AD5748ACPZ-RL7

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 0V 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 0V 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 an 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.

Applications

• Process control
• Actuator control
• PLCs

Key features

• 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