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DAC124S085CIMMX Scheda tecnica(PDF) 1 Page - National Semiconductor (TI) |
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DAC124S085CIMMX Scheda tecnica(HTML) 1 Page - National Semiconductor (TI) |
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1 / 18 page  DAC124S085 12-Bit Micro Power QUAD Digital-to-Analog Converter with Rail-to-Rail Output General Description The DAC124S085 is a full-featured, general purpose QUAD 12-bit voltage-output digital-to-analog converter (DAC) that can operate from a single +2.7V to 5.5V supply and uses 360 µA at 3V and 480 µA at 5V. The DAC124S085 is packaged in a 10-lead MSOP package. The on-chip output amplifier allows rail-to-rail output swing and the three wire serial interface operates at clock rates up to 40 MHz over the entire supply voltage range. Competitive devices are limited to 25 MHz clock rates at supply voltages in the 2.7V to 3.6V range. The serial interface is compatible with standard SPI™, QSPI, MICROWIRE and DSP interfaces. The reference for the DAC124S085 serves all four channels and can vary in voltage between 1V and V A, providing the widest possible output dynamic range. The DAC124S085 has a 16-bit input shift register that controls the outputs to be updated, the mode of operation, the powerdown condition, and the binary input data. All four outputs can be updated simultaneously or individually depending on the setting of the two mode of operation bits. A power-on reset circuit ensures that the DAC output powers up to zero volts and remains there until there is a valid write to the device. A power-down feature reduces power con- sumption to less than a microWatt with three different termi- nation options. The low power consumption and small packages of the DAC124S085 make it an excellent choice for use in battery operated equipment. The DAC124S085 is one of a family of pin compatible DACs, including the 8-bit DAC084S085 and the 10-bit DAC104S085. The DAC124S085 operates over the ex- tended industrial temperature range of −40˚C to +105˚C. Features n Guaranteed Monotonicity n Low Power Operation n Rail-to-Rail Voltage Output n Power-on Reset to 0V n Simultaneous Output Updating n Wide power supply range (+2.7V to +5.5V) n Power Down Modes Key Specifications n Resolution 12 bits n INL ±8 LSB (max) n DNL +0.7 / −0.5 LSB (max) n Settling Time 8.5 µs (max) n Zero Code Error +15 mV (max) n Full-Scale Error −0.75 %FS (max) n Supply Current — Normal 485 µA (3.6V) / 650 µA (5.5V) max — Pwr Down 20 nA (3.6V) / 30 nA (5.5V) typ Applications n Battery-Powered Instruments n Digital Gain and Offset Adjustment n Programmable Voltage & Current Sources n Programmable Attenuators Pin Configuration 20173202 SPI™ is a trademark of Motorola, Inc. June 2006 © 2006 National Semiconductor Corporation DS201732 www.national.com |
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