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AD5449YRU-REEL Datasheet(PDF) 1 Page - Analog Devices |
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AD5449YRU-REEL Datasheet(HTML) 1 Page - Analog Devices |
1 / 28 page Dual 8-/10-/12-Bit, High Bandwidth, Multiplying DACs with Serial Interface Data Sheet AD5429/AD5439/AD5449 Rev. E Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 ©2004–2013 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com FEATURES 10 MHz multiplying bandwidth INL of ±0.25 LSB @ 8 bits 16-lead TSSOP package 2.5 V to 5.5 V supply operation ±10 V reference input 50 MHz serial interface 2.47 MSPS update rate Extended temperature range: −40°C to +125°C 4-quadrant multiplication Power-on reset 0.5 µA typical current consumption Guaranteed monotonic Daisy-chain mode Readback function 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 AD5429/AD5439/AD54491 are CMOS, 8-, 10-, and 12-bit, dual-channel, current output digital-to-analog converters (DAC), respectively. These devices operate from a 2.5 V to 5.5 V power supply, making them suited to battery-powered and other applications. As a result of being manufactured on a CMOS submicron process, these parts offer excellent 4-quadrant multiplication character- istics, with large signal multiplying bandwidths of 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 current-to-voltage precision amplifier. These DACs use a double-buffered, 3-wire serial interface that is compatible with SPI, QSPI™, MICROWIRE™, and most DSP interface standards. In addition, a serial data out (SDO) pin allows daisy-chaining when multiple packages are used. Data readback allows the user to read the contents of the DAC register via the SDO pin. On power-up, the internal shift register and latches are filled with 0s, and the DAC outputs are at zero scale. The AD5429/AD5439/AD5449 DACs are available in 16-lead TSSOP packages. The EV-AD5415/49SDZ evaluation board is available for evaluating DAC performance. For more information, see the UG-297 evaluation board user guide. FUNCTIONAL BLOCK DIAGRAM SYNC AD5429/AD5439/AD5449 VREFB VREFA SCLK SDIN IOUT1B IOUT1A 8-/10-/12-BIT R-2R DAC A 8-/10-/12-BIT R-2R DAC B RFBA POWER-ON RESET DAC REGISTER DAC REGISTER RFB R RFB R IOUT2A IOUT2B LDAC VDD CLR RFBB INPUT REGISTER INPUT REGISTER SHIFT REGISTER LDAC SDO Figure 1. 1 U.S. Patent Number 5,689,257. |
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