ADM3051BRWZ-RL7 - 5V ISO 11898 CAN Transceiver | ADI
MPN: ADM3051BRWZ-RL7 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.1 | $2.10 |
| 10 | $1.88 | $18.80 |
| 100 | $1.55 | $155.00 |
| 500 | $1.28 | $640.00 |
| 1,000 | $1.12 | $1,120.00 |
Drop-in alternatives for ADM3051BRWZ-RL7 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:
ADM3051CRZ
β Drop-Inπ Reference alternative (not in catalog)
MCP2551-I/SN
β Drop-Inπ Reference alternative (not in catalog)
SN65HVD251DR
β Drop-Inπ Reference alternative (not in catalog)
TJA1050T
β Drop-Inπ Reference alternative (not in catalog)
PCA82C250T
β Drop-Inπ Reference alternative (not in catalog)
TLE6250G
β Drop-Inπ Reference alternative (not in catalog)
ADM3051BRWZ-RL7 Maximum Ratings & Electrical Characteristics
| Product Type | CAN physical layer transceiver |
| Supply Voltage (VCC) | 5 V |
| Data Rate | up to 1 Mbps |
| Standard Compliance | ISO 11898 |
| Bus Nodes | 110 or more |
| Short-Circuit Protection | CANH and CANL against shorts to power/ground in 24 V systems |
| Unpowered Nodes | Do not disturb the bus |
| Slope Control | Yes, for reduced EMI |
| Thermal Shutdown | Yes |
| Low Current Standby Mode | Yes |
| Interface Type | Half duplex |
| Number of Transceivers | 1/1 Transceiver Half CANbus |
| Package | 8-SOIC (SOIC-8) |
| Mounting Type | Surface Mount |
| RoHS Status | Lead-free (Z suffix) |
| Operating Temperature Range | [DATA_NEEDED: ADM3051BRWZ operating temperature range] |
| MSL Level | [DATA_NEEDED: MSL level] |
ADM3051BRWZ-RL7 Pin Configuration
| Pin 1 | TXD β CAN controller transmit data input |
| Pin 2 | GND β Ground |
| Pin 3 | VCC β 5 V supply |
| Pin 4 | RXD β CAN receive data output to controller |
| Pin 5 | VREF β Voltage reference output |
| Pin 6 | CANL β Low-level CAN bus line |
| Pin 7 | CANH β High-level CAN bus line |
| Pin 8 | RS β Slope control / standby mode input |
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
ADM3051BRWZ-RL7 is suitable for 6 applications: Industrial Automation, Automotive Body Electronics, Building Management and HVAC, Battery Management Systems, Medical Equipment, CAN Bus Data Logging.
Industrial Automation
The ADM3051BRWZ-RL7 fits industrial automation CAN buses because it combines a 5 V ISO 11898 physical layer with 1 Mbps data rate, 110+ node bus capacity, and short-circuit protection on CANH/CANL for 24 V power/ground faults commonly found in factory wiring. In a PLC or remote IO module, the transceiver connects the MCU's CAN controller to a 120-ohm terminated twisted pair. Slope control on the RS pin lowers radiated EMI, which helps with EMC compliance in machine cabling, and the low-current standby mode reduces idle power on distributed modules. Thermal shutdown protects the PHY if a field wiring fault forces a sustained overcurrent.
Recommended
Automotive Body Electronics
In automotive body networks, the ADM3051 operates from 5 V and supports high-speed CAN at up to 1 Mbps per ISO 11898, allowing connection to body control modules, lighting, door, and seat modules. The device explicitly supports unpowered nodes that do not disturb the bus, which is valuable when electronic control units (ECUs) are powered down during shipping, diagnostics, or reflashing. Its short-circuit protection covers shorts to power/ground in 24 V truck systems as well as 12 V cars. When paired with an MCU containing a CAN controller such as the SPC560B40L3C6E0X, the ADM3051 forms a compact PHY layer with only termination and filtering components needed.
Recommended
Building Management and HVAC
Building management controllers frequently use CAN buses for HVAC, lighting, and access control. The ADM3051BRWZ-RL7's slope control can be adjusted to reduce EMI on long in-wall cable runs, and its 5 V supply simplifies powering the transceiver from a regulated local rail. The 1 Mbps data rate is sufficient for sensor polling and supervisory commands, while the 110+ node fanout supports large distributed systems. Thermal shutdown and 24 V short-circuit protection make the physical layer resilient to installer wiring errors. In a BMS gateway, the ADM3051 can coexist with an isolated RS-485 transceiver such as the ADM2483BRWZ-RL7 to support multiple fieldbus standards on one controller card.
Recommended
Battery Management Systems
Battery management systems use CAN to communicate cell voltages, temperatures, and charge-state data between pack monitors and the main controller. The ADM3051BRWZ-RL7 can be placed inside the battery pack or on a gateway board, using its 5 V supply and 1 Mbps CAN link to aggregate data. The low-current standby mode is beneficial for sleep-mode states in vehicles and stationary storage, and short-circuit protection to 24 V rails protects the bus if a harness is chafed or mis-wired. The 110+ node capability permits multiple pack monitors on a single bus. It pairs well with an Analog Devices BMS stack monitor such as the ADBMS6948, which measures cell voltage and temperature and reports over serial communication that can bridge to CAN.
