Analog Devices has introduced eight digital-to-analogue chips for RF transmission, each of which has two DACs on board.

DACs are 14, 12, 10 or 8bit, sampling up to 125Msample/s, with a single, pin-compatible architecture and common software code.

There are two series, the AD911x and AD971x. AD971x devices have 1 to 4mA maximum differential output current. Power dissipation at 2mA out is 37mW and 10Msample/s, and 53mW at 50Msample/s.

These are aimed at limited-range wireless equipment - picocells and femtocells - and battery-powered medical, industrial and instrumentation applications.

AD911x chips have 4 to 20mA differential outputs and are aimed at automotive, medical, instrumentation and communication. They dissipate 220mW at their maximum sample rate and achieve 85dB SFDR to 10 MHz.

In 6x6mm packages, all devices include an internal calibrator to improved INL and DNL up to 10MHz out; a voltage reference; independent full-scale current control; load and common-mode resistors; and a pair of auxiliary DACs for generating control voltages or system calibration.

More information: www.analog.com