PRODUCT DESCRIPTION

The AD9784 is a 14-bit, high speed, CMOS DAC with 2×/4×/8× interpolation and signal processing features tuned for communications applications. It offers state of the art distortion and noise performance. The AD9784 was developed to meet the demanding performance requirements of multicarrier and third generation base stations. The selectable interpolation filters simplify interfacing to a variety of input data rates while also taking advantage of oversampling performance gains. The modulation modes allow convenient bandwidth placement and selectable sideband suppression.

FEATURES

14-bit resolution, 200 MSPS input data rate

Selectable 2×/4×/8× interpolation filters

Selectable fDAC/2, fDAC/4, fDAC/8 modulation modes

Single or dual-channel signal processing

Selectable image rejection Hilbert transform

Flexible calibration engine

Direct IF transmission features

Serial control interface

Versatile clock and data interface

SFDR: 90 dBc @10 MHz

WCDMA ACLR = 80 dBc @ 40 MHz IF

DNL = ±0.75 LSB

INL = ±1.5 LSB

3.3 V compatible digital Interface

On-chip 1.2 V reference

80-lead thermally enhanced TQFP package

APPLICATIONS

Digital quadrature modulation architectures

Multicarrier WCDMA, GSM, TDMA, DCS,

PCS, CDMA Systems