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DAC7552 Folha de dados(PDF) 1 Page - Texas Instruments |
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DAC7552 Folha de dados(HTML) 1 Page - Texas Instruments |
1 / 22 page 3 mm x 3 mm Actual Size www.ti.com FEATURES DESCRIPTION APPLICATIONS _ + Interface Logic Input Register DAC Register String DAC A Power-Down Logic Power-On Reset VDD IOVDD VREFA VFBA VOUT A VREFB GND CLR DCEN SDIN SYNC SCLK _ + Input Register DAC Register String DAC B VFBB VOUT B PD SDO FUNCTIONAL BLOCK DIAGRAM DAC7552 DAC7552 SLAS442B – JANUARY 2005 – REVISED JUNE 2005 12-BIT, DUAL, ULTRALOW GLITCH, VOLTAGE OUTPUT DIGITAL-TO-ANALOG CONVERTER • 2.7-V to 5.5-V Single Supply The DAC7552 is a 12-bit, dual-channel, volt- age-output DAC with exceptional linearity and • 12-Bit Linearity and Monotonicity monotonicity. Its proprietary architecture minimizes • Rail-to-Rail Voltage Output undesired transients such as code-to-code glitch and • Settling Time: 5 µs (Max) channel-to-channel crosstalk. The low-power • Ultralow Glitch Energy: 0.1 nVs DAC7552 operates from a single 2.7-V to 5.5-V supply. The DAC7552 output amplifiers can drive a • Ultralow Crosstalk: –100 dB 2-k Ω, 200-pF load rail-to-rail with 5-µs settling time; • Low Power: 440 µA (Max) the output range is set using an external voltage • Per-Channel Power Down: 2 µA (Max) reference. • Power-On Reset to Zero Scale The 3-wire serial interface operates at clock rates up • SPI-Compatible Serial Interface: Up to 50 MHz to 50 MHz and is compatible with SPI, QSPI, Microwire™, and DSP interface standards. The out- • Daisy-Chain Capability puts of all DACs may be updated simultaneously or • Asynchronous Hardware Clear sequentially. The parts incorporate a power-on-reset • Simultaneous or Sequential Update circuit to ensure that the DAC outputs power up to zero volts and remain there until a valid write cycle to • Specified Temperature Range: –40°C to 105°C the device takes place. The parts contain a • Small 3-mm × 3-mm, 16-Lead QFN Package power-down feature that reduces the current con- sumption of the device to under 2 µA. The small size and low-power operation makes the • Portable Battery-Powered Instruments DAC7552 ideally suited for battery-operated portable • Digital Gain and Offset Adjustment applications. The power consumption is typically • Programmable Voltage and Current Sources 1.5 mW at 5 V, 0.75 mW at 3 V, and reduces to 1 µW in power-down mode. • Programmable Attenuators • Industrial Process Control The DAC7552 is available in a 16-lead QFN package and is specified over –40°C to 105°C. 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. Microwire is a trademark of National Semiconductor Corporation. PRODUCTION DATA information is current as of publication date. Copyright © 2005, 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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