AFE782H1RRUT

Analog Front End (AFE) Overview

The AFE782H1RRUT is a 14-bit low-power digital-to-analog converter (DAC) with an integrated HART modem, voltage reference, and diagnostic ADC. It features a 0 V to 2.5 V output range, 180 µA typical quiescent current, and supports SPI or UART interfaces. The device includes a 12-bit 3.84-kSPS diagnostic ADC and a 1.25-V internal reference with 10 ppm/°C drift. Operating temperatures range from –55°C to +125°C in a 24-pin UQFN package.

Analog Front End (AFE) Feature Summary

• 14-bit monotonic DAC with 0.07% max TUE (-40°C to +125°C)
• Integrated HART-compliant FSK modem with programmable TX amplitude
• 12-bit diagnostic ADC for self-health checks at 3.84 kSPS
• Low power consumption: 180 µA typical quiescent current

Analog Front End (AFE) Applications

• Process control and industrial automation systems
• PLC or DCS I/O modules
• 3-wire and 4-wire sensor transmitters
• 4-mA to 20-mA loop-powered applications

Analog Front End (AFE) Procurement Notes

Verify the RRU suffix confirms the 24-pin UQFN package (4.00 mm × 4.00 mm). Confirm functional safety documentation availability if required for system design. Ensure external voltage-to-current conversion components are included in the design as the device does not integrate them.

Analog Front End (AFE) Selection Notes

Select AFE782H1 for 14-bit resolution requirements; choose AFE882H1 for 16-bit precision. Both share identical pinouts and features. Verify IOVDD compatibility with the host controller logic levels. Ensure PVDD supply supports the internal LDO regulation between 2.7 V and 5.5 V.

Analog Front End (AFE) Part Context

Part of the AFEx82H1 family designed for HART-enabled process control. Combines high-accuracy DAC performance with industrial communication protocols. Integrates essential analog front-end components to reduce external component count in transmitter designs.

Analog Front End (AFE) Replacement Considerations

AFE882H1 offers 16-bit resolution with identical packaging and pinout. Cross-reference with AFEx8201 series for legacy compatibility, noting the addition of HART capabilities in the H1 variant.