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AD5664BRMZ

製品説明
仕様・特性

2.7 V to 5.5 V, 450 μA, Rail-to-Rail Output, Quad, 12-/16-Bit nanoDACs® AD5624/AD5664 FEATURES FUNCTIONAL BLOCK DIAGRAM VDD AD5624/AD5664 INPUT REGISTER DAC REGISTER STRING DAC A BUFFER VOUTA INPUT REGISTER DAC REGISTER STRING DAC B BUFFER VOUTB INPUT REGISTER DAC REGISTER STRING DAC C BUFFER VOUTC INPUT REGISTER DAC REGISTER STRING DAC D BUFFER VOUTD SCLK SYNC INTERFACE LOGIC DIN POWER-ON RESET APPLICATIONS Process control Data acquisition systems Portable battery-powered instruments Digital gain and offset adjustment Programmable voltage and current sources Programmable attenuators VREF GND POWER-DOWN LOGIC 05943-001 Low power, quad nanoDACs AD5664: 16 bits AD5624: 12 bits Relative accuracy: ±12 LSBs max Guaranteed monotonic by design 10-lead MSOP and 3 mm × 3 mm LFCSP_WD 2.7 V to 5.5 V power supply Power-on reset to zero Per channel power-down Serial interface, up to 50 MHz Figure 1. Table 1. Related Devices Part No. AD5624R/AD5644R/AD5664R Description 2.7 V to 5.5 V quad, 12-, 14-, 16-bit DACs with internal reference GENERAL DESCRIPTION The AD5624/AD5664, members of the nanoDAC family, are low power, quad, 12-, 16-bit buffered voltage-out DACs that operate from a single 2.7 V to 5.5 V supply and are guaranteed monotonic by design. The AD5624/AD5664 use a versatile 3-wire serial interface that operates at clock rates up to 50 MHz, and are compatible with standard SPI®, QSPI™, MICROWIRE™, and DSP interface standards. The AD5624/AD5664 require an external reference voltage to set the output range of the DAC. The part incorporates a poweron reset circuit that ensures the DAC output powers up to 0 V and remains there until a valid write takes place. The parts contain a power-down feature that reduces the current consumption of the device to 480 nA at 5 V and provides software-selectable output loads while in power-down mode. PRODUCT HIGHLIGHTS The low power consumption of these parts in normal operation makes them ideally suited to portable battery-operated equipment. The power consumption is 2.25 mW at 5 V, going down to 2.4 μW in power-down mode. 1. Relative accuracy: ±12 LSBs maximum. 2. Available in 10-lead MSOP and 10-lead, 3 mm × 3 mm, LFCSP_WD. 3. Low power, typically consumes 1.32 mW at 3 V and 2.25 mW at 5 V. 4. Maximum settling time of 4.5 μs (AD5624) and 7 μs (AD5664). The AD5624/AD5664 on-chip precision output amplifier allows rail-to-rail output swing to be achieved. Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2006 Analog Devices, Inc. All rights reserved.

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