Four-Channel, 16-b DAC Runs At 1.25 GSamples/s

摘要

A four-channel, 16-b digital-to-analog converter (DAC) has been spawned to help wireless base-station manufacturers increase bandwidth performance without raising power consumption. At 1.25 GSamples/s, the DAC3484 claims to be 25 percent faster than its closest competitor while consuming as little as 250 mW per channel. The DAC3484 is also 40 percent smaller than alternative quad-DAC solutions. Its 16-b interleaved, high-speed, 1.25-GSample/s input vows to halve the input/output (I/O) count compared to devices using slower-rate I/Os. With a low-jitter, 2X to 32X phase-locked loop (PLL), the DAC also eliminates the need for an external, low-jitter clock multiplier to match the interpolated rate.