1-GSPS quad DAC yields design efficiency in wireless base stations

Norwood, Mass.—Analog Devices Inc. (ADI) is calling its latest 16-bit DAC the industry's first high-speed quad device to provide support for multi-antenna wireless communications standards requiring the large bandwidths demanded by DPD (digital pre-distortion) transmit systems.

According to ADI, the AD9148 has a 1-GSPS (giga-sample per second) data rate and cuts component count in half relative to dual-channel DACs. Its 12 mm x 12 mm package size allows designers of WCDMA, CDMA2000, TD-SCDMA, GSM and WiMax infrastructure equipment and other wireless applications to reduce PCB (printed circuit board) space by 20 percent, the company added.

Additional features include an on-chip 32-bit numerically controlled oscillator for complex modulation schemes; 2-, 4- and 8-times interpolation; dual-port, time-interleaved LVDS interface with single port or byte-mode support to enable high data rates; and 8-deep FIFO memory to ease timing layout.

It also delivers noise spectral density of -158dBm/Hz and on-chip support for multi-DAC synchronization.

Pricing: $58.60 in 1k unit quantities.
Availability: Now.
Datasheet: Click here.


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