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DAC902E 数据表(PDF) 1 Page - Texas Instruments |
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DAC902E 数据表(HTML) 1 Page - Texas Instruments |
1 / 24 page DAC902 DAC90 2 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 CON- TROL 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 DACs 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 opti- mized 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 communication 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 reference and edge-triggered input latches, offering a complete converter solution. Both +3V and +5V CMOS logic families can be inter- faced to the DAC902. The reference structure of the DAC902 allows for additional flexibility by utilizing the on-chip reference, or applying an exter- nal reference. The full-scale output current can be adjusted over a span of 2mA to 20mA, with one external resistor, while maintain- ing the specified dynamic performance. The DAC902 is available in the SO-28 and TSSOP-28 packages. 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 DAC902 SBAS094B – MAY 2002 www.ti.com Copyright © 2002, Texas Instruments Incorporated Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. TM PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
类似零件编号 - DAC902E |
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类似说明 - DAC902E |
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