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AD5422 Scheda tecnica(PDF) 1 Page - Analog Devices

Il numero della parte AD5422
Spiegazioni elettronici  Single Channel, 16-Bit, Serial Input, Current Source DAC
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Produttore elettronici  AD [Analog Devices]
Homepage  http://www.analog.com
Logo AD - Analog Devices

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Single Channel, 16-Bit, Serial Input,
Current Source DAC
Preliminary Technical Data
AD5420
Rev. PrD
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
©2007 Analog Devices, Inc. All rights reserved.
FEATURES
16-Bit Resolution and Monotonicity
Current Output Ranges: 4–20mA, 0–20mA or 0–24mA
0.1% typ Total Unadjusted Error (TUE)
5ppm/°C Output Drift
Flexible Serial Digital Interface
On-Chip Output Fault Detection
On-Chip Reference (10 ppm/°C Max)
Asynchronous CLEAR Function
Power Supply (AVDD) Range
10.8V to 60 V; AD5420BCPZ
10.8V to 40V; AD5420BREZ
Output Loop Compliance to AVDD – 2.5 V
Temperature Range: -40°C to +85°C
TSSOP and LFCSP Packages
APPLICATIONS
Process Control
Actuator Control
PLC
GENERAL DESCRIPTION
The AD5420 is a low-cost, precision, fully integrated 16-bit
converter offering a programmable current source output
designed to meet the requirements of industrial process control
applications.
The output current range is programmable to 4mA to 20 mA,
0mA to 20mA or an over range function of 0mA to 24mA.
The output is open circuit protected and can drive inductive
loads of 1H. The device is specified to operate with a power
supply range from 10.8 V to 40V (AD5420BREZ) or 10.8V to
60V (AD5420BCPZ). Output loop compliance is 0 V to AVDD
– 2.5 V.
The flexible serial interface is SPI and MICROWIRE
compatible and can be operated in 3-wire mode to minimize the
digital isolation required in isolated applications.
The device also includes a power-on-reset function ensuring
that the device powers up in a known state and an
asynchronous CLEAR pin which sets the output to the low end
of the selected current range.
The total output error is typically
±0.1% FSR.
Table 1. Related Devices
Part Number
Description
AD5422
Single Channel, 16-Bit, Serial
Input Current Source and
Voltage Output DAC
AD5412
Single Channel, 12-Bit, Serial
Input Current Source and
Voltage Output DAC
AD5410
Single Channel, 12-Bit, Serial
Input Current Source DAC


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