Analog Devices Inc. ADIN1140 10BASE-T1S MAC-PHY
Analog Devices ADIN1140 10BASE-T1S MAC-PHY is a low-power, high-performance single-port MAC-PHY for industrial single-pair Ethernet connectivity. The device supports 10BASE-T1S networks for multidrop and point-to-point half-duplex applications, enabling low-cost Ethernet communication across building, cabinet, robotics, and zonal architecture designs.
The ADI ADIN1140 integrates an OPEN Alliance 10BASE-T1x MAC-PHY SPI interface and media access control functions for systems that require Ethernet connectivity without a dedicated Ethernet MAC in the host processor. The ADIN1140 includes PLCA support, transmit-priority queues, address filtering, VLAN filtering, EtherType filtering, time synchronization support, topology discovery, and advanced diagnostics.
This MAC-PHY is well-suited for industrial cabinet applications, building automation and control, energy control panels, Ethernet-based zonal architectures, and robotics connectivity. The device supports robust EMC/EMI performance, enhanced noise immunity, and power delivery over the data line. The ADIN1140 operates across a -40°C to +150°C junction temperature range in a small 24-lead LFCSP package.
Features
- Low-power single-port 10BASE-T1S MAC-PHY for industrial single-pair Ethernet connectivity
- Support for point-to-point and multidrop half-duplex PHY operating modes
- PLCA support for improved latency and throughput in half-duplex communication systems
- OPEN Alliance 10BASE-T1x MAC-PHY SPI interface with cut-through or store-and-forward operation
- MAC filtering supports address filtering, VLAN filtering, and EtherType filtering
- IEEE 802.1AS and IEEE 1588 time synchronization support
- OPEN Alliance topology discovery and advanced diagnostics, including PLCA diagnostics
- Safe state controller for fault condition handling
- Compatible with power delivery over the data line
- Robust EMC/EMI performance with enhanced noise immunity for noisy environments
- Low-cost bus interface network support with no external ESD components required
Applications
- Industrial cabinet applications
- Building automation and control
- Energy control panels
- Ethernet-based zonal architectures
- Robotics connectivity
Specifications
- IEEE 802.3-2022 compliant 10BASE-T1S PHY
- Data rate of 10Mbps over single-pair Ethernet
- Point-to-point half-duplex operation tested up to 200m
- Multidrop half-duplex operation of ≥25m with ≥40 nodes validated
- PLCA functions
- PLCA coordinator
- Burst mode
- Precedence mode
- Multiple PLCA IDs
- Transmit priority queues with a total size of 28kB
- 16 MAC address filters
- Maximum current of 50mA in functional operating modes
- Sleep mode current of 40μA
- 1.8V to 3.3V I/O logic levels with 5V input support
- Junction temperature range of -40°C to +150°C
- Package
- 24-lead LFCSP QFN package
- 4mm x 4mm package size
Additional Resources
Functional Diagram
TYPICAL CONNECTION DIAGRAM
Demo Board
Analog Devices Inc. DEMO-ADIN114XAZ Demo Board
Feather-based demo board for evaluating ADIN1140 10BASE-T1S MAC-PHY features.