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AD5755-1 fiches techniques PDF

Analog Devices - 4mA to 20mA and Voltage Output DAC

Numéro de référence AD5755-1
Description 4mA to 20mA and Voltage Output DAC
Fabricant Analog Devices 
Logo Analog Devices 





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AD5755-1 fiche technique
Data Sheet
Quad Channel, 16-Bit, Serial Input,
4 mA to 20 mA and Voltage Output DAC,
Dynamic Power Control, HART Connectivity
AD5755-1
FEATURES
16-bit resolution and monotonicity
Dynamic power control for thermal management
Current and voltage output pins connectable to a single
terminal
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
Voltage output ranges (with 20% overrange): 0 V to 5 V, 0 V
to 10 V, ±5 V, and ±10 V
±0.04% 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
Programmable logic controllers (PLCs)
HART network connectivity
GENERAL DESCRIPTION
The AD5755-1 is a quad, voltage and current output DAC that
operates with a power supply range from −26.4 V to +33 V. On-
chip dynamic power control minimizes package power dissipation
in current mode. This is achieved by regulating 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 AD5755-1.
The device 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, AD5757
HART Modem: AD5700, AD5700-1
External References: ADR445, ADR02
Digital Isolators: ADuM1410, ADuM1411
Power: ADP2302, ADP2303
Additional companion products on the AD5755-1 product page
AVSS
AVDD
–15V/0V AGND +15V
FUNCTIONAL BLOCK DIAGRAM
AVCC
5.0V
SWx
VBOOST_x
DVDD
DGND
LDAC
SCLK
SDIN
SYNC
SDO
CLEAR
FAULT
ALERT
AD1
AD0
REFOUT
REFIN
DIGITAL
INTERFACE
REFERENCE
AD5755-1
+
GAIN REG A
OFFSET REG A
DAC CHANNEL A
DAC CHANNEL B
DAC CHANNEL C
DAC CHANNEL D
DC-TO-DC
CONVERTER
7.4V TO 29.5V
DAC A
CURRENT AND
VOLTAGE
OUTPUT RANGE
SCALING
IOUT_x
RSET_x
CHARTx
+VSENSE_x
VOUT _x
NOTES
1. x = A, B, C, AND D.
Figure 1.
Rev. F
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or 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 ©2011–2014 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com

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