14-Bit, 125 MSPS High Performance a TxDAC D/A Converter AD9754* FUNCTIONAL BLOCK DIAGRAM FEATURES +5V High Performance Member of Pin-Compatible TxDAC Product Family REFLO AVDD ACOM 150pF 125 MSPS Update Rate +1.20V REF AD9754 0.1mF 14-Bit Resolution REFIO 0.1mF CURRENT ICOMP Excellent Spurious Free Dynamic Range Performance FS ADJ SOURCE ARRAY SFDR to Nyquist 5 MHz Output: 83 dBc R SET +5V DVDD IOUTA Differential Current Outputs: 2 mA to 20 mA LSB SEGMENTED DCOM IOUTB SWITCHES SWITCHES Power Dissipation: 185 mW 5 V CLOCK Power-Down Mode: 20 mW 5 V CLOCK LATCHES SLEEP On-Chip 1.20 V Reference DIGITAL DATA INPUTS (DB13DB0) CMOS-Compatible +2.7 V to +5.5 V Digital Interface Package: 28-Lead SOIC, TSSOP Packages The AD9754 is a current-output DAC with a nominal full-scale Edge-Triggered Latches output current of 20 mA and > 100 kW output impedance. APPLICATIONS Differential current outputs are provided to support single- Wideband Communication Transmit Channel: ended or differential applications. Matching between the two Direct IF current outputs ensures enhanced dynamic performance in a Basestations differential output configuration. The current outputs may be Wireless Local Loop tied directly to an output resistor to provide two complemen- Digital Radio Link tary, single-ended voltage outputs or fed directly into a trans- Direct Digital Synthesis (DDS) former. The output voltage compliance range is 1.25 V. Instrumentation The on-chip reference and control amplifier are configured for PRODUCT DESCRIPTION maximum accuracy and flexibility. The AD9754 can be driven The AD9754 is a 14-bit resolution, wideband, second genera- by the on-chip reference or by a variety of external reference tion member of the TxDAC series of high performance, low voltages. The internal control amplifier, which provides a wide power CMOS digital-to-analog-converters (DACs). The (>10:1) adjustment span, allows the AD9754 full-scale current TxDAC family, which consists of pin compatible 8-, 10-, 12- to be adjusted over a 2 mA to 20 mA range while maintaining and 14-bit DACs, is specifically optimized for the transmit excellent dynamic performance. Thus, the AD9754 may operate signal path of communication systems. All of the devices share at reduced power levels or be adjusted over a 20 dB range to the same interface options, small outline package and pinout, provide additional gain ranging capabilities. providing an upward or downward component selection path based on performance, resolution and cost. The AD9754 offers The AD9754 is available in 28-lead SOIC and TSSOP packages. exceptional ac and dc performance while supporting update It is specified for operation over the industrial temperature range. rates up to 125 MSPS. PRODUCT HIGHLIGHTS The AD9754s flexible single-supply operating range of +4.5 V to 1. The AD9754 is a member of the wideband TxDAChigh per- +5.5 V and low power dissipation are well suited for portable and formance product family that provides an upward or downward low power applications. Its power dissipation can be further reduc- component selection path based on resolution (8 to 14 bits), ed to a mere 65 mW with a slight degradation in performance by performance and cost. The entire family of TxDACs is avail- lowering the full-scale current output. Also, a power-down mode able in industry standard pinouts. reduces the standby power dissipation to approximately 20 mW. 2. Manufactured on a CMOS process, the AD9754 uses a The AD9754 is manufactured on an advanced CMOS process. proprietary switching technique that enhances dynamic per- A segmented current source architecture is combined with a formance beyond that previously attainable by higher power/ proprietary switching technique to reduce spurious components cost bipolar or BiCMOS devices. and enhance dynamic performance. Edge-triggered input latches 3. On-chip, edge-triggered input CMOS latches readily inter- and a 1.2 V temperature compensated bandgap reference have face to +2.7 V to +5 V CMOS logic families. The AD9754 been integrated to provide a complete monolithic DAC solution. can support update rates up to 125 MSPS. The digital inputs support +2.7 V and +5 V CMOS logic families. 4. A flexible single-supply operating range of +4.5 V to +5.5 V, TxDAC is a registered trademark of Analog Devices, Inc. and a wide full-scale current adjustment span of 2 mA to *Protected by U.S. Patents Numbers 5450084, 5568145, 5689257, 5612697 and 20 mA, allows the AD9754 to operate at reduced power levels. 5703519. 5. The current output(s) of the AD9754 can be easily config- REV. A ured for various single-ended or differential circuit topologies. Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. use, nor for any infringements of patents or other rights of third parties Tel: 781/329-4700 World Wide Web Site: AD9754* PRODUCT PAGE QUICK LINKS Last Content Update: 02/23/2017 COMPARABLE PARTS REFERENCE MATERIALS View a parametric search of comparable parts. Informational Advantiv Advanced TV Solutions EVALUATION KITS Solutions Bulletins & Brochures AD9754 Evaluation Board Digital to Analog Converters ICs Solutions Bulletin DOCUMENTATION DESIGN RESOURCES Application Notes AD9754 Material Declaration AN-237: Choosing DACs for Direct Digital Synthesis PCN-PDN Information AN-320A: CMOS Multiplying DACs and Op Amps Combine Quality And Reliability to Build Programmable Gain Amplifier, Part 1 Symbols and Footprints AN-595: Understanding Pin Compatibility in the TxDAC Line of High Speed D/A Converters DISCUSSIONS AN-912: Driving a Center-Tapped Transformer with a View all AD9754 EngineerZone Discussions. Balanced Current-Output DAC Data Sheet SAMPLE AND BUY AD9754: 14-Bit, 125 MSPS High Performance TxDAC D/A Visit the product page to see pricing options. Converter Data Sheet TECHNICAL SUPPORT TOOLS AND SIMULATIONS Submit a technical question or find your regional support AD9754 IBIS Models number. DOCUMENT FEEDBACK Submit feedback for this data sheet. This page is dynamically generated by Analog Devices, Inc., and inserted into this data sheet. A dynamic change to the content on this page will not trigger a change to either the revision number or the content of the product data sheet. This dynamic page may be frequently modified.