ADUM3152BRSZ-RL7 - 7-Ch SPI Isolator 3750Vrms | Analog Devices
MPN: ADUM3152BRSZ-RL7 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.5 | $6.50 |
| 10 | $5.85 | $58.50 |
| 100 | $5.2 | $520.00 |
| 500 | $4.68 | $2,340.00 |
| 1,000 | $4.16 | $4,160.00 |
Drop-in alternatives for ADUM3152BRSZ-RL7 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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ADUM3152BRSZ
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View Datasheet →ADUM3152ARSZ-RL7
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ADUM3153BRSZ-RL7
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View Datasheet →ADUM3152BRSZ-RL7
✅ Drop-In✓ In Stock
$4.16 / Unit
View Datasheet →ADUM3152BRSZ-RL7 Maximum Ratings & Electrical Characteristics
| Isolation Voltage | 3750 Vrms |
| Number of Channels | 7 |
| Data Rate | 34 Mbps |
| CMTI | 25 kV/µs |
| Propagation Delay | 14 ns |
| SPI Clock Rate | 17 MHz |
| Supply Voltage (VDD1/VDD2) | 4.5 V to 5.5 V |
| Operating Temperature | -40°C to +125°C |
| Package | 20-SSOP (0.209", 5.30mm Width) |
| Mounting Type | Surface Mount |
| Technology | iCoupler |
| Number of Terminals | 20 |
| Temperature Grade | Automotive |
| RoHS Status | Compliant |
| Auxiliary Channels | 1/2 directionality |
ADUM3152BRSZ-RL7 Pin Configuration
| Pin 1 | VDD1 — Primary supply voltage (4.5V to 5.5V) |
| Pin 2 | GND1 — Primary ground |
| Pin 3 | CLK — SPI clock input |
| Pin 4 | MO/SI — Master out, slave in data |
| Pin 5 | MI/SO — Master in, slave out data |
| Pin 6 | SS — Slave select input |
| Pin 7 | AUX1 — Auxiliary channel 1 |
| Pin 8 | AUX2 — Auxiliary channel 2 |
| Pin 9 | GND2 — Secondary ground |
| Pin 10 | VDD2 — Secondary supply voltage (4.5V to 5.5V) |
| Pin 11 | VDD2 — Secondary supply voltage |
| Pin 12 | GND2 — Secondary ground |
| Pin 13 | AUX3 — Auxiliary channel 3 |
| Pin 14 | AUX4 — Auxiliary channel 4 |
| Pin 15 | SS — Slave select output |
| Pin 16 | MI/SO — Master in, slave out data |
| Pin 17 | MO/SI — Master out, slave in data |
| Pin 18 | CLK — SPI clock output |
| Pin 19 | GND1 — Primary ground |
| Pin 20 | VDD1 — Primary supply voltage |
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
ADUM3152BRSZ-RL7 is suitable for 6 applications: Industrial PLC Isolated SPI Interface, Motor Drive Isolated SPI, Solar Inverter Isolated Communication, Medical Equipment Isolated Data Acquisition, Automotive Battery Management System (BMS), Isolated Sensor Interface in Data Acquisition Systems.
Industrial PLC Isolated SPI Interface
The ADUM3152BRSZ-RL7 provides galvanic isolation for SPI communication between a PLC's main controller and remote I/O modules. Its 3750 Vrms isolation and 25 kV/µs CMTI ensure reliable operation in industrial environments with high electrical noise. The 34 Mbps data rate supports fast data transfer for real-time control, while the 14 ns propagation delay minimizes latency. The device operates over -40°C to +125°C, suitable for harsh factory floors. Its 7-channel configuration allows isolation of SPI signals plus auxiliary control lines, simplifying system design.
Recommended
Motor Drive Isolated SPI
In motor drives, the ADUM3152BRSZ-RL7 isolates the SPI interface between the microcontroller and gate driver or encoder. Its high CMTI of 25 kV/µs prevents false triggering from fast-switching power stages. The 34 Mbps data rate allows high-speed communication for precise motor control. The device's 3750 Vrms isolation protects low-voltage control circuitry from high-voltage transients. The wide temperature range and automotive grade make it suitable for industrial and automotive motor drives. The 7-channel configuration supports SPI plus auxiliary signals like fault and reset lines.
