Product category:
Analogue and Mixed Signal ICs
News Release from: Catalyst Semiconductor | Subject: CAT5401 and CAT5411
Edited by the Electronicstalk Editorial
Team on 15 January 2003
Long life for programmable
potentiometers
The quad CAT5401 and dual CAT5411 are 64-tap, nonvolatile digital potentiometers that are controlled over an SPI serial bus interface.
The quad CAT5401 and dual CAT5411 are 64-tap, nonvolatile digital potentiometers that are controlled over an SPI serial bus interface Separate nonvolatile memory data registers store each digital potentiometer's wiper position and each digital potentiometer is individually adjustable
This article was originally published on Electronicstalk on 7 Feb 2002 at 8.00am (UK)
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Digitally programmable potentiometers to take over
Catalyst Semiconductor has added two new digitally programmable potentiometer (DPP) ICs to its AE2 (analogue EEPROM) mixed-signal product line.
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Catalyst Semiconductor has expanded its AE2 analogue EEPROM mixed-signal product strategy with the CAT116x series of microprocessor supervisory circuits with serial 16Kbit EEPROM.
Each DPP is capable of 1 million nonvolatile write cycles and will retain data for 100 years.
The CAT5401 and CAT5411 are offered with 2.5, 10, 50 and 100kohm end-to-end resistance options.
Wiper settings are automatically recalled during power-up.
Wiper resistance has been minimised to just 300ohm maximum with a 3V power supply and 150ohm maximum with a 5V supply.
This represents a significant three-fold improvement over competitive devices.
Typical wiper resistance is 50ohm.
Power requirement is minimal with a 1uA maximum standby current drain.
The devices operate with a single supply over a range of 2.5 to 6.0V.
"Nonvolatile DPP solutions allow wiper position to be stored during power off and the industry standard SPI interface make computer controlled system adjustments easy and fast", said Catalyst Product Marketing Manager Gary Craig.
"Catalyst has introduced nearly a dozen different DPP solutions over the last 2 years that are based on our proven nonvolatile EEPROM memory technology.
The CAT5401 and CAT5411 feature a lower wiper resistance than competitive devices.
Digitally programmable potentiometers can be used to bias laser diodes in fibre-optic transceiver modules, bias RF amplifiers, adjust display brightness and contrast, adjust sensors and trim power supply voltages".
The quad CAT5401 and dual CAT5411 digital potentiometers are available in 24-lead SOIC and 24-lead TSSOP packages.
Lead-free, halogen-free "green" SOIC and TSSOP packages are also available.
Ball grid array packages will be offered in the second quarter of 2003.
Commercial (0 to 70C) and industrial (-40 to +85C) temperature range devices are offered.
Prices start at $1.25 in 1000 piece quantities.
Devices are available for sampling now with production volume scheduled for the second quarter of 2003.
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