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DAC902 Scheda tecnica(PDF) 1 Page - Burr-Brown (TI) |
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DAC902 Scheda tecnica(HTML) 1 Page - Burr-Brown (TI) |
1 / 16 page ® DAC902 ©1999 Burr-Brown Corporation PDS-1447B Printed in U.S.A. May, 2000 International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132 DAC902 DAC902 For most current data sheet and other product information, visit www.burr-brown.com 12-Bit, 165MSPS DIGITAL-TO-ANALOG CONVERTER FEATURES q SINGLE +5V OR +3V OPERATION q HIGH SFDR: 5MHz Output at 100MSPS: 67dBc q LOW GLITCH: 3pV-s q LOW POWER: 170mW at +5V q INTERNAL REFERENCE: Optional Ext. Reference Adjustable Full-Scale Range Multiplying Option APPLICATIONS q COMMUNICATION TRANSMIT CHANNELS: WLL, Cellular Base Station Digital Microwave Links Cable Modems q WAVEFORM GENERATION: Direct Digital Synthesis (DDS) Arbitrary Waveform Generation (ARB) q MEDICAL/ULTRASOUND q HIGH-SPEED INSTRUMENTATION AND CONTROL q VIDEO, DIGITAL TV DESCRIPTION The DAC902 is a high-speed, digital-to-analog converter (DAC) offering a 12-bit resolution option within the SpeedPlus Family of high-performance converters. Featuring pin compatibility among family members, the DAC908, DAC900, and DAC904 provide a component selection option to an 8-, 10-, and 14-bit resolution, respectively. All models within this family of D/A converters support update rates in excess of 165MSPS with excellent dynamic performance, and are especially suited to fulfill the demands of a variety of applications. The advanced segmentation architecture of the DAC902 is optimized to provide a high Spurious-Free Dynamic Range (SFDR) for single-tone, as well as for multi-tone signals— essential when used for the transmit signal path of communica- tion systems. The DAC902 has a high impedance (200k Ω) current output with a nominal range of 20mA and an output compliance of up to 1.25V. The differential outputs allow for both a differential, or single-ended analog signal interface. The close matching of the current outputs ensures superior dynamic performance in the differential configuration, which can be implemented with a transformer. Utilizing a small geometry CMOS process, the monolithic DAC902 can be operated on a wide, single-supply range of +2.7V to +5.5V. Its low power consumption allows for use in portable and battery operated systems. Further optimization can be realized by lowering the output current with the adjustable full-scale option. For noncontinuous operation of the DAC902, a power-down mode results in only 45mW of standby power. The DAC902 comes with an integrated 1.24V bandgap refer- ence and edge-triggered input latches, offering a complete converter solution. Both +3V and +5V CMOS logic families can be interfaced to the DAC902. The reference structure of the DAC902 allows for additional flexibility by utilizing the on-chip reference, or applying an external reference. The full-scale output current can be adjusted over a span of 2mA to 20mA, with one external resistor, while maintaining the specified dynamic performance. The DAC902 is available in the SO-28 and TSSOP-28 pack- ages. TM Current Sources LSB Switches Segmented Switches +1.24V Ref. Latches 12-Bit Data Input D11...D0 DAC902 FSA BW +VD +VA AGND CLK DGND REFIN INT/EXT IOUT IOUT BYP PD |
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