ADIN1140BCPZ - 10BASE-T1S MAC-PHY 10Mbps SPE | Analog Devices
MPN: ADIN1140BCPZ β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.2 | $3.20 |
| 10 | $2.9 | $29.00 |
| 100 | $2.55 | $255.00 |
| 500 | $2.4 | $1,200.00 |
| 1,000 | $2.24 | $2,240.00 |
ADIN1140BCPZ Overview
A MAC-PHY (Media Access Control - Physical Layer device) is an integrated circuit that combines the data-link MAC function with the physical-layer transceiver of an Ethernet port. In the single-pair Ethernet (SPE) hierarchy, 10BASE-T1S sits below 10BASE-T1L and 100BASE-T1 in the IEEE 802.3 family, enabling low-cost, low-pin-count Ethernet to reach sensors, actuators, and edge nodes that previously used CAN, RS-485, or proprietary fieldbus links.
Key features include full IEEE 802.3cg/802.3-2022 compliance, multidrop support for up to 25 nodes per segment over a single twisted pair, and an SPI host interface that implements the Open Alliance TC6 protocol for control and data transactions. The device also provides programmable overvoltage (OV) and undervoltage (UV) monitoring of the VBAT pin, and an integrated safe state controller (SSC) that can move the device into a safely defined mode of operation upon fault detection - a critical function for functional-safety-oriented industrial systems.
Technically, the ADIN1140 performs all medium access, frame buffering, and physical-layer encoding internally, so the host processor needs only a standard SPI peripheral and the vendor-supplied oa_tc6 Linux driver (mainlined in the Linux kernel networking tree). Because the MAC is integrated, deterministic latency is bounded and host CPU load is minimized, which suits resource-constrained microcontrollers.
Typical applications include industrial multidrop sensor networks, building automation, robotics joint and cabinet wiring, and automotive or industrial zonal architectures where a single unshielded single twisted pair replaces multiple fieldbus cables.
Design consideration: multidrop segments must respect total length and node-count limits defined by the 10BASE-T1S PLCA reconciliation sublayer; verify segment topology against the datasheet before routing the pair.
This page synthesizes distributor pricing, verified source data, application guidance, and practical design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for ADIN1140BCPZ β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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Request AlternativesADIN1140BCPZ Specifications
| Product Type | 10BASE-T1S Ethernet MAC-PHY |
| Data Rate | 10 Mbps |
| Duplex Mode | Half duplex |
| Network Topology | Point-to-point or multidrop |
| Standard Compliance | IEEE 802.3cg / IEEE 802.3-2022 10BASE-T1S |
| Host Interface | SPI (Open Alliance TC6 protocol) |
| Integrated MAC | Yes (MAC and PHY in one package) |
| Multidrop Node Support | Up to 25 nodes per segment (PLCA) |
| Supply Monitoring | VBAT overvoltage (OV) and undervoltage (UV) detection with programmable thresholds |
| Safety Feature | Integrated safe state controller (SSC) |
| Package | 24-LFCSP (4x4 mm) |
| Mounting Type | Surface Mount |
| Linux Driver Support | Yes (oa_tc6 driver, mainline kernel) |
| Evaluation Board | EVAL-ADIN1140D1Z |
| RoHS Status | Compliant (Pb-free suffix Z) |
ADIN1140BCPZ 24-lfcsp (4x4 mm) Pin Configuration Guide
Pin configuration for ADIN1140BCPZ (24-lfcsp (4x4 mm) package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for ADIN1140BCPZ.
Refer to the datasheet for full pin configuration.
Typical Applications
ADIN1140BCPZ is suitable for 6 applications: Industrial Multidrop Sensor Networks, Building Automation, Robotics Cabinet Wiring, Automotive Zonal Architecture, Edge IoT Sensor Nodes, Test and Measurement Instrumentation.
Industrial Multidrop Sensor Networks
The ADIN1140's native 10BASE-T1S multidrop support over a single unshielded twisted pair makes it a direct replacement for CAN and RS-485 sensor buses in factory automation. With PLCA collision avoidance and up to 25 nodes per segment at 10Mbps, each sensor or actuator node needs only one ADIN1140, an MCU with SPI, and a transformer-free coupling network - dramatically cutting cabling and switch cost versus switched 100BASE-TX. Because the MAC is integrated and the TC6 SPI protocol bounds host-side processing, even low-end microcontrollers achieve deterministic frame delivery. The integrated safe state controller adds fault containment on shared industrial power rails via programmable VBAT OV/UV thresholds.
Recommended
Building Automation
In building automation, HVAC dampers, occupancy sensors, lighting controllers, and access-control readers are distributed across floors and rooms - a topology where a single twisted pair carrying 10Mbps Ethernet to up to 25 ADIN1140 nodes minimizes installation labor. The ADIN1140's IEEE 802.3cg compliance means standard IP-based management (BACnet/IP, MQTT) reaches every endpoint without protocol gateways. Its half-duplex multidrop operation with PLCA guarantees bounded latency for control traffic, and the SPI/TC6 interface lets cost-optimized MCUs run the full IP stack without an Ethernet MAC. The 24-LFCSP 4x4 mm footprint fits compact wall-mounted devices.
