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AD5544ARSZ 数据表(PDF) 1 Page - Analog Devices |
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AD5544ARSZ 数据表(HTML) 1 Page - Analog Devices |
1 / 24 page Quad, Current-Output, Serial-Input 16-/14-Bit DACs Data Sheet AD5544/AD5554 Rev. G 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 ©2000–2013 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com FEATURES AD5544: 16-bit resolution INL of ±1 LSB (B Grade) AD5554: 14-bit resolution INL of ±0.5 LSB (B Grade) 2 mA full-scale current ± 20%, with VREF = ±10 V 0.9 µs settling time to ±0.1% 12 MHz multiplying bandwidth Midscale glitch of −1 nV-sec Midscale or zero-scale reset 4 separate, 4-quadrant multiplying reference inputs SPI-compatible, 3-wire interface Double-buffered registers enable Simultaneous multichannel change Internal power-on reset Temperature range: −40°C to +125°C Compact 28-lead SSOP and 32-lead LFCSP APPLICATIONS Automatic test equipment Instrumentation Digitally controlled calibration FUNCTIONAL BLOCK DIAGRAM INPUT REGISTER R 16 DAC A REGISTER R 2:4 DECODE DAC A B C D POWER-ON RESET D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15 A0 A1 EN VDD RFBA IOUTA AGNDA AGNDF VSS LDAC MSB RS DGND CLK CS SDI SDO VREFA B C RFBB IOUTB AGNDB RFBC IOUTC AGNDC RFBD IOUTD AGNDD AD5544 INPUT REGISTER R INPUT REGISTER R INPUT REGISTER R DAC B REGISTER R DAC C REGISTER R DAC D REGISTER R D DAC A DAC B DAC D DAC C Figure 1. GENERAL DESCRIPTION The AD5544/AD5554 quad, 16-/14-bit, current output, digital- to-analog converters (DACs) are designed to operate from a 2.7 V to 5.5 V supply range. The applied external reference input voltage (VREFx) determines the full-scale output current. Integrated feedback resistors (RFB) provide temperature-tracking, full-scale voltage outputs when combined with an external I-to-V precision amplifier. A double-buffered serial data interface offers high speed, 3-wire, SPI- and microcontroller-compatible inputs using serial data in (SDI), a chip select (CS), and clock (CLK) signals. In addition, a serial data out pin (SDO) allows for daisy-chaining when multiple packages are used. A common, level-sensitive, load DAC strobe (LDAC) input allows the simultaneous update of all DAC outputs from previously loaded input registers. Additionally, an internal power-on reset forces the output voltage to 0 at system turn-on. The MSB pin allows system reset assertion (RS) to force all registers to zero code when MSB = 0 or to half-scale code when MSB = 1. The AD5544 is packaged in the compact 28-lead SSOP and 32- lead LFCSP. The AD5554 is packed in the compact 28-lead SSOP. The EV-AD5544/45SDZ is available for evaluating DAC perfor- mance. For more information, see the UG-285 evaluation board user guide. 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 –0.1 –0.2 0 10,000 30,000 50,000 70,000 CODE 20,000 40,000 60,000 Figure 2. AD5544 INL vs. Code Plot (TA = 25°C) |
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