AD5293 Datasheet, PDF (1/20 Pages) Analog Devices – Single-Channel, 1024-Position, 1% R-Tolerance Digital Potentiometer

Single-Channel, 1024-Position,
1% R-Tolerance Digital Potentiometer
AD5293
FEATURES
Single-channel, 1024-position resolution
20 kΩ nominal resistance
Calibrated 1% nominal resistor tolerance (resistor
performance mode 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
Wiper setting readback
APPLICATIONS
Mechanical potentiometer replacement
Instrumentation: gain and offset adjustment
Programmable voltage-to-current conversion
Programmable filters, delays, and time constants
Programmable power supply
Low resolution DAC replacement
Sensor calibration
GENERAL DESCRIPTION
The AD5293 is a single-channel, 1024-position digital poten-
tiometer¹ with <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.
1 _{In this data sheet, the terms digital potentiometer and RDAC are used inter-}
changeably.
FUNCTIONAL BLOCK DIAGRAM
V_DD
RESET
POWER-ON
RESET
AD5293
V_LOGIC
SCLK
RDAC
10
REGISTER
A
SERIAL
SYNC
INTERFACE
W
DIN
B
SDO
RDY
V_SS
EXT_CAP
Figure 1.
GND
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.
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone]
www.analog.com
Fax: [phone]
©2009 Analog Devices, Inc. All rights reserved.