Recommended
Medical Equipment
Medical equipment such as patient monitors and diagnostic carts may use a CAN bus to interconnect modules. The ADM3051BRWZ-RL7 provides an ISO 11898-compliant 5 V CAN physical layer at up to 1 Mbps with low EMI via slope control, which is helpful in electromagnetically quiet environments near sensitive analog front ends. Its thermal shutdown and short-circuit protection improve reliability when modules are hot-swapped or when a cable is accidentally damaged. The low-current standby mode meets the low-idle-power needs of battery-powered portable medical devices. Using the RS pin to set a slower slew rate also minimizes radiation, an important consideration for medical EMC standards.
Recommended
CAN Bus Data Logging
For CAN data loggers, fleet telematics, and test instrumentation, the ADM3051BRWZ-RL7 offers a simple 5 V PHY that can be tapped onto an existing 1 Mbps CAN bus without disturbing connected nodes. Since unpowered nodes do not disturb the bus, a logger can be disconnected when not in use. The 110+ node capacity ensures the monitor does not overload a dense bus. In a logger front end, the ADM3051 converts differential bus signals to RXD logic levels for a CAN interface MCU, and its TXD input drives the bus under software control. Slope control allows the designer to tune the edge rate for EMC in vehicle installations.
Recommended
Recommended Products Summary
Engineering reference data for ADM3051BRWZ-RL7 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADM3051CRZ | MCP2551-I/SN | SN65HVD251DR | TJA1050T |
|---|---|---|---|---|---|
| Package | 8-SOIC (SOIC-8) | 8-SOIC (SOIC-8) | 8-SOIC (SOIC-8) | SOIC-8 | SOIC-8 |
| Brand | Analog Devices | Analog Devices | Microchip | Texas Instruments | NXP |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V |
| Data Rate | 1 Mbps | 1 Mbps | 1 Mbps | 1 Mbps | 1 Mbps |
| Bus Node Capability | 110 or more | 110 or more | [DATA_NEEDED: MCP2551 max nodes] | [DATA_NEEDED: SN65HVD251 max nodes] | [DATA_NEEDED: TJA1050T max nodes] |
| Short-Circuit Protection | CANH/CANL to 24 V power/ground | CANH/CANL to 24 V power/ground | Yes (parametric step) | Yes | Yes |
| Slope Control | Yes, via RS pin | Yes, via RS pin | Yes, via RS pin | Yes, via R_s pin | Yes, via RS pin |
| Standby Mode | Low current standby | Low current standby | Yes (standby via RS) | [DATA_NEEDED: standby current value] | No standby mode |
| Pin 5 Function | VREF | VREF | VREF | VREF (verify) | VREF |
Key Differentiators
- Robust fault protection specified for 24 V industrial systems (vs MCP2551-I/SN)
- Low-current standby mode (vs TJA1050T)
- Same-brand grade variant flexibility (vs ADM3051CRZ)
- Slope control for EMI tuning (vs SN65HVD251DR)
Design Notes
Terminate the CAN bus with a 120 ohm resistor between CANH and CANL at each physical end of the network. Stub lengths from transceivers to the bus should be kept as short as possible, ideally below 0.3 m at 1 Mbps, to avoid reflections. The ADM3051 supports 110+ nodes, but that node count assumes proper termination and cable impedance matching. Failure to terminate correctly will cause bit errors and degrade EMC performance.
Place a 100 nF ceramic capacitor as close as possible to the VCC pin and a 1 uF to 10 uF bulk capacitor at the VCC entry point of the transceiver. Keep the CANH and CANL traces balanced and routed as a differential pair with controlled impedance. Do not route the bus traces underneath the transceiver on an adjacent plane unless you maintain a clean ground reference. The RS pin should be connected to a resistor (or direct low level) for slope control; select the resistor value per the datasheet slope-control graph to limit EMI.
The ADM3051 has thermal shutdown protection to prevent damage during bus fault conditions. In normal operation the SOIC-8 package dissipates very little power, but a sustained short on CANH or CANL can generate significant heating. Ensure the PCB provides a low thermal resistance path through the GND plane. If the part repeatedly enters thermal shutdown, check bus wiring and harness connectors for short circuits against 24 V or ground in industrial systems.
For unpowered-node behavior, the ADM3051 presents a high impedance to the bus when VCC is removed, so modules can be disconnected without disturbing communication. To preserve this feature, avoid adding external pull-up or pull-down resistors to CANH/CANL that would load the bus when the transceiver is unpowered. Add an optional common-mode choke on CANH/CANL for improved EMC immunity in noisy industrial or automotive environments.
Compliance Information
Lead-free/RoHS compliant per Z suffix. AEC-Q100 qualification is not confirmed in the verified data. Verify material declarations on the Analog Devices packaging quality page before high-volume production.
