GENERAL DESCRIPTION

The AD9146 is a dual, 16-bit, high dynamic range digital-to-analog converter (DAC) that provides a sample rate of 1000 MSPS with nominal supplies and 1230 MSPS with increased supplies, permitting multicarrier generation up to the Nyquist frequency.

FEATURES

Flexible LVDS interface allows byte or nibble load

Single-carrier W-CDMA ACLR = 80 dBc at 122.88 MHz IF

Analog output: adjustable 8.7 mA to 31.7 mA, RL = 25 Ω to 50 Ω

Integrated 2×/4× interpolator/complex modulator allows

carrier placement anywhere in the DAC bandwidth

Gain, dc offset, and phase adjustment for sideband

suppression

Multiple chip synchronization interfaces

High performance, low noise PLL clock multiplier

Digital inverse sinc filter

Low power: 1.2 W at 1.0 GSPS, 800 mW at 500 MSPS,

full operating conditions

48-lead, exposed paddle LFCSP

APPLICATIONS

Wireless infrastructure

W-CDMA, CDMA2000, TD-SCDMA, WiMAX, GSM, LTE

Digital high or low IF synthesis

Transmit diversity

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