ADUM151N0BRZ-RL7 - 5-Ch 150Mbps Digital Isolator | Analog Devices
MPN: ADUM151N0BRZ-RL7 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.42 | $5.42 |
| 10 | $4.88 | $48.80 |
| 100 | $4.35 | $435.00 |
| 500 | $3.92 | $1,960.00 |
| 1,000 | $3.48 | $3,480.00 |
ADUM151N0BRZ-RL7 Overview
What is a digital isolator? A digital isolator is a semiconductor device that transfers logic-level signals across an galvanically isolated barrier - typically 2.5 kV to 5 kVrms - while rejecting ground-potential differences, common-mode transients, and EMI. Digital isolators are members of the broader isolation IC family (digital isolator > isolator > interface IC > signal conditioning), and they have largely replaced optocouplers in modern industrial, automotive, and medical designs because they offer higher speed, lower power, tighter channel-to-channel matching, and better long-term reliability. Analog Devices' iCoupler technology uses chip-scale air-core transformers to magnetically couple data across the isolation barrier, while CMOS inputs/outputs provide standard logic-level interfaces.
Key features of the ADuM151N include 5 independent isolation channