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MTL4549Y MTL Isolating Driver | Signal Converter

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About the Product

MTL4549 Dual-Channel 4-20mA HART Signal Converter

Core Specifications

• Channels: 2 isolated 4-20mA paths
• HART Support: 500Hz-10kHz bidirectional
• Load Capacity: 800Ω per channel (16V @ 20mA)
• Accuracy: ±20µA @ 20°C (±1µA/°C drift)
• Fault Detection: Open/short-circuit (MTL4549Y = open-only)

Performance Highlights

• Response Time: 100ms to settle within 200µA
• Ripple: <40µA p-p noise-free signal
• Safety Rating: Zone 0 IIC / Div.1 Group A
• Power: 24V DC (70mA max, 1.6W dissipation)

Key Differences

• MTL4549: Detects both open (0.5mA drop) AND short circuits (<50Ω)
• MTL4549Y: Open-circuit detection only (no short-circuit)

Typical Applications

• Dual valve positioners in refineries
• HART-enabled pressure transmitters
• Redundant control loops with fault monitoring
• Safety systems requiring dual-channel isolation

Safety Certifications

• Uo=28V, Io=93mA, Po=0.65W per channel
• Um=253V AC/DC isolation
• T4-T6 temperature class

  • Quick Quotes: Receive pricing and availability fast from our dedicated customer service team.
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  • Warranty: NexAuto offers a 12-month warranty on all parts purchased from us, in addition to any manufacturer coverage.
  • Returns: 30-day return policy for defective or mismatched parts, ensuring peace of mind.
  • Payment: Flexible options including major credit cards, PayPal, and bank transfers.
  • Custom Calibration: Provide your specifications, and we’ll handle the rest with precision.
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