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Dallas releases single digital potentiometer

Posted: 14 May 2002 ?? ?Print Version ?Bookmark and Share

Keywords:ds1805? ds1803? ds2174? single digital potentiometer? dual digital potentiometer?

Dallas Semiconductor has introduced the DS1805 single digital potentiometer that contains a single 10-kiloohm potentiometer, and is suitable for use in CCFL inverter circuits that use a two-wire bus interface.

The component is designed as a drop-in replacement for the DS1803 dual digital device in designs that require only a single potentiometer.

The DS1805 is shipped in either 16-pin SO or 14-pin TSSOP casings, and is priced at $1.18 for quantities of 1,000 and up.

The company has also released the DS2174 bit-error rate tester that supports clock rates from T1 up to OC-12 (622Mbps). The 44-pin PLCC device is software-programmable to generate and detect bit patterns necessary for error-performance monitoring in digital transmission systems.

It includes an 8-bit parallel-control port to access control registers and a choice of bit-serial, nibble-parallel, or byte-parallel data interfaces. It is capable of generating and synchronizing to pseudorandom patterns up to 2(32) - 1 bits in length and user-defined repetitive patterns up to 512 bytes in length.

48-bit count and bit error count registers are used to detect bit error rates of up to 10(-2).

The DS2174 is priced starting at $19.50.

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