Datasheet AD5750, AD5750-1, AD5750-2 (Analog Devices)

Industrial Current/Voltage Output Driver with Programmable Ranges Data Sheet AD5750/ AD5750-1/ AD5750-2 FEATURES
The output current range is programmable across five current
Current output ranges: 4 mA to 20 mA, 0 mA to 20 mA, 0 mA
ranges: 4 mA to 20 mA, 0 mA to 20 mA, 0 mA to 24 mA, ±20 mA,
to 24 mA, ±20 mA, and ±24 mA
and ±24 mA. An overrange of 2% is available on the unipolar
±0.03% full-scale range (FSR) total unadjusted error (TUE)
current ranges.
±5 ppm/°C typical output drift
Voltage output is provided from a separate pin that can be
Voltage output ranges: 0 V to 5 V, 0 V to 10 V, ±5 V, and ±10 V
configured to provide 0 V to 5 V, 0 V to 10 V, ±5 V, or ±10 V
with 20% overrange
output ranges. An overrange of 20% is available on the voltage
±0.02% FSR TUE
ranges.
±3 ppm/°C typical output drift
Analog outputs are short-circuit and open-circuit protected and
Flexible serial digital interface
can drive capacitive loads of 1 µF and inductive loads of 0.1 H.
On-chip output fault detection Packet error checking (PEC)
The devices are specified to operate with a power supply range
Asynchronous CLEAR function
from ±12 V to ±24 V. Output loop compliance is 0 V to AVDD −
Flexible power-up condition to 0 V or tristate
2.75 V.
Power supply range
The flexible serial interface is SPI and MICROWIRE compatible
AVDD: +12 V (± 10%) to +24 V (± 10%)
and can operate in 3-wire mode to minimize the digital isolation
AVSS: −12 V (± 10%) to −24 V (± 10%)
required in isolated applications. The interface also features an
Output loop compliance to AVDD − 2.75 V
optional PEC feature using CRC-8 error checking, useful in
Temperature range: −40°C to +105°C
industrial environments where data communication corruption
32-lead, 5 mm × 5 mm LFCSP package
can occur.
APPLICATIONS
The devices also include a power-on-reset function, ensuring that
Process controls
the devices power up in a known state (0 V or tristate), and an
Actuator controls
asynchronous CLEAR pin that sets the outputs to a zero scale/mid-
PLCs
scale voltage output or the low end of the selected current range.
GENERAL DESCRIPTION
The HW SELECT pin is used to configure the parts for hardware or software mode on power-up. The AD5750/AD5750-1/AD5750-2 are single-channel, low cost, precision voltage/current output drivers with hardware- or
Table 1. Related Devices
software-programmable output ranges. The software ranges are
Part Number Description
configured via an SPI-/MICROWIRE™-compatible serial interface. AD5422 Single channel, 16-bit, serial input current The AD5750/AD5750-1/AD5750-2 target applications in PLC source and voltage output DAC and industrial process control. The analog input to the AD5750/ AD5751 Industrial I/V output driver, single supply, 55 V AD5750-1/AD5750-2 is provided from a low voltage, single-supply maximum supply, programmable ranges digital-to-analog converter (DAC) and is internally conditioned AD5420 Single channel, 16-bit, serial input, 4 mA to to provide the desired output current/voltage range. Analog input 20 mA current source DAC ranges available are 0 V to 2.5 V (AD5750-1/AD5750-2) or 0 V to 4.096 V (AD5750).
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Document Outline Features Applications General Description Table of Contents Revision History Functional Block Diagram Specifications Timing Characteristics Timing Diagrams Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Voltage Output Current Output Terminology Theory of Operation Software Mode Current Output Architecture Driving Inductive Loads Voltage Output Amplifier Driving Large Capacitive Loads Power-On State of AD5750/AD5750-1/AD5750-2 Default Registers at Power-On Reset Function OUTEN Software Control Input Shift Register Status Bit Read Operation Hardware Control Transfer Function Detailed Description of Features Output Fault Alert—Software Mode Output Fault Alert—Hardware Mode Voltage Output Short-Circuit Protection Asynchronous Clear (CLEAR) External Current Setting Resistor Programmable Overrange Modes Packet Error Checking Applications Information Transient Voltage Protection Thermal Considerations Layout Guidelines Galvanically Isolated Interface Microprocessor Interfacing Outline Dimensions Ordering Guide