ADM3052BRWZ

Overview

The ADM3052BRWZ is an isolated CAN transceiver with an integrated high-voltage, bus-side linear regulator. It complies with the ISO 11898 standard and supports data rates up to 1 Mbps. The device employs iCoupler technology to combine a 3-channel isolator, CAN transceiver, and linear regulator into a single package. It operates on a logic side supply of 3.3 V or 5 V (VDD1) and a bus side supply of 11 V to 25 V (V+). The component features short-circuit protection, thermal shutdown, and integrated bus miswire protection. It is housed in a wide-body, 16-lead SOIC package and specified for industrial operating temperatures ranging from −40°C to +85°C.

Feature Summary

• Integrated bus-side linear regulator enables power delivery directly from the bus voltage range.
• iCoupler technology provides magnetic isolation between logic and transceiver sections.
• Built-in miswire protection safeguards against incorrect connections on bus pins.
• Thermal shutdown and current limiting protect against output short circuits.

Applications

• CAN data buses
• Industrial field networks
• DeviceNet applications

Procurement Notes

Verify the specific ordering suffix when purchasing. The suffix 'REEL7' indicates tape-and-reel packaging, whereas the absence of this suffix typically denotes tube packaging. Confirm that the RoHS compliant designation ('Z') matches project requirements. Ensure the selected variant aligns with the required quantity format for manufacturing assembly processes.

Selection Notes

Select this component for designs requiring galvanic isolation between the protocol controller and the physical layer bus. It is suitable for systems needing power derived directly from the bus voltage rather than a separate isolated supply. Consider the 16-lead wide-body SOIC package constraints and the requirement for external resistors for the internal linear regulator during circuit design.

Part Context

The ADM3052 belongs to Analog Devices' family of isolated CAN transceivers utilizing iCoupler digital isolation technology. This approach replaces traditional optocouplers by using chip-scale transformers for signal transmission. The device integrates the isolation barrier, transceiver logic, and power regulation into one compact solution, simplifying board layout and reducing component count compared to discrete isolation approaches.

Replacement Considerations

ADM3052BRWZ-REEL7 is the tape-and-reel version of the same functional device.

FAQ

How is the bus-side power supplied to the internal circuitry?

An integrated linear regulator takes the V+ bus power (11 V to 25 V) and regulates it to 5 V to power the internal bus-side circuits, including the iCoupler isolation and transceiver functions.

What happens if the junction temperature exceeds safe limits?

The device includes thermal shutdown circuitry that disables the driver outputs when the junction temperature reaches approximately 150°C. The drivers reenable automatically as the device cools to around 140°C.

Does the device disturb the bus when unpowered?

No, unpowered nodes do not disturb the bus. If the logic side (VDD1) is off but the bus side (V+) is on, the device enters a recessive state without affecting other active nodes.