AD9750

a 10-Bit, 125 MSPS High Performance TxDAC® D/A Converter AD9750* FUNCTIONAL BLOCK DIAGRAM +5V REFLO 0.1␮F +1.20V REF REFIO FS ADJ DVDD DCOM CLOCK CLOCK SLEEP DIGITAL DATA INPUTS (DB9–DB0) SEGMENTED SWITCHES LATCHES LSB SWITCH AVDD CURRENT SOURCE ARRAY ACOM 150pF FEATURES High Performance Member of Pin-Compatible TxDAC Product Family 125 MSPS Update Rate 10-Bit Resolution Excellent Spurious Free Dynamic Range Performance SFDR to Nyquist @ 5 MHz Output: 76 dBc Differential Current Outputs: 2 mA to 20 mA Power Dissipation: 190 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 Packages: 28-Lead SOIC and TSSOP Edge-Triggered Latches APPLICATIONS Wideband Communication Transmit Channel: Direct IF Basestations Wireless Local Loop Digital Radio Link Direct Digital Synthesis (DDS) Instrumentation PRODUCT DESCRIPTION AD9750 ICOMP 0.1␮F RSET +5V IOUTA IOUTB The AD9750 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 control a...