ADIN1140BCPZ - 10BASE-T1S Industrial MAC-PHY | Analog Devices
MPN: ADIN1140BCPZ β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.5 | $4.50 |
| 10 | $4.1 | $41.00 |
| 100 | $3.2 | $320.00 |
| 500 | $2.7 | $1,350.00 |
| 1,000 | $2.24 | $2,240.00 |
Drop-in alternatives for ADIN1140BCPZ β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
ADIN1140BCPZ-RL
β Drop-Inπ Reference alternative (not in catalog)
ADIN1110BCPZ
β‘ Same Packageπ Reference alternative (not in catalog)
ADIN1140BCPZ Maximum Ratings & Electrical Characteristics
| Interface | SPI host interface |
| Network Standard | IEEE 802.3-2022 10BASE-T1S (Clause 148 PLCA) |
| Data Rate | 10 Mbps |
| Ports | 1 (single-port MAC-PHY) |
| Topology | Multidrop and point-to-point |
| Duplex | Half |
| Package | 24-LFCSP (4x4 mm) |
| Mounting Type | Surface Mount |
| Supply Voltage | [DATA_NEEDED: supply voltage range] |
| Power Consumption | [DATA_NEEDED: typical power] |
| Operating Temperature | [DATA_NEEDED: operating temperature range] |
| PLCA Support | Yes (Clause 148 gRS) |
| Safe State Mode | Yes (SAIF configurable benign state) |
| MSL Rating | [DATA_NEEDED: MSL level] |
| RoHS Status | [DATA_NEEDED: RoHS status] |
| Application | Industrial Ethernet connectivity |
ADIN1140BCPZ Pin Configuration
| Pin [DATA_NEEDED] | SPI SCLK β SPI clock from host |
| Pin [DATA_NEEDED] | SPI MOSI/SDI β SPI data from host to MAC-PHY |
| Pin [DATA_NEEDED] | SPI MISO/SDO β SPI data from MAC-PHY to host |
| Pin [DATA_NEEDED] | SPI CS β SPI chip select |
| Pin [DATA_NEEDED] | INT β Interrupt output to host |
| Pin [DATA_NEEDED] | RESET_N β Hardware reset, active low |
| Pin [DATA_NEEDED] | T1S_P β 10BASE-T1S line pair positive |
| Pin [DATA_NEEDED] | T1S_N β 10BASE-T1S line pair negative |
| Pin [DATA_NEEDED] | VDD β Supply voltage |
| Pin [DATA_NEEDED] | GND β Ground |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
ADIN1140BCPZ is suitable for 6 applications: Industrial Automation Sensor Networks, PLC I/O Modules, Building Automation, Battery-Powered Industrial Devices, Robotics and Motion Control Nodes, Condition Monitoring and Diagnostics.
Industrial Automation Sensor Networks
The ADIN1140BCPZ fits industrial sensor nodes because its 10BASE-T1S multidrop topology allows many sensors on one twisted pair with up to 25 m per segment, cutting cabling cost versus point-to-point Ethernet. Its Clause 148 PLCA guarantees collision-free, deterministic access critical for control loops, while the integrated MAC offloads small MCUs via SPI. The low power design suits densely populated I/O installations. Place the ADIN1140 between the sensor MCU SPI bus and the SPE cable with proper magnetics; unlike RS-485 fieldbuses it delivers native IP connectivity with bounded latency.
Recommended
PLC I/O Modules
PLC remote I/O modules benefit from the ADIN1140's integrated MAC-PHY architecture: the SPI host interface lets I/O processors join Ethernet networks without a full software MAC stack, reducing firmware complexity and memory footprint. PLCA timing provides deterministic input/output updates across the multidrop bus, and the safe-state mode can drive SAIF pins to predefined levels for fail-safe module behavior. Typical deployment connects the ADIN1140 SPI to the module MCU and the T1S pair to a multidrop backplane or daisy-chained cabinet wiring, achieving 10 Mbps with bounded cycle times.
Recommended
Building Automation
Building automation nodes such as HVAC controllers, lighting gateways, and access-control panels use the ADIN1140BCPZ to replace legacy buses with IP-native single-pair Ethernet. The 10 Mbps rate and 25 m multidrop segments match structured building wiring distances, while the low quiescent power helps meet energy budgets. The integrated PLCA removes the software complexity of CSMA/CD collision handling on shared segments. Designers typically connect the SPI host interface to a low-cost MCU and power nodes over auxiliary pairs, achieving converged IT/OT networking without rewiring.
