Wide operating voltage
range for digital pot
Analog Devices reckons the AD5263 digital potentiometer is the industry's first +15V quad-channel 256-position potentiometer with a selectable digital interface
A single +15V supply can be used with 0-15V signals, or a dual +/-5V supply can be used with +/-5V signals. Controlled from a pin-selectable three-wire SPI or a two-wire I2C-compatible data interface, the AD5263 performs the same electronic adjustment function as a mechanical trimmer, variable resistor or potentiometer, but provides higher reliability and smaller size.
Each of the four channels in the AD5263 contain a fixed resistor (20, 50 or 200kohm) with a wiper contact that taps the fixed resistor at a point determined by the digital code loaded into its register.
The AD5263 places the wiper in the midscale position at power on.
A hardware override shutdown feature shorts the wiper to the A-terminal, and open circuits the B-terminal - without disturbing the wiper register contents.
In the I2C interface mode, reset and shutdown can be individually set for each wiper, and the current wiper position can be read back by the microcontroller.
With a low temperature coefficient of 50ppm/C, this digital potentiometer is used for a wide variety of demanding applications such as: optical network laser diode adjustment, gain and offset adjustment in instrumentation, multi-channel audio level control, line impedance matching and programmable voltage to current conversion.
The AD5263 is available now in a thin, narrow body TSSOP-24 package, operates over the extended automotive temperature range of -40 to +125C, and is priced at $3.16 per unit in 1000-piece quantities.
For single- or dual-channel applications, see the companion AD5260, AD5262, AD5280 and AD5282.
? Analog Devices: contact details and other news
? Email this article to a colleague
? Register for the free Electronicstalk email newsletter
? Electronicstalk Home Page
Related Business News
Taiwan stocks end down in biggest...
...drop in over 1 yr. Taipei, July 27 (Reuters) - Taiwan shares fell 4.22 percent on Friday to their lowest close in three weeks, marking their largest one-day percentage drop in more than a year, after a sell-off on Wall Street hurt big exporters such as TSMC .
Nippon Oil Aug refining seen flat, eyes Sudan crude
Tokyo, July 27 (Reuters) - Japan's top oil refiner Nippon Oil Corp. will keep its August processing volumes steady versus a year ago to meet summer gasoline demand and is seeking more Nile Blend crude to meet higher utility use.
Fluor Gains Eastman Chemical Gasification Plant Feed Work
Fluor Corporation announced today that it was selected by Eastman Chemical Company to provide front-end engineering and design work for a $1.6 billion gasification project along the Texas Gulf Coast.
Migao Corporation Secures Preferential Natural Gas Prices
Toronto, Ontario-- - Migao Corporation , a leading producer of specialty potash fertilizers for the Chinese market, is pleased to announce that it has negotiated preferential natural gas prices in Sichuan Province from China Petroleum & Chemical Corpora
South Korean envoy to meet Afghan...
...president over hostage crisis. A Seoul presidential envoy heading to Afghanistan will seek an urgent meeting with President Hamid Karzai to try to save 22 South Koreans kidnapped by the Taliban, officials said.