Low power generation

Analog Devices has developed low-power versions of its TxDAC transmit digital-to-analog converters (DACs).

The AD970x family supports update rates at 175 MSPS (Mega Samples Per Second) - and is comprised of four products: the AD9707 14-bit DAC; and the AD9706, AD9705 and AD9704, which are 12-, 10-, and 8-bit DACs, respectively.

The family features spurious-free dynamic range (SFDR) of 86 dBc and intermodulation (IMD) of 70 to 50 MHz.
All of the devices share the same interface, small outline package and pin-out, providing an upward or downward component selection path based on performance, resolution, and cost.

The AD9707 has a power supply operating range from 1.7 V to 3.6 V. At 3.3 V, the AD970x family dissipates 35 mW of power and at 1.8 V dissipates 12 mW. Its power dissipation can be further reduced by 15 mW by lowering the full-scale current output. Sleep and power down modes reduce dissipation to 5 mW for low-power idle periods.