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DAC7558IRHBR Fiches technique(PDF) 1 Page - Texas Instruments |
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DAC7558IRHBR Fiches technique(HTML) 1 Page - Texas Instruments |
1 / 25 page www.ti.com FEATURES DESCRIPTION APPLICATIONS Input Register Input Register DAC Register DAC Register String DAC A String DAC H Interface Logic Power-On Reset Power-Down Logic + IOVDD VREF2 SCLK SYNC SDIN VOUTA VOUTH SDO RST RSTSEL AGND DGND VREF3 VREF4 PD − VFBA + − VFBH VREF1 VDD DCEN DAC7558 SLAS435 – MAY 2005 12-BIT, OCTAL, ULTRALOW GLITCH, VOLTAGE OUTPUT DIGITAL-TO-ANALOG CONVERTER • 2.7-V to 5.5-V Single Supply The DAC7558 is a 12-bit, octal-channel, voltage 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 DAC7558 operates from a single 2.7-V to 5.5-V supply. The DAC7558 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: 1.8 mA (Max) the output range is set using an external voltage • Per-Channel Power Down: 2 µA (Max) reference. • Power-On Reset to Zero Scale and Mid 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- • Simultaneous or Sequential Update puts of all DACs may be updated simultaneously or • Asynchronous Clear sequentially. The parts incorporate a power-on-reset • Binary and Twos-Complement Capability circuit to ensure that the DAC outputs power up to zero volts and remain there until a valid write cycle to • Daisy-Chain Operation the device takes place. The parts contain a • 1.8-V to 5.5-V Logic Compatibility power-down feature that reduces the current con- • Specified Temperature Range: –40°C to 105°C sumption of the device to under 2 µA. • Small, 5-mm x 5-mm, 32-Lead QFN Package The small size and low-power operation makes the DAC7558 ideally suited for battery-operated portable applications. The power consumption is typically 7.5 mW at 5 V, 3.7 mW at 3 V, and reduces to 1 µW in • Portable Battery-Powered Instruments power-down mode. • Digital Gain and Offset Adjustment • Programmable Voltage and Current Sources The DAC7558 is available in a 32-lead QFN package and is specified over –40°C to 105°C. • Programmable Attenuators • Industrial Process Control FUNCTIONAL BLOCK DIAGRAM 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.. 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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