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AD5757 Datasheet(PDF) 1 Page - Analog Devices |
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AD5757 Datasheet(HTML) 1 Page - Analog Devices |
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1 / 44 page  Quad Channel, 16-Bit, Serial Input, 4 mA to 20 mA Output DAC, Dynamic Power Control, HART Connectivity AD5757 Rev. A Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other 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 www.analog.com Fax: 781.461.3113 ©2011 Analog Devices, Inc. All rights reserved. FEATURES 16-bit resolution and monotonicity Dynamic power control for thermal management or external PMOS mode Current output ranges: 0 mA to 20 mA, 4 mA to 20 mA, or 0 mA to 24 mA ±0.05% total unadjusted error (TUE) maximum User programmable offset and gain On-chip diagnostics On-chip reference (±10 ppm/°C maximum) −40°C to +105°C temperature range APPLICATIONS Process control Actuator control PLCs HART network connectivity GENERAL DESCRIPTION The AD5757 is a quad, current output DAC that operates with a power supply range from 10.8 V to 33 V. On-chip dynamic power control minimizes package power dissipation by regulat- ing the voltage on the output driver from 7.4 V to 29.5 V using a dc-to-dc boost converter optimized for minimum on-chip power dissipation. Each channel has a corresponding CHART pin so that HART signals can be coupled onto the current output of the AD5757. The part uses a versatile 3-wire serial interface that operates at clock rates of up to 30 MHz and is compatible with standard SPI, QSPI™, MICROWIRE™, DSP, and microcontroller interface standards. The interface also features optional CRC-8 packet error checking, as well as a watchdog timer that monitors activity on the interface. PRODUCT HIGHLIGHTS 1. Dynamic power control for thermal management. 2. 16-bit performance. 3. Multichannel. 4. HART compliant. COMPANION PRODUCTS Product Family: AD5755-1, AD5755 External References: ADR445, ADR02 Digital Isolators: ADuM1410, ADuM1411 Power: ADP2302, ADP2303 Additional companion products on the AD5757 product page FUNCTIONAL BLOCK DIAGRAM AD5757 AGND AVDD +15V AVCC 5.0V DVDD DGND LDAC CLEAR SCLK SDIN SYNC SDO FAULT DC-TO-DC CONVERTER DIGITAL INTERFACE REFERENCE CURRENT AND VOLTAGE OUTPUT RANGE SCALING ALERT REFOUT REFIN NOTES 1. x = A, B, C, AND D. AD1 AD0 DAC A SWx VBOOST_x GAIN REG A OFFSET REG A RSET_x CHARTx IOUT_x DAC CHANNEL B DAC CHANNEL A DAC CHANNEL C DAC CHANNEL D 7.4V TO 29.5V + Figure 1. |
Número de pieza similar - AD5757_11 |
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Descripción similar - AD5757_11 |
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