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AD5749 데이터시트 PDF




Analog Devices에서 제조한 전자 부품 AD5749은 전자 산업 및 응용 분야에서
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부품번호 AD5749 기능
기능 Industrial Current Out Drive
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AD5749 데이터시트, 핀배열, 회로
Data Sheet
Industrial Current Out Driver, Single-Supply,
55 V Maximum Supply, Programmable Ranges
AD5749
FEATURES
Current output ranges: 0 mA to 24 mA or 4 mA to 20 mA
±0.03% FSR typical total unadjusted error (TUE)
±5 ppm/°C typical output drift
2% overrange
Flexible serial digital interface
On-chip output fault detection
PEC error checking
Asynchronous CLEAR function
Power supply range
AVDD: 12 V (± 10%) to 55 V (maximum)
Output loop compliance to AVDD − 2.75 V
Temperature range: −40°C to +105°C
32-lead, 5 mm × 5 mm LFCSP package
APPLICATIONS
Process control
Actuator control
PLCs
GENERAL DESCRIPTION
The AD5749 is a single channel, low cost, precision, current output
driver with hardware or software programmable output ranges.
The software ranges are configured via an SPI-/MICROWIRE™-
compatible serial interface. The AD5749 targets applications in
PLC and industrial process control. The analog input to the
AD5749 is provided from a low voltage, single-supply digital-to-
analog converter (DAC) and is internally conditioned to provide
the desired output current/voltage range.
The output current range is programmable across two current
ranges: 0 mA to 24 mA, or 4 mA to 20 mA. Current output is
open-circuit protected and can drive inductive loads of 0.1 H.
The device is specified to operate with a power supply range
from 10.8 V to 55 V. Output loop compliance is 0 V to AVDD
2.75 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 interface also
features an optional PEC error checking feature using CRC-8
FUNCTIONAL BLOCK DIAGRAM
DVCC GND AVDD GND
CLEAR
CLRSEL
SCLK/OUTEN*
SDIN/R0*
SYNC/RSET*
SDO/VFAULT*
HW SELECT
VIN
INPUT SHIFT
REGISTER
AND
CONTROL
LOGIC
AD5749
AVDD
STATUS
REGISTER
R2
R3
VREF
RESET
IOUT RANGE
SCALING
IOUT
FAULT/TEMP*
NC/IFAULT*
OVERTEMP
IOUT OPEN FAULT
IOUT OPEN FAULT
RSET
POWER-
ON RESET
IOUT
OPEN FAULT
REXT1
REXT2
AD2/R1* AD1/R2* AD0/R3*
*DENOTES SHARED PIN. SOFTWARE MODE DENOTED BY REGULAR TEXT,
HARDWARE MODE DENOTED BY ITALIC TEXT. FOR EXAMPLE, FOR
FAULT/TEMP PIN, IN SOFTWARE MODE, THIS PIN TAKES ON FAULT
FUNCTION. IN HARDWARE MODE, THIS PIN TAKES ON TEMP FUNCTION.
Figure 1.
error checking, useful in industrial environments where data
communication corruption can occur.
The device also includes a power-on reset function ensuring
that the device powers up in a known state and an asynchron-
ous CLEAR pin that sets the outputs to the low end of the
selected current range.
An HW SELECT pin is used to configure the part for hardware
or software mode on power-up.
Table 1. Related Devices
Part No. Description
AD5750
Industrial current/voltage output (I/V) driver with
programmable ranges
AD5751
Industrial I/V output driver, single-supply, 55 V maximum
supply, programmable ranges
AD5748 Industrial I/V output driver with programmable ranges
AD5410/
AD5420
Single-channel, 12-/16-bit, serial input, current source
output DAC
AD5412/
AD5422
Single-channel, 12-/16-bit, serial input, I/V output DAC
Rev. B
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 ©2010–2013 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com




AD5749 pdf, 반도체, 판매, 대치품
Data Sheet
AD5749
SPECIFICATIONS
AVDD = 12 V (± 10%) to 55 V (maximum), DVCC = 2.7 V to 5.5 V, GND = 0 V. RLOAD = 300 Ω. All specifications TMIN to TMAX,
unless otherwise noted.
Table 2.
Parameter1
INPUT VOLTAGE RANGE
Input Leakage Current
REFERENCE INPUT
Reference Input Voltage
Min
−1
Input Leakage Current
CURRENT OUTPUT
Output Current Ranges
Output Current Overranges2
ACCURACY (INTERNAL RSET)
Total Unadjusted Error (TUE)
A Version2
Relative Accuracy (INL)
Offset Error
Offset Error TC2
Dead Band on Output, RTI
Gain Error
Gain TC2
Full-Scale Error
Full-Scale TC2
ACCURACY (EXTERNAL RSET)
Total Unadjusted Error (TUE)
A Version2
Relative Accuracy (INL)
Offset Error
Offset Error TC2
Dead Band on Output, RTI
Gain Error
Gain TC2
Full-Scale Error
Full-Scale TC2
−1
0
4
0
3.92
−0.5
−0.3
−0.02
−16
−10
−0.2
−0.125
−0.2
−0.125
−0.3
−0.1
−0.02
−14
−11
−0.08
−0.07
−0.1
−0.07
Typ
0 to 4.096
Max
+1
4.096
+1
24
20
24.5
20.4
±0.15
±0.01
+5
±3
8
±0.02
±10
±0.02
±4
+0.5
+0.3
+0.02
+16
+10
14
+0.2
+0.125
+0.2
+0.125
±0.02
±0.01
+5
±2
8
±0.02
±1
±0.02
±2
+0.3
+0.1
+0.02
+14
+11
+14
+0.08
+0.07
+0.1
+0.07
Unit Test Conditions/Comments
V Output unloaded
µA
V External reference must be exactly as stated;
otherwise, accuracy errors show up as error in output
µA
mA
mA
mA See Detailed Description of Features section
mA See Detailed Description of Features section
% FSR
% FSR
% FSR
µA
µA
ppm FSR/°C
mV
% FSR
% FSR
ppm FSR/°C
% FSR
% FSR
ppm FSR/°C
TA = 25°C
TA = 25°C
Referred to 4.096 V input range
TA = 25°C
TA = 25°C
% FSR
% FSR
% FSR
µA
ppm FSR/°C
mV
% FSR
% FSR
ppm FSR/°C
% FSR
% FSR
ppm FSR/°C
TA = 25°C
TA = 25°C
Referred to 4.096 V input range
TA = 25°C
TA = 25°C
Rev. B | Page 3 of 28

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AD5749 전자부품, 판매, 대치품
AD5749
Timing Diagrams
SCLK
SYNC
SDIN
1
t6
t4
2
t7
D15
t3
t8
t1
t2
16
t5
D0
CLEAR
IOUT
t10
t9
Data Sheet
RESET
t13
Figure 2. Write Mode Timing Diagram
SCLK
SYNC
t11
SDIN
SDO
A2 A1 A0 R = 1 0
R3 R2
R1
R0 CLRSEL OUTEN CLEAR RSET RESET
0
0
t12
X
X
X
X
X
R3
R2
R1
R0
CLRSEL OUTEN
RSET
PEC OVER
ERROR TEMP
IOUT
FAULT
X
Figure 3. Readback Mode Timing Diagram
Rev. B | Page 6 of 28

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