerance
matching applications.
The AD5293 is available in a compact 14-lead TSSOP package.
The part is guaranteed to operate over the extended industrial
temperature range of −40°C to +105°C.
1 In this data sheet, the terms digital potentiometer and RDAC are used
interchangeably.
Rev. D
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