Recommended
Battery-Powered Industrial Devices
The ADIN1140's low-power design makes it suitable for battery-operated and energy-harvesting industrial endpoints that still require Ethernet connectivity. Because the MAC functions are integrated in silicon rather than executed in software, the host MCU can sleep longer, reducing overall system energy. Its 10 Mbps SPE link draws far less power than 100 Mbps or 1 Gbps PHYs. Combined with a low-Iq buck regulator, a sensor node can sustain network attachment for extended periods, transmitting on demand via PLCA-assigned slots rather than continuous polling.
Recommended
Robotics and Motion Control Nodes
In robotics cells and distributed motion systems, the ADIN1140BCPZ provides deterministic 10 Mbps connectivity to joint controllers, grippers, and auxiliary sensor clusters over a single lightweight twisted pair. PLCA slot assignment bounds worst-case latency, which is essential for synchronized motion, and the multidrop topology simplifies cable harnesses in moving arms. The SPI host interface lets the motion MCU implement the network stack with minimal overhead. Designers should verify PLCA node counts and cycle times to keep command latency within the motion control budget.
Recommended
Condition Monitoring and Diagnostics
Condition monitoring endpoints - vibration, current, and temperature sensors on motors and drives - use the ADIN1140BCPZ to stream diagnostics data onto IP networks via multidrop SPE. The deterministic PLCA access prevents collision-induced jitter in vibration waveform sampling, while 10 Mbps bandwidth comfortably carries decimated FFT data from many nodes per segment. The compact 4x4 mm 24-LFCSP fits into tight sensor housings, and the safe-state SAIF mode supports fail-safe reporting when the node detects a fault condition on the monitored asset.
Recommended
Recommended Products Summary
Engineering reference data for ADIN1140BCPZ β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADIN1140BCPZ-RL | ADIN1110BCPZ |
|---|---|---|---|
| Package | 24-LFCSP (4x4 mm) | 24-LFCSP (4x4 mm) - same | 24-LFCSP (4x4 mm) - same family |
| Brand | Analog Devices | Analog Devices | Analog Devices |
| PHY Standard | 10BASE-T1S | 10BASE-T1S | 10BASE-T1L |
| Topology | Multidrop / point-to-point | Multidrop / point-to-point | Point-to-point |
| Data Rate | 10 Mbps | 10 Mbps | 10 Mbps |
| PLCA Support | Yes (Clause 148) | Yes (Clause 148) | No (not required for T1L) |
| Max Reach | [DATA_NEEDED] | [DATA_NEEDED] | Up to ~1 km (point-to-point) |
| Packaging | Tray | Tape & Reel | [DATA_NEEDED] |
Key Differentiators
- Native 10BASE-T1S multidrop with integrated MAC (vs ADIN1110BCPZ)
- Safe-state SAIF configuration (vs ADIN1140BCPZ-RL)
- SPI host interface offloads host software (vs Conventional MII PHYs such as ADIN1100)
Design Notes
Keep the 10BASE-T1S differential pair (T1S_P/T1S_N) routed as a matched 100-ohm differential pair with length matching within 0.5 mm; place the line termination/magnetics network per the ADIN1140 datasheet reference schematic close to the LFCSP pins. Use a solid ground plane under the pair and avoid crossings or via stubs that unbalance the pair. The 24-LFCSP 4x4 mm center paddle should be soldered to the ground plane with a via array for thermal and electrical performance.
PLCA configuration is the most common source of multidrop failures. Each node on the 10BASE-T1S segment must have a unique PLCA node ID, and all nodes must agree on node count; mismatched settings cause silent, collision-free-looking failures with no link. Verify PLCA registers via the SPI interface at commissioning. Also ensure the reset sequencing (RESET_N) is completed before attempting SPI transactions, per the ADIN1140 datasheet startup procedure.
The ADIN1140 is designed for low power operation, making it suitable for battery and densely populated multidrop nodes. Decouple the supply pins with at least 100 nF ceramics placed within 2 mm of the LFCSP pins plus one bulk 10 uF capacitor per supply domain. Confirm the exact supply voltage range and current consumption from the ADIN1140 datasheet Rev. 0 electrical characteristics table before finalizing the power budget.
Compliance Information
[DATA_NEEDED: compliance details not present in verified web data; check ADI product page compliance documents]