Recommended
Robotics Cabinet Wiring
Modern robot arms and cabinets contain dozens of joint drives, encoders, and safety sensors; wiring each with point-to-point Ethernet dominates cost and failure rates. The ADIN1140 enables a daisy-chained 10BASE-T1S multidrop bus through the cabinet, replacing bundles of cables with one twisted pair. The integrated safe state controller and VBAT OV/UV monitoring support the fault-detection discipline required around safety-rated drives, while the 10Mbps half-duplex link comfortably carries joint telemetry and control frames with PLCA-managed determinism. The mainline Linux oa_tc6 driver simplifies integration with ROS2-based controllers over standard SPI hardware.
Recommended
Automotive Zonal Architecture
Zonal electrical/electronic architectures replace long point-to-point harnesses with local zone controllers interconnected by Ethernet. The ADIN1140 extends 10Mbps 10BASE-T1S connectivity from each zone controller to nearby sensors, actuators, and lighting loads over one balanced pair, supporting up to 25 multidrop nodes per segment per IEEE 802.3cg. Its programmable VBAT overvoltage and undervoltage detection plus the integrated safe state controller address the transient and fault conditions of 12V automotive rails. The compact 24-LFCSP (4x4 mm) package and SPI host interface allow zone endpoints to be built around small, low-cost microcontrollers.
Recommended
Edge IoT Sensor Nodes
For industrial IoT endpoints such as vibration, temperature, and flow sensors, the ADIN1140 provides standards-based IP connectivity without Wi-Fi credentials, gateways, or proprietary protocols. The MAC-PHY integrates all Ethernet processing, so a $1-class MCU with an SPI peripheral and the Open Alliance TC6 protocol achieves full TCP/IP networking; the mainline Linux oa_tc6 driver covers Linux-class gateways. Multidrop operation daisy-chains sensors along one cable run through a plant or pipeline, and 10Mbps bandwidth vastly exceeds sensor data rates, leaving headroom for future analytics traffic. Power consumption is optimized for passive or low-power node designs.
Recommended
Test and Measurement Instrumentation
Test benches and distributed measurement modules benefit from the ADIN1140's deterministic, switchless networking: a single 10BASE-T1S multidrop segment connects oscilloscope-front-end modules, DAQ nodes, and stimulus units over one pair with PLCA-managed, bounded-latency access. Because every node appears as a standard Ethernet endpoint (via TC6 SPI and integrated MAC), hosts run unmodified networking stacks and tools such as SCPI-over-TCP. The EVAL-ADIN1140D1Z board allows instrument designers to validate link timing and segment topologies before committing to a custom 24-LFCSP layout, and the datasheet-provided OV/UV monitoring supports rack power-rail supervision.
Recommended
Recommended Products Summary
Engineering reference data for ADIN1140BCPZ β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADIN1110BCPZ |
|---|---|---|
| Package | 24-LFCSP (4x4 mm) | 24-LFCSP (4x4 mm) - same family, not pin-to-pin |
| Brand | Analog Devices | Analog Devices |
| Ethernet Standard | 10BASE-T1S (IEEE 802.3cg) | 10BASE-T1L (IEEE 802.3bw/802.3gc lineage) |
| Data Rate | 10 Mbps | 10 Mbps (long reach) |
| Topology | Point-to-point or multidrop (up to 25 nodes) | Point-to-point |
| Duplex | Half duplex | Half duplex |
| Host Interface | SPI (Open Alliance TC6) | SPI (Open Alliance TC6) |
| Integrated MAC | Yes | Yes |
| Drop-in Replacement | N/A (target device) | No - different standard, not pin-to-pin (per ADI) |
Key Differentiators
- True multidrop Ethernet without switches (vs ADIN1110BCPZ)
- Integrated MAC removes host Ethernet controller requirement (vs Conventional RMII/RGMII Ethernet PHYs)
- Functional-safety oriented fault handling (vs ADIN1110BCPZ)
Design Notes
The ADIN1140 comes in a 24-lead LFCSP (4x4 mm) with an exposed pad. Connect the exposed pad to a solid ground plane with an array of thermal vias for both thermal dissipation and EMI performance on the 10BASE-T1S pair. Follow the footprint and decoupling recommendations in the ADIN1140 datasheet and the EVAL-ADIN1140D1Z schematics; keep the single-pair Ethernet coupling network components symmetric and close to the device to preserve signal balance.
Use the programmable overvoltage (OV) and undervoltage (UV) monitoring on the VBAT pin as part of the power-supply supervision strategy. Set thresholds according to your rail tolerance budget and wire the safe state controller (SSC) behavior so that a detected fault places the node into its safely defined mode. In multidrop industrial cabinets with shared 24V-derived rails, this fault containment prevents a single miswired node from disturbing the whole segment.
Multidrop 10BASE-T1S segments are subject to IEEE 802.3cg limits on total segment length, drop-line length, and node count (up to 25 nodes with PLCA). Do not assume CAN-style free topology: verify stub lengths and segment reach against the datasheet before routing the twisted pair. On the software side, remember the host communicates exclusively via the Open Alliance TC6 SPI protocol - use the vendor oa_tc6 driver or an equivalent TC6 stack; raw register access will not work.
Compliance Information
RoHS compliant and lead-free inferred from the Pb-free 'Z' suffix in ADIN1140BCPZ per Analog Devices part numbering. REACH, halogen-free, and conflict-minerals status not stated in provided data.
