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AD8021 データシート(PDF) 1 Page - Analog Devices |
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AD8021 データシート(HTML) 1 Page - Analog Devices |
1 / 28 page 12-/14-Bit High Bandwidth Multiplying DACs with Serial Interface Data Sheet AD5444/AD5446 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 12 MHz multiplying bandwidth INL of ± 0.5 LSB at 12 bits Pin-compatible 12-/14-bit current output DAC 2.5 V to 5.5 V supply operation 10-lead MSOP package ±10 V reference input 50 MHz serial interface 2.7 MSPS update rate Extended temperature range: −40°C to +125°C 4-quadrant multiplication Power-on reset with brownout detection 0.4 µA typical current consumption Guaranteed monotonic 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 Automotive radar GENERAL DESCRIPTION The AD5444/AD54461 are CMOS 12-bit and 14-bit, current output, digital-to-analog converters (DACs). Operating from a single 2.5 V to 5.5 V power supply, these devices are suited for battery-powered and other applications. As a result of the CMOS submicron manufacturing process, these parts offer excellent 4-quadrant multiplication char- acteristics of up to 12 MHz. These DACs use a double-buffered, 3-wire serial interface that is compatible with SPI®, QSPI™, MICROWIRE™, and most DSP interface standards. On power-up, the internal shift register and latches are filled with 0s, and the DAC output is at zero scale. The applied external reference input voltage (VREF) determines the full-scale output current. These parts can handle ±10 V inputs on the reference, despite operating from a single-supply power supply of 2.5 V to 5.5 V. An integrated feedback resistor (RFB) provides temperature tracking and full-scale voltage output when combined with an external current-to-voltage precision amplifier. The AD5444/AD5446 DACs are available in small 10-lead MSOP packages, which are pin-compatible with the AD5425/AD5426/AD5432/AD5443 family of DACs. The EV-AD5443/46/53SDZ board is available for evaluating DAC performance. For more information, see the UG-327 evaluation board user guide. 1 US Patent Number 5,689,257. FUNCTIONAL BLOCK DIAGRAM POWER-ON RESET GND VREF RFB IOUT1 IOUT2 R SDO CONTROL LOGIC AND INPUT SHIFT REGISTER DAC REGISTER 12-BIT R-2R DAC INPUT LATCH SCLK SDIN SYNC VDD AD5444/ AD5446 Figure 1. |
同様の部品番号 - AD8021 |
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同様の説明 - AD8021 |
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