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DAC7553 Fiches technique(PDF) 1 Page - Texas Instruments |
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DAC7553 Fiches technique(HTML) 1 Page - Texas Instruments |
1 / 20 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 DAC7553 DAC7553 SLAS477 – AUGUST 2005 12-BIT, DUAL, ULTRALOW GLITCH, VOLTAGE OUTPUT DIGITAL-TO-ANALOG CONVERTER • 2.7-V to 5.5-V Single Supply The DAC7553 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 DAC7553 operates from a single 2.7-V to 5.5-V supply. The DAC7553 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 Midscale The 3-wire serial interface operates at clock rates up • 2s Complement Input Data Format to 50 MHz and is compatible with SPI, QSPI, Microwire™, and DSP interface standards. The out- • SPI-Compatible Serial Interface: Up to 50 MHz puts of all DACs may be updated simultaneously or • Daisy-Chain Capability sequentially. The parts incorporate a power-on-reset • Asynchronous Hardware Clear circuit to ensure that the DAC outputs power up at midscale and remain there until a valid write cycle to • Simultaneous or Sequential Update the device takes place. The parts contain a • Specified Temperature Range: –40°C to 105°C power-down feature that reduces the current con- • Small 3-mm × 3-mm, 16-Lead QFN Package sumption of the device to under 2 µA. The small size and low-power operation makes the DAC7553 ideally suited for battery-operated portable • Portable Battery-Powered Instruments applications. The power consumption is typically • Digital Gain and Offset Adjustment 1.5 mW at 5 V, 0.75 mW at 3 V, and reduces to 1 µW in power-down mode. • Programmable Voltage and Current Sources • Programmable Attenuators The DAC7553 is available in a 16-lead QFN package and is specified over –40°C to 105°C. • Industrial Process Control 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 Corp.. PRODUCT PREVIEW information concerns products in the forma- Copyright © 2005, Texas Instruments Incorporated tive or design phase of development. Characteristic data and other specifications are design goals. Texas Instruments reserves the right to change or discontinue these products without notice. |
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Description similaire - DAC7553 |
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