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MAX5722 Fiches technique(PDF) 1 Page - Maxim Integrated Products |
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MAX5722 Fiches technique(HTML) 1 Page - Maxim Integrated Products |
1 / 14 page General Description The MAX5722 dual,12-bit, low-power, buffered voltage- output, digital-to-analog converter (DAC) is packaged in a space-saving 8-pin µMAX package (5mm ✕ 3mm). The wide supply voltage range of +2.7V to +5.5V and 112µA supply current accommodates low-power and low-voltage applications. DAC outputs employ on-chip precision output amplifiers that swing Rail-to-Rail®. The MAX5722’s reference input accepts a voltage range from 0 to VDD. In power-down, the reference input is high impedance, further reducing the system’s total power consumption. The 20MHz, 3-wire SPI™, QSPI™, MICROWIRE™, and DSP-compatible serial interface save board space and reduce the complexity of opto- and transformer-isolated applications. The MAX5722 on-chip power-on reset (POR) circuit resets the DAC outputs to zero and loads the output with a 100k Ω resistor to ground. This pro- vides additional safety for applications that drive valves or other transducers that need to be off on power-up. The MAX5722’s software-controlled power-down reduces supply current to less than 0.3µA and provides software-selectable output loads (1k Ω, 100kΩ, or high impedance) while in power-down. The MAX5722 is specified over the -40°C to +125°C automotive temper- ature range. Applications Automatic Tuning Gain and Offset Adjustment Power Amplifier Control Process Control I/O Boards Battery-Powered Instruments VCO Control Features o Ultra-Low Power Consumption 112µA at VDD = +3.6V 135µA at VDD = +5.5V o Wide +2.7V to +5.5V Single-Supply Range o 8-Pin µMAX Package o 0.3µA Power-Down Current o Guaranteed 12-Bit Monotonicity (±1LSB DNL) o Safe Power-Up Reset to Zero Volts at DAC Output o Three Software-Selectable Power-Down Impedances (100k Ω, 1kΩ, Hi-Z) o Fast 20MHz, 3-Wire SPI, QSPI, and MICROWIRE- Compatible Serial Interface o Rail-to-Rail Output Buffer Amplifiers o Schmitt-Triggered Logic Inputs for Direct Interfacing to Optocouplers o Wide -40°C to +125°C Operating Temperature Range 12-Bit, Low-Power, Dual, Voltage-Output DAC with Serial Interface ________________________________________________________________ Maxim Integrated Products 1 REF DIN SCLK 1 2 8 7 OUTB OUTA GND VDD µMAX TOP VIEW 3 4 6 5 MAX5722 CS Pin Configuration 19-2124; Rev 2; 7/03 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Rail-to-Rail is a registered trademark of Nippon Motorola, Inc. SPI and QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor, Corp. Ordering Information PART TEMP RANGE PIN-PACKAGE MAX5722EUA -40°C to +85°C 8 µMAX MAX5722AUA -40°C to +125°C 8 µMAX Functional Diagram appears at end of data sheet. |
Numéro de pièce similaire - MAX5722 |
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Description similaire - MAX5722 |
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