NXP Semiconductors NAFE33350 Software Configurable Universal AO AFE

NXP Semiconductors NAFE33350 Software Configurable Universal Analog Output AFE helps PLC, remote I/O, building I/O, and industrial HMI systems deliver precise analog voltage and current outputs. It is a software-configurable analog output (AO) analog front end (AFE) with an 18-bit digital-to-analog converter (DAC), a low-drift voltage reference, and low-offset buffers.

The NXP Semiconductors NAFE33350 provides precise control over the ±12.5V and ±25mA output ranges for industrial-grade applications. Built-in open-circuit and short-circuit diagnostics, 65V input protection, and operation from -40°C to 125°C support isolated industrial control and process control systems.

Features

  • High-precision pin-to-pin and firmware-compatible AO-AFE family
  • Factory-calibrated voltage and current output
  • A precise and fast response, AO-AFE architecture provides
    • 18-bit DAC
    • DAC 0ksps to 100ksps data rate
    • ±12.5V, ±25mA
    • ±0.01% accuracy at room
    • ±0.08% accuracy over temperature (voltage mode after room calibration)
    • INL and 2LSB (max.) at 18-bit
  • Software configurable voltage and current analog output with multiple ranges
  • Integrated voltage references
  • Robust and flexible
    • ±36V protected I/O (external transient voltage suppressor (TVS), required)
    • ±7V to ±28V wide supply range, HVDD-HVSS = 14V to 48V
  • -40°C to +125°C temperature range
  • 6mm x 6mm small HVQFN-40 package

Applications

  • Precise voltage systems
  • Current source systems
  • Industrial automation
  • Process control
  • PLC and DCS I/O modules

Block Diagram

Block Diagram - NXP Semiconductors NAFE33350 Software Configurable Universal AO AFE
Published: 2026-07-06 | Updated: 2026-07-27