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Применения > > Flexible PLC/DCS Analog Output Module Using Only Two Analog Components

Flexible PLC/DCS Analog Output Module Using Only Two Analog Components (CN0203)

The circuit shown in Figure 1 provides a full function, flexible, programmable analog output solution with only two analog components and meets most requirements for programmable logic controller (PLC) and distributed control system (DCS) applications. The AD5660-1 low power (2.8 mW @ 5 V), rail-torail output, 16-bit nanoDAC®, combined with the AD5750-1 industrial current/voltage output driver, provides all the typical current and voltage output ranges with 16-bit resolution and no missing codes, 0.05% linearity, and less than 0.1% output error. The circuit also contains key features for industrial applications, such as on-chip output fault detection, CRC checking to prevent packet error (PEC), and flexible power-up options, making it an ideal choice for robust industrial control systems. No external precision resistors or calibration routines are needed to maintain consistent performance in mass production, thereby making it ideal for PLC or DCS modules.

Figure 1. Basic Analog Output Circuit for Single Channel (Simplified Schematic, All Connections and Protection Circuits Not Shown)


  • Programmable analog output
  • 16 bit resolution
  • .1% error with no missing codes
  • Ideal for PLC output modules


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