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PDF AD5751 Data sheet ( Hoja de datos )
| Número de pieza | AD5751 | |
| Descripción | Industrial I/V Output Driver | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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Preliminary Technical Data
FEATURES
Current Output Ranges: 4–20mA, 0–20mA or 0–24mA,
0.1% Total Unadjusted Error (TUE)
5ppm/°C Output Drift
60V MAX IOUT Compliance Voltage
Voltage Output Ranges: 0-5V, 0-10V, 0-40v
20% over-range
0.1% Total Unadjusted Error (TUE)
Flexible Serial Digital Interface
On-Chip Output Fault Detection
PEC Error Checking
Asynchronous CLEAR Function
Power Supply Range
AVDD : = +12V to +60V (MAX)
Output Loop Compliance to AVDD – 2.5 V
Temperature Range: -40°C to +105°C
LFCSP Packages
APPLICATIONS
Process Control
Actuator Control
PLC
GENERAL DESCRIPTION
The AD5751 is a single channel, low-cost, precision,
voltage/current output driver with hardware or software
programmable output ranges. The software ranges are
configured via an SPI/Microwire compatible serial interface.
The AD5751 targets applications in PLC and industrial process
control. The analog input to the AD5751 is provided from a
low voltage, single supply digital-to-analog converter and is
internally conditioned to provide the desired output
current/voltage range.
The output current range is programmable across three current
ranges - 4–20mA, 0–20mA or 0–24mA.
Industrial I/V Output Driver,
Single Supply, 60v Compliance,
Programmable Ranges
AD5751
Voltage output is provided from a separate pin that can be
configured to provide 0V to 5V, 0V to 10V and 0-40V output
ranges. An over-range of 10% is available on the voltage
ranges.
Analog outputs are short and open circuit protected and can
drive capacitive loads of 1uF and inductive loads of 0.1H.
The device is specified to operate with a power supply range
from 12 V to 60 V. 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 interface
also features an optional PEC error checking feature using
CRC-8 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
asynchronous CLEAR pin which sets the outputs to zero-scale /
mid-scale voltage output or the low end of the selected current
range.
A HW SELECT pin is used to configure the part for hardware
or software mode on power up.
The total output error is typically ±0.1% in both current mode
and voltage mode.
Table 1. Related Devices
Part Number
AD5422
Description
Single Channel, 16-Bit, Serial
Input Current Source and
Voltage Output DAC
Rev. PrA
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
www.analog.com
Fax: 781.461.3113
©2008 Analog Devices, Inc. All rights reserved.
1 page  
Preliminarywww.DataSheet4U.com Technical Data
Parameter
ACCURACY
Total Unadjusted Error (TUE)
TUE TC
Value1
4 to 20
±0.1
±5
Unipolar Output
Relative Accuracy (INL)
Offset Error
Zero Scale Error
Zero Scale TC
Gain Error
Gain Error TC
Full Scale Error
Full Scale Error TC
±0.02
0.01
0.01
TBD
0.15
TBD
0.01
TBD
Unit
mA
% FSR max
ppm max
Test Conditions/Comments
With External Precision Resistor
With External Precision Resistor
AD5751
% FSR max
% FSR max
% FSR max
ppm % FSR max
% FSR max
ppm % FSR max
% FSR max
ppm % FSR max
Error at analog input = 100mv (?)
Error at analog input = 0.0v
(Ideal Span – Measured Span)/Ideal Span
Error at analog input = 4.096v (FS)
Total Unadjusted Error (TUE)
TUE TC
Unipolar Output
Relative Accuracy (INL)
Offset Error
Zero Scale Error
Zero Scale TC
Gain Error
Gain Error TC
Full Scale Error
Full Scale Error TC
Output Current Ranges
(over range)
±0.3
% FSR max
With Internal Resistor
±20 ppm typ
With Internal Resistor
±50 ppm max
±0.02
0.01
0.01
TBD
0.15
TBD
0.01
TBD
0.1 to 24.5
0.1 to 20.4
3.9 to 20.4
% FSR max
% FSR max
% FSR max
ppm % FSR max
% FSR max
ppm % FSR max
% FSR max
ppm % FSR max
mA
mA
mA
Error at analog input = 100mv (?)
Error at analog input = 0.0v
(Ideal Span – Measured Span)/Ideal Span
Error at analog input = 4.096v (FS)
Nominal Over-ranges. See Text Page..
Relative Accuracy (INL)
OUTPUT CHARACTERISTICS
Current Loop Compliance Voltage
Resistive Load
Inductive Load
0.1% Settling Time
DC PSRR
Output Impedance
±0.02
% FSR max
AVDD – 2.5
See Comment
0.1
10
V max
kΩ max
H max
us
1 μA/V max
25 MΩ typ
Chosen such that compliance is not exceeded.
REFERENCE INPUT
Reference Input
Reference Input Voltage
Input Leakage Current
DIGITAL INPUTS
VIH, Input High Voltage
4.096
1
2
V nom
uA max
V min
Rev. PrA | Page 5 of 22
±1% for specified performance
DVCC = 2.7 V to 5.5 V, JEDEC compliant
5 Page 
Preliminarywww.DataSheet4U.com Technical Data
AD5751
LFCSP Pin No.
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25,26,27,28
29
30
Mnemonic
AD0/R3
REXT1
REXT 2
VREF
VIN
GND
AVDD
IOUT
COMP1
COMP2
GND
GND
VOUT
+VSENSE
NC
HW SELECT
RESET
Description
In Hardware Mode, R2 is Range Decode Bit. This pin, in conjunction with R3, R1, R0
choose the output current/voltage range setting on the part.
In Software Mode, AD0 is Device Addressing bit. This pin, in conjunction with AD1, AD2
allow up to 8 devices to be addressed on one bus.
In Hardware Mode, R3 is Range Decode Bit. This pin, in conjunction with R2, R1, R0
choose the output current/voltage range setting on the part.
An external current setting resistor can be connected to this pin to improve the IOUT
temperature drift performance.
When using the Internal RSET resistor these pins must be left floating.
Reference Input
Analog Input (0-4.096v)
Ground Connection.
Positive Analog Supply Pin.
Current Output Pin
Optional compensation capacitor connection for the voltage output buffer
Optional compensation capacitor connection for the voltage output buffer
Ground Connection.
Ground Connection.
Buffered Analog Output Voltage.
Sense connection for the positive voltage output load connection.
No Connect Pin. Can be tied to GND.
This part is used to configure the part to hardware/software mode.
HW SELECT = 0 selects Software Control.
HW SELECT = 1 selects Hardware Control.
In software mode, resets the part to its power on state. Active low.
In hardware mode, there is no RESET. If using the part in hardware mode the RESET
pin should be tied high.
31 FAULT/TEMP In Software mode, acts as a general Fault alert pin. This pin is asserted low when an
open circuit, short circuit, over temperature or PEC Interface Error is detected. Open
drain output, must be connected to a pull-up resistor.
In Hardware mode, acts as an over temp FAULT pin. This pin is asserted low when an
over temperature Error is detected. Open drain output, must be connected to a pull-up
resistor.
32
NC/IFAULT
In Hardware mode, acts as a OPEN circuit Fault alert pin. This pin is asserted low when
an OPEN circuit. Error is detected. Open drain output, must be connected to a pull-up
resistor.
In Software mode, is a NC. Tie to GND.
Rev. PrA | Page 11 of 22
11 Page | ||
| Páginas | Total 22 Páginas | |
| PDF Descargar | [ Datasheet AD5751.PDF ] | |
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