ADM3061EARMZ

Overview

The ADM3061EARMZ is a half-duplex RS-485 transceiver manufactured by Analog Devices Inc. It operates within a supply voltage range of 3.0 V to 5.5 V and supports data rates up to 500 kbps. The device provides IEC 61000-4-2 electrostatic discharge protection rated at ±12 kV for both contact and air discharge, alongside HBM ratings of ±30 kV. It features full hot swap support, allowing glitch-free power-up and power-down without latch-up or damage. The component includes receiver fail-safe capabilities for short-circuit, open circuit, and bus idle conditions. It utilizes an 8-lead MSOP package and supports operation across extended temperature ranges.

Feature Summary

• IEC 61000-4-2 ESD protection on bus pins
• Full hot swap capability
• Receiver fail-safe design

Applications

• Industrial fieldbuses
• Process control systems
• Building automation networks
• PROFIBUS networks
• Motor control servo drives and encoders

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and temperature grade. Confirm that the intended application environment aligns with the specified operating voltage and data rate limits. Ensure proper PCB layout practices are followed to maintain signal integrity and thermal performance during implementation.

Selection Notes

Select this model for applications requiring robust ESD protection and reliable communication over long cable runs at moderate speeds. The half-duplex architecture suits bidirectional data exchange scenarios. Verify compatibility with system logic levels and ensure adequate decoupling capacitors are placed near the power supply pins for stable operation.

Part Context

This component belongs to the ADM306xE family of RS-485 transceivers designed for industrial environments. The family offers various speed grades and duplex options, with the ADM3061E specifically optimized for lower-speed, long-distance communication. It shares core protection features with higher-speed variants while maintaining cost-effective performance for standard fieldbus applications.

Replacement Considerations

ADM3061EACPZ-R7

FAQ

Does the ADM3061EARMZ support PROFIBUS?

Yes, the device is fully compliant with the PROFIBUS standard when the supply voltage is greater than or equal to 4.5 V.

What is the maximum number of transceivers supported on the bus?

The device features a 1/4 unit load input impedance, allowing up to 128 transceivers to be connected onto a single bus.

How does the device handle bus contention or output shorting?

A thermal shutdown circuit prevents excessive power dissipation by forcing the driver output into a high impedance state if significant internal temperature increases occur during fault conditions.