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Analog Devices - Quad Channel 16-Bit Serial Input - 4-20mA Output DAC Dynamic Power Control : HART Connectivity

Numéro de référence AD5757
Description Quad Channel 16-Bit Serial Input - 4-20mA Output DAC Dynamic Power Control : HART Connectivity
Fabricant Analog Devices 
Logo Analog Devices 





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AD5757 fiche technique
Preliminary Technical Data
FEATURES
16/12-Bit Resolution and Monotonicity
Dynamic Power Control for Thermal Management
IOUT Range: 0mA-20mA, 4mA–20mA or 0mA–24mA
±0.05% Total Unadjusted Error (TUE) Max
User programmable Offset and Gain
On Chip Diagnostics
On-Chip Reference (±5 ppm/°C Max)
−40°C to +105°C Temperature Range
APPLICATIONS
Process Control
Actuator Control
PLC’s
HART Network Connectivity
PRODUCT HIGHLIGHTS
Dynamic Power Control for Thermal management
16bit performance
Multi-channel
HART Compliant
Quad Cwhwwa.DnantaeShle,et41U6.co-mBit,
Serial Input, 4-20mA Output DAC,
Dynamic Power Control, HART Connectivity
AD5757/AD5737
GENERAL DESCRIPTION
The AD5757/AD5737 is a quad, current output DAC, which
operates with a power supply of up to +33v. On chip dynamic
power control minimizes package power dissipation in current
mode. This is achieved by regulating the voltage on the output
driver from between 7V-30V.
Each channel has a corresponding CHART pin so that HART
signals can be coupled onto the AD5757/AD5737’s current
output.
The part uses a versatile 3-wire serial interface that operates at
clock rates up to 30 MHz and that 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.
Table 1. Complementary Devices
Part No.
Description
ADR445
5V, Ultralow Noise, LDO XFET Voltage
Reference with Current Sink and Source
ADP1871
Synchronous Buck Controller with Constant
On-Time, Valley Current Mode, and Power
Save Mode
Figure 1.
Rev. PrD
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor other
rights of third parties that may result from its use. Specifications subject to change without notice. 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
©2010 Analog Devices, Inc. All rights reserved.

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