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AD5405YCP-REEL7 Folha de dados(PDF) 1 Page - Analog Devices |
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AD5405YCP-REEL7 Folha de dados(HTML) 1 Page - Analog Devices |
1 / 24 page Dual 12-Bit, High Bandwidth, Multiplying DAC with 4-Quadrant Resistors and Parallel Interface AD5405 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: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved. FEATURES On chip 4-quadrant resistors allow flexible output ranges 10 MHz multiplying bandwidth Fast parallel interface write cycle: 58 MSPS 2.5 V to 5.5 V supply operation ±10 V reference input Extended temperature range: −40°C to 125°C 40-lead LFCSP package Guaranteed monotonic 4-quadrant multiplication Power-on reset Readback function .5 µA typical current 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 AD54051 is a dual CMOS, 12-bit, current output digital- to-analog converter (DAC).This device operates from a 2.5 V to 5.5 V power supply, making it suited to battery-powered and other applications. 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. This device also contains all the 4-quadrant resistors necessary for bipolar operation and other configuration modes. This DAC utilizes 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 zeros and the DAC outputs are at zero scale. As a result of manufacture with a CMOS submicron process, the device offers excellent 4-quadrant multiplication characteristics, with large signal multiplying bandwidths of up to 10 MHz. The AD5405 has a 6 mm × 6 mm, 40-lead LFCSP package. 1 US Patent Number 5,689,257. VREFA AD5405 VREFB VDD DB0 DB11 DATA INPUTS DAC A/B CS R/W GND CONTROL LOGIC INPUT BUFFER LATCH IOUT1B IOUT1A 12-BIT R-2R DAC A RFBA POWER-ON RESET 12-BIT R-2R DAC B LATCH R1 2R R1A R2 2R R3 2R R3A R2A R2_3A R2 2R R3 2R R3B R2B R2_3B RFB 2R R1 2R RFB 2R R1B IOUT2A IOUT2B LDAC RFB B Figure 1. AD5405 Functional Block Diagram |
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