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DAC7821IPW Fiches technique(PDF) 1 Page - Texas Instruments |
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DAC7821IPW Fiches technique(HTML) 1 Page - Texas Instruments |
1 / 18 page DAC7821 www.ti.com FEATURES DESCRIPTION APPLICATIONS DAC Register Power-On Reset Control Logic DAC7821 R R FB V REF V DD I 1 OUT I 2 OUT GND DB0 DB11 12-Bit R-2R DAC Input Latch Parallel Bus CS R/W DAC7821 SBAS365A – OCTOBER 2005 – REVISED FEBRUARY 2006 12-Bit, Parallel Input, Multiplying Digital-to-Analog Converter • 2.5 V to 5.5 V Supply Operation The DAC7821 is a CMOS 12-bit current output digital-to-analog converter (DAC). This device • Fast Parallel Interface: operates from a single 2.5 V to 5.5 V power supply, 17ns Write Cycle making it suitable to battery-powered and many other • Update Rate of 20.4 MSPS applications. • 10 MHz Multiplying Bandwidth This DAC operates with a fast parallel interface. Data • ±10 V Reference Input readback allows the user to read the contents of the • Low Glitch Energy: 5 nV-s DAC register via the DB pins. On power-up, the internal register and latches are filled with zeroes and • Extended Temperature Range: the DAC outputs are at zero scale. –40 °C to +125°C The DAC7821 offers excellent 4-quadrant • 20-Lead QFN and 20-Lead TSSOP Packages multiplication characteristics, with large signal • 12-Bit Monotonic multiplying bandwidth of 10 MHz. The applied • ±1 LSB INL external reference input voltage (VREF) determines • 4-Quadrant Multiplication the full-scale output current. An integrated feedback resistor (RFB) provides temperature tracking and • Power-On Reset with Brownout Detection full-scale voltage output when combined with an • Readback Function external current-to-voltage precision amplifier. • Industry-Standard Pin Configuration The DAC7821 is available in a 20-lead TSSOP package as well as a small 20-lead QFN package (available Q2 2006). • Portable Battery-Powered Instruments • Waveform Generators • Analog Processing • Programmable Amplifiers and Attenuators • Digitally-Controlled Calibration • Programmable Filters and Oscillators • Composite Video • Ultrasound 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. All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2005–2006, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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