NCN5193MNTWG

Overview

The NCN5193MNTWG is a single-chip CMOS modem designed for Highway Addressable Remote Transducer (HART) field instruments and masters. It operates with a power supply voltage ranging from 1.8 V to 3.5 V and supports an industrial temperature range of -40°C to +85°C. The device utilizes phase-continuous frequency shift keying at a data rate of 1200 bits per second, employing Bell 202 shift frequencies of 1200 Hz and 2200 Hz. It features an integrated 17-bit Sigma-Delta DAC and requires an external crystal or ceramic resonator operating at 460.8 kHz, 920 kHz, 1.84 MHz, or 3.68 MHz. The component is housed in a 32-pin NQFP package.

Feature Summary

• Single-chip half-duplex FSK modem satisfying HART physical layer requirements
• Integrated 17-bit Sigma-Delta DAC for low-BOM current loop slave transmitter implementation
• Internal oscillator compatible with various crystal or ceramic resonator frequencies
• SPI communication interface for register configuration and control

Applications

• HART multiplexers
• HART modem interfaces
• 4-20 mA loop powered transmitters

Procurement Notes

Verify the specific ordering suffix MNTWG corresponds to the 32-pin NQFP package and industrial temperature range (-40°C to +85°C). Confirm RoHS compliance and lead-free status as indicated by the /C0071 marking. Ensure the procurement quantity aligns with the standard tape and reel shipping quantity of 1000 units specified in the official documentation.

Selection Notes

Select this component for applications requiring a complete HART physical layer solution on a single chip. It is suitable for designs needing an integrated DAC for current loop transmission. Ensure the system clock architecture supports the required internal oscillator frequencies or provides an external clock source. Verify that the microcontroller interface supports the SPI mode 1 protocol used for device configuration.

Part Context

The NCN5193 belongs to the HART Modem product family from onsemi. It is specifically engineered to handle modulation, demodulation, receive filtering, carrier detection, and transmit-signal shaping for HART communications. This integration reduces the bill of materials compared to discrete solutions, making it a compact choice for industrial automation and process control instrumentation.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.