Adding to ADI's extensive high speed DAC portfolio, the AD971x and AD911x families of new pin-compatible TxDAC® dual transmit DACs are designed for demanding, high performance applications where low power consumption and space savings yield significant cost, performance, and time-to-market advantages. Dissipating only 220 mW at their maximum 125 MSPS sample rate, the AD911x series of dual TxDAC devices consumes 40% less power and is one-third the size of competing transmit DACs. They achieve 10 dB better SFDR (spurious-free dynamic range) performance. The AD971x series of dual TxDAC devices, with a 2 mA full-scale output current, is even more energy efficient—consuming 70% less power than competing solutions.

Both families include choices of 14-bit, 12-bit, 10-bit, and 8-bit resolutions, with all supporting data rates up to 125 MSPS. All members of these families are pin-compatible and software-compatible, easing system design changes to accommodate different resolutions or alternate full-scale outputs. These DACs also incorporate additional features, such as calibration for improved INL and DNL performance up to a 10 MHz output frequency, internal voltage reference, independent full-scale current control, on-chip load and common-mode resistors, and two auxiliary DACs for generating control voltages or system calibration. These benefits, combined with the small 6 mm × 6 mm, 40-lead LFCSP package size, enable these new DAC families to reduce board space, power dissipation, and parts count without sacrificing performance.

The AD971x and AD911x devices offer a seamless interface to ADI's high performance quadrature modulators, such as the ADL5370. If a single-ended or differential-buffered voltage output is needed, both the ADA4899-1 and ADA4841-2 operational amplifiers offer an excellent choice. Additionally, each device operates seamlessly with ADI's AD9513 clock distribution IC and ADI's new line of voltage regulators, which includes the ADP3334 and ADP3333.