Product Details
●The AD5748 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 AD5748 targets applications in PLC and industrial process control. The analog input to the AD5748 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 analog input range is 0 V to 4.096 V.
●The output current range is programmable across two current ranges: 4 mA to 21 mA and 0 mA to 21 mA.
●Voltage output is provided from a separate pin that can be configured to provide 0 V to 5 V, 0 V to 10.5 V, or ±10.5 V output range.
●Analog outputs are short-circuit and open-circuit protected and can drive capacitive loads of 2 μF and inductive loads of 0.1 H.
●The device is specified to operate with a power supply range from ±12 V to ±24 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 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 (0 V or tristate), and a asynchronous CLEAR pin that sets the outputs to zero scale/midscale voltage output or 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.
●Note that the plots in the Typical Performance Characteristics section of this data sheet contain information on the standard ranges, as released in the AD5750/AD5750-1 data sheet. Although the overranges have been tested, new plots were not generated and substitution data was used for plotting purposes.
●Applications
● Process control
● Actuator control
● PLCs
●### Features and Benefits
● Current output ranges:
●4 mA to 21 mA, 0 mA to 21 mA
●±0.15% FSR total unadjusted error (TUE)
●±5 ppm/°C FSR typical output drift
● Voltage output ranges: 0 V to 5 V,
●0 V to 10.5 V, ±10.5 V
●±0.05% FSR total unadjusted error (TUE)
●±3 ppm/°C FSR output drift
● Flexible serial digital interface
● On-chip output fault detection
● PEC error checking
● Asynchronous CLEAR function
● Flexible power-up condition to 0 V or tristate
● Power supply range
●AVDD: +12 V (± 10%) to +24 V (± 10%)
●AVSS: −12 V (± 10%) to −24 V (± 10%)
● Output loop compliance to
●AVDD − 2.75 V
● Temperature range: −40°C to +105°C
● 32-lead, 5 mm × 5 mm LFCSP package
