AD5263_12 Datasheet, PDF (1/28 Pages) Analog Devices – Quad, 15 V, 256-Position, Digital Potentiometer with Pin-Selectable SPI/I2C

Data Sheet
Quad, 15 V, 256-Position, Digital
Potentiometer with Pin-Selectable SPI/I²C
AD5263
FEATURES
256-position, 4-channel
End-to-end resistance 20 kΩ, 50 kΩ, 200 kΩ
Pin-selectable SPI®- or I²C®-compatible interface
Power-on preset to midscale
Two package address decode pins AD0 and AD1
Rheostat mode temperature coefficient 30 ppm/°C
Voltage divider temperature coefficient 5 ppm/°C
Wide operating temperature range –40°C to +125°C
10 V to 15 V single supply; ±5 V dual supply
APPLICATIONS
Mechanical potentiometer replacement
Optical network adjustment
Instrumentation: gain, offset adjustment
Stereo channel audio level control
Automotive electronics adjustment
Programmable power supply
Programmable filters, delays, time constants
Line impedance matching
Low resolution DAC/trimmer replacement
Base station power amp biasing
Sensor calibration
V_DD
V_SS
SHDN
RES/AD1
FUNCTIONAL BLOCK DIAGRAM
A1 W1 B1 A2 W2 B2 A3 W3 B3 A4 W4 B4
RDAC 1
REGISTER
RDAC 2
REGISTER
RDAC 3
REGISTER
RDAC 4
REGISTER
V_L
CLK/SCL
SDI/SDA
CS/AD0
GND
ADDRESS
DECODER
SPI/I²C
SELECT
LOGIC
8
SERIAL INPUT
REGISTER
AD5263
DIS
NC/O2 SDO/O1
Figure 1.
GENERAL DESCRIPTION
The AD5263 is the industry’s first quad-channel, 256-position,
digital potentiometer¹ with a selectable digital interface. 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.
Each channel of the AD5263 offers a completely programmable
value of resistance between the A terminal and the wiper or
between the B terminal and the wiper. The fixed A-to-B
terminal resistance of 20 kΩ, 50 kΩ, or 200 kΩ has a nominal
temperature coefficient of ±30 ppm/°C and a ±1% channel-to-
channel matching tolerance. Another key feature of this part is
the ability to operate from +4.5 V to +15 V, or at ±5 V.
Wiper position programming presets to midscale upon power-
on. Once powered, the VR wiper position is programmed by
either the 3-wire SPI or 2-wire I²C-compatible interface. In the
I²C mode, additional programmable logic outputs enable users
to drive digital loads, logic gates, and analog switches in their
systems.
The AD5263 is available in a narrow body, 24-lead TSSOP.
All parts are guaranteed to operate over the automotive
temperature range of –40°C to +125°C.
For single- or dual-channel applications, refer to the
AD5260/AD5280 or AD5262/AD5282 data sheets.
1 _{The terms digital potentiometer, VR, and RDAC are used interchangeably.}
Rev. F
Document Feedback
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] ©2003–2012 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com