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AD5445 Folha de dados(PDF) 1 Page - Analog Devices |
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AD5445 Folha de dados(HTML) 1 Page - Analog Devices |
1 / 24 page 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. 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: 781/326-8703 © 2003 Analog Devices, Inc. All rights reserved. AD5424/AD5433/AD5445* 8-/10-/12-Bit, High Bandwidth, Multiplying DACs with Parallel Interface *U.S. Patent No. 5,689,257 FEATURES 2.5 V to 5.5 V Supply Operation Fast Parallel Interface (17 ns Write Cycle) 10 MHz Multiplying Bandwidth 10 V Reference Input Extended Temperature Range –40 C to +125 C 20-Lead TSSOP and Chip Scale (4 mm 4 mm) Packages 8-, 10-, and 12-Bit Current Output DACs Upgrades to AD7524/AD7533/AD7545 Pin Compatible 8-, 10-, and 12-Bit DACs in Chip Scale Guaranteed Monotonic 4-Quadrant Multiplication Power-On Reset with Brownout Detection Readback Function 0.4 A Typical Power Consumption APPLICATIONS Portable Battery-Powered Applications Waveform Generators Analog Processing Instrumentation Applications Programmable Amplifiers and Attenuators Digitally-Controlled Calibration Programmable Filters and Oscillators Composite Video Ultrasound Gain, Offset, and Voltage Trimming GENERAL DESCRIPTION The AD5424/AD5433/AD5445 are CMOS 8-, 10-, and 12-bit current output digital-to-analog converters (DACs), respectively. These devices operate from a 2.5 V to 5.5 V power supply, making them suited to battery-powered applications and many other applications. These DACs utilize data readback allowing the user to read the contents of the DAC register via the DB pins. On power-up, the internal register and latches are filled with 0s and the DAC outputs are at zero scale. As a result of manufacture on a CMOS submicron process, they offer excellent 4-quadrant multiplication characteristics, with large signal multiplying bandwidths of up to 10 MHz. The applied external reference input voltage (VREF) determines the full-scale output current. An integrated feedback resistor (RFB) provides temperature tracking and full-scale voltage output when combined with an external I-to-V precision amplifier. While these devices are upgrades of AD7524/AD7533/AD7545 in multiplying bandwidth performance, they have a latched interface and cannot be used in transparent mode. The AD5424 is available in small 20-lead LFCSP and 16-lead TSSOP packages, while the AD5433/AD5445 DACs are avail- able in small 20-lead LFCSP and TSSOP packages. FUNCTIONAL BLOCK DIAGRAM R/ W CS AD5424/ AD5433/ AD5445 VREF IOUT2 IOUT1 RFB R 8-/10-/12-BIT R-2R DAC DAC REGISTER INPUT LATCH VDD POWER-ON RESET DB0 DB7/DB9/DB11 DATA INPUTS GND |
Nº de peça semelhante - AD5445 |
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Descrição semelhante - AD5445 |
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