Catalyst Semiconductor has added five 32-tap devices to its family of digitally programmable potentiometers (DPPs). The CAT5123, CAT5124 and CAT5125 are volatile devices, while the CAT5127 and CAT5129 offer non-volatile wiper storage. All of the digital potentiometers feature a user-friendly up/down control interface. Resistance values include 10 kΩ, 50 kΩ and 100 kΩ.

The CAT5127 is packaged in an 8-lead, 2 mm x 2.5 mm, TDFN package. The CAT5127 is also available in an 8-lead MSOP package. Both packages are pin-for-pin replacements for Intersil’s X93154. The CAT5129 comes in a 6-lead SOT23 package and is a pin-for-pin replacement for Maxim’s MAX5471 digital potentiometer. The CAT5123, CAT5124 and CAT5125 are available in SOT23 packages and offer pin-for-pin replacements for Maxim’s MAX5466, MAX5467 and MAX5468 devices. With their small size, these digital potentiometers are ideal for gain adjustment or line impedance matching.

The new digital potentiometers are silicon-based and insensitive to mechanical vibrations, shock and oxidation, making them higher reliability alternatives to mechanical potentiometers across most environmental conditions.

These digital potentiometers are priced at $0.43 in 10,000-piece quantities, except for the CAT5127 TDFN package, which is $0.53. Samples are now available.