Datasheet AD9731 (Analog Devices)

a
10-Bit, 170 MSPS D/A Converter AD9731 FEATURES FUNCTIONAL BLOCK DIAGRAM 170 MSPS Update Rate TTL/High Speed CMOS-Compatible Inputs ANALOG Wideband SFDR: 66 dB @ 2 MHz/50 dB @ 65 MHz D9 RETURN D8 Pin-Compatible, Lower Cost Replacement for D7 Industry Standard AD9721 DAC D6 TTL DECODERS IOUT D5 Low Power: 439 mW @ 170 MSPS SWITCH D4 DRIVE AND REGISTER LOGIC DRIVERS NETWORK IOUT Fast Settling: 3.8 ns to 1/2 LSB D3 D2 Internal Reference D1 Two Package Styles: 28-Lead SOIC and SSOP D0 REF IN APPLICATIONS CLOCK CONTROL Digital Communications OBSOLETE AMP Direct Digital Synthesis INTERNAL VOLTAGE AMP OUT Waveform Reconstruction REFERENCE High Speed Imaging R 5 MHz to 65 MHz HFC Upstream Path SET DIGITAL DIGITAL ANALOG REF OUT CONTROL –VS +VS –VS AMP IN GENERAL DESCRIPTION
The AD9731 is a 10-bit, 170 MSPS, bipolar D/A converter that is Optimized for direct digital synthesis (DDS) waveform recon- optimized to provide high dynamic performance, yet offer lower struction, the AD9731 provides 50 dB of wideband harmonic power dissipation and more economical pricing than afforded by suppression over a dc-to-65 MHz analog output bandwidth. previous bipolar high performance DAC solutions. The AD9731 This signal bandwidth addresses the transmit spectrum in many was designed primarily for demanding communications systems of the emerging digital communications applications where applications where wideband spurious-free dynamic range (SFDR) signal purity is critical. Narrowband, the AD9731 provides an requirements are strenuous and could previously only be met by SFDR of greater than 79 dB. This excellent wideband and using a high performance DAC such as the industry-standard narrowband ac performance, coupled with a lower pricing structure, AD9721. The proliferation of digital communications into base make the AD9731 the optimum high performance DAC value. station and high volume subscriber-end markets has created a The AD9731 is packaged in 28-lead SOIC (same footprint demand for excellent DAC performance delivered at reduced as the industry-standard AD9721) and super space-saving levels of power dissipation and cost. The AD9731 is the answer 28-lead SSOP; both are specified to operate over the extended to that demand. industrial temperature range of –40∞C to +85∞C. REV. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. No license is granted by implication or otherwise
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Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS EXPLANATION OF TEST LEVELS ORDERING GUIDE PIN FUNCTION DESCRIPTIONS PIN CONFIGURATION Typical Performance Characteristics THEORY AND APPLICATIONS Digital Inputs/Timing Input Clock and Data Timing Relationship References Analog Output EVALUATION BOARD OUTLINE DIMENSIONS Revision History