AD9775BSVZ

The AD9775BSVZ is a 14-bit dual digital-to-analog converter from Analog Devices, part of the TxDAC+ family. It supports a maximum sampling rate of 400 MSPS with an input data rate up to 160 MSPS. The device includes a selectable 2x/4x/8x interpolation filter, an internal PLL clock multiplier, and a direct IF mode for frequencies up to 70 MHz and above.

Key electrical specifications include a settling time of 11 ns (typical), integral nonlinearity of ±1.5 LSB, and differential nonlinearity of ±1 LSB. Typical AC performance shows SFDR of -71 dBc (from 2 MHz to 35 MHz) and W-CDMA ACPR of -71 dB at IF = 19.2 MHz. The device uses an oversampling interpolating DAC architecture and provides differential current output (unbuffered).

The DAC operates from a single 3.3V supply with typical power dissipation of 1.2 W. It has a 1.2 V internal reference and supports both external and internal reference modes. The parallel data interface accepts straight binary or twos complement coding via dual-port or single-port interleaved input.

Packaged in an 80-lead TQFP with exposed pad (80-TQFP-EP, 12x12 mm), the AD9775BSVZ is surface-mount compatible. Operating temperature range is -40°C to +85°C. The part is RoHS3 compliant and lead-free.