AD9754

a 14-Bit, 125 MSPS High Performance TxDAC® D/A Converter AD9754* FUNCTIONAL BLOCK DIAGRAM +5V REFLO +1.20V REF REFIO FS ADJ DVDD DCOM CLOCK CLOCK SLEEP DIGITAL DATA INPUTS (DB13–DB0) SEGMENTED SWITCHES LSB SWITCHES AVDD CURRENT SOURCE ARRAY 150pF ACOM 0.1␮F 0.1␮F FEATURES High Performance Member of Pin-Compatible TxDAC Product Family 125 MSPS Update Rate 14-Bit Resolution Excellent Spurious Free Dynamic Range Performance SFDR to Nyquist @ 5 MHz Output: 83 dBc Differential Current Outputs: 2 mA to 20 mA Power Dissipation: 185 mW @ 5 V Power-Down Mode: 20 mW @ 5 V On-Chip 1.20 V Reference CMOS-Compatible +2.7 V to +5.5 V Digital Interface Package: 28-Lead SOIC, TSSOP Packages Edge-Triggered Latches APPLICATIONS Wideband Communication Transmit Channel: Direct IF Basestations Wireless Local Loop Digital Radio Link Direct Digital Synthesis (DDS) Instrumentation PRODUCT DESCRIPTION AD9754 ICOMP RSET +5V IOUTA IOUTB LATCHES The AD9754 is a current-output DAC with a nominal full-scale output current of 20 mA and > 100 kΩ output impedance. Differential current outputs are provided to support singleended or differential applications. Matching between the two current outputs ensures enhanced dynamic performance in a differential output configuration. The current outputs may be tied directly to an output resistor to provide two complementary, single-ended voltage outputs or fed directly into a transformer. The output voltage compliance range is 1.25 V. The on-chip reference and c...