AD5750ACPZ

The AD5750/AD5750-1/AD5750-2 are single-channel, low cost, precision voltage/current output drivers with hardware- or software-programmable output ranges. The software ranges are configured via an SPI-/MICROWIRE-compatible serial interface. The AD5750/AD5750-1/AD5750-2 target applications in PLC and industrial process control. The analog input to the AD5750/ AD5750-1/AD5750-2 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. Analog input ranges available are 0V to 2.5 V (AD5750-1/AD5750-2) or 0V to 4.096 V (AD5750). The output current range is programmable across five current ranges: 4 mA to 20 mA, 0 mA to 20 mA, 0 mA to 24 mA, ±20 mA, and ±24 mA. An overrange of 2% is available on the unipolar current ranges. Voltage output is provided from a separate pin that can be configured to provide 0V to 5 V, 0 V to 10 V, ±5 V, or ±10 V output ranges. An overrange of 20% is available on the voltage ranges. Analog outputs are short-circuit and open-circuit protected and can drive capacitive loads of 1 μF and inductive loads of 0.1 H. The devices are specified to operate with a power supply range from ±12 V to ±24 V. Output loop compliance is 0V to AVDD - 2.75 V. The flexible serial interface is SPI and MICROWIRE compatible and can operate in 3-wire mode to minimize the digital isolation required in isolated applications. The interface also features an optional PEC feature using CRC-8 error checking, useful in industrial environments where data communication corruption can occur. The devices also include a power-on-reset function, ensuring that the devices power up in a known state (0V or tristate), and an asynchronous CLEAR pin that sets the outputs to a zero scale/midscale voltage output or the low end of the selected current range. The HW SELECT pin is used to configure the parts for hardware or software mode on power-up.

Applications

• Process controls
• Actuator controls
• PLCs

Key features

• Current output ranges: 4 mA to 20 mA, 0 mA to 20 mA, 0 mA to ±4 mA, ±20 mA, and ±24 mA
• ±0.03% full-scale range (FSR) total unadjusted error (TUE)
• ±5 ppm/℃ typical output drift
• Voltage output ranges: 0 V to 5 V, 0 V to 10 V, ±5 V, and ±10 V with 20% overrange
• ±0.02% FSR TUE
• ±3 ppm/℃ typical output drift
• Flexible serial digital interface
• On-chip output fault detection
• Packet error checking (PEC)
• 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℃ to +105℃
• 32-lead, 5 mm × 5 mm LFCSP package