Recommended
Solar Inverter Isolated Communication
The ADUM3152BRSZ-RL7 isolates SPI communication between the solar inverter's main controller and the MPPT or monitoring ICs. Its 3750 Vrms isolation ensures safety and prevents ground loops in high-voltage systems. The 34 Mbps data rate supports fast data exchange for maximum power point tracking. The device's high CMTI of 25 kV/µs ensures reliable operation in the presence of switching noise from the inverter's power stage. The wide operating temperature range (-40°C to +125°C) is suitable for outdoor installations. The 7-channel configuration allows isolation of SPI plus auxiliary signals like temperature and voltage monitoring.
Recommended
Medical Equipment Isolated Data Acquisition
In medical devices, the ADUM3152BRSZ-RL7 provides isolation for SPI communication between the main processor and isolated sensor front-ends. Its 3750 Vrms isolation meets safety standards for patient isolation. The 34 Mbps data rate supports high-speed data acquisition from imaging sensors or vital sign monitors. The device's low propagation delay (14 ns) ensures accurate timing for synchronized measurements. The 7-channel configuration allows isolation of SPI plus auxiliary control signals. The device's reliability and wide temperature range make it suitable for medical equipment that must operate continuously.
Recommended
Automotive Battery Management System (BMS)
The ADUM3152BRSZ-RL7 isolates SPI communication between the BMS controller and battery monitoring ICs. Its automotive temperature grade (-40°C to +125°C) and 3750 Vrms isolation ensure reliable operation in electric vehicles. The 34 Mbps data rate supports fast communication for real-time battery status monitoring. The high CMTI of 25 kV/µs prevents interference from high-voltage switching in the battery pack. The 7-channel configuration allows isolation of SPI plus auxiliary signals like cell balancing control. The device's robustness meets automotive quality standards.
Recommended
Isolated Sensor Interface in Data Acquisition Systems
The ADUM3152BRSZ-RL7 isolates SPI communication between a data acquisition system's main controller and remote sensors. Its 3750 Vrms isolation eliminates ground loops and reduces noise in sensitive measurements. The 34 Mbps data rate supports high-speed sampling from multiple sensors. The device's 14 ns propagation delay ensures synchronized data acquisition. The 7-channel configuration allows isolation of SPI plus auxiliary signals like trigger and status lines. The wide temperature range and high CMTI make it suitable for industrial and laboratory environments.
Recommended
Recommended Products Summary
Engineering reference data for ADUM3152BRSZ-RL7 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADUM3152BRSZ | ADUM3152ARSZ-RL7 | ADUM3153BRSZ-RL7 |
|---|---|---|---|---|
| Package | 20-SSOP | 20-SSOP | 20-SSOP | 20-SSOP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Data Rate | 34 Mbps | 34 Mbps | 2 Mbps | 34 Mbps |
| Isolation Voltage | 3750 Vrms | 3750 Vrms | 3750 Vrms | 3750 Vrms |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs |
| Propagation Delay | 14 ns | 14 ns | 14 ns | 14 ns |
| Auxiliary Channel Directionality | 1/2 | 1/2 | 1/2 | 2/1 |
| Packaging | Tape & Reel | Tube | Tape & Reel | Tape & Reel |
Key Differentiators
- Higher data rate than ADUM3152ARSZ-RL7 (vs ADUM3152ARSZ-RL7)
- Flexible auxiliary channel directionality (vs ADUM3153BRSZ-RL7)
- Tape and reel packaging for automated assembly (vs ADUM3152BRSZ)
Design Notes
For optimal isolation performance, maintain a minimum creepage distance of 8 mm between the primary and secondary sides on the PCB. Use a ground plane on each side, but do not connect them across the isolation barrier. Place the ADUM3152BRSZ-RL7 close to the SPI connector to minimize trace length and reduce EMI.
Decouple VDD1 and VDD2 with 0.1 µF ceramic capacitors placed as close as possible to the pins. Additionally, use a 10 µF bulk capacitor on each supply rail to handle transient currents. Ensure the supply voltage stays within 4.5V to 5.5V to maintain specified performance.
Route the SPI signals (CLK, MO/SI, MI/SO, SS) with matched trace lengths to minimize skew. Avoid routing high-speed signals near the isolation barrier to prevent coupling. Use differential signaling if possible for improved noise immunity. Follow the layout guidelines in the ADuM315x datasheet for best results.
Compliance Information
RoHS compliant per Analog Devices product page. Automotive temperature grade, but not explicitly AEC-Q100 qualified.