AD5290_15 Datasheet, PDF (1/20 Pages) Analog Devices – Compact 30 V / 15 V 256-Position Digital Potentiometer

Data Sheet
Compact +30 V / ±15 V 256-Position
Digital Potentiometer
AD5290
FEATURES
256 position
10 kΩ, 50 kΩ, 100 kΩ
+20 V to +30 V single-supply operation
±10 V to ±15 V dual-supply operation
3-wire SPI®-compatible serial interface
Low temperature coefficient 35 ppm/°C typical
THD 0.006% typical
Midscale preset
Compact MSOP-10 package
Automotive temperature range: −40°C to +125°C
iCMOS™¹ process technology
APPLICATIONS
High voltage DAC
Programmable power supply
Programmable gain and offset adjustment
Programmable filters and delays
Actuator control
Audio volume control
Mechanical potentiometer replacement
GENERAL DESCRIPTION
The AD5290 is one of the few high voltage, high performance,
and compact digital potentiometers^{2, 3} in the market at present.
This device can be used as a programmable resistor or resistor
divider. The AD5290 performs the same electronic adjustment
function as mechanical potentiometers, variable resistors, and
trimmers, with enhanced resolution, solid-state reliability, and
superior temperature stability.
FUNCTIONAL BLOCK DIAGRAM
AD5290
V_DD
SDO
Q
A
8-BIT
8
SERIAL
REGISTER
8-BIT
LATCH
8
W
SDI
D
CK
B
RS
CLK
CS
POR
V_SS
Figure 1.
DGND
With digital rather than manual control, the AD5290 provides
layout flexibility and allows closed-loop dynamic controllability.
The AD5290 is available in MSOP-10 package and has 10 kΩ,
50 kΩ, and 100 kΩ options. All parts are guaranteed to operate
over the −40°C to +125°C extended automotive temperature range.
1 _{iCMOS™ Process Technology. For analog systems designers who need high performance ICs at higher voltage levels, iCMOS is a technology platform that enables the}
development of analog ICs capable of 30 V and operating at ±15 V supplies while allowing dramatic reductions in power consumption and package size, and
increased ac and dc performance.
2 _{The terms digital potentiometer and RDAC are used interchangeably.}
3 _{The RDAC segmentation is protected by U.S. Patent Number 5,495,245.}
Rev. C
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