GENERAL DESCRIPTION

The AD9142 is a dual, 16-bit, high dynamic range digital-to-analog converter (DAC) that provides a sample rate of 1600 MSPS, permitting a multicarrier generation up to the Nyquist frequency.

FEATURES

Very small inherent latency variation: <2 DAC clock cycles

Proprietary low spurious and distortion design

6-carrier GSM ACLR = 79 dBc at 200 MHz IF

SFDR > 85 dBc (bandwidth = 300 MHz) at ZIF

Flexible 16-bit LVDS interface

Supports word and byte load

Multiple chip synchronization

Fixed latency and data generator latency compensation

Selectable 2×, 4×, 8× interpolation filter

Low power architecture

fS/4 power saving coarse mixer

Input signal power detection

Emergency stop for downstream analog circuitry

protection

FIFO error detection

On-chip numeric control oscillator allows carrier placement

anywhere in the DAC Nyquist bandwidth

Transmit enable function for extra power saving

High performance, low noise PLL clock multiplier

Digital gain and phase adjustment for sideband suppression

Digital inverse sinc filter

Supports single DAC mode

Low power: 2.0 W at 1.6 GSPS, 1.7 W at 1.25 GSPS, full

operating conditions

72-lead LFCSP

APPLICATIONS

Wireless communications: 3G/4G and MC-GSM base stations,

wideband repeaters, software defined radios

Wideband communications: point-to-point, LMDS/MMDS

Transmit diversity/MIMO

Instrumentation

Automated test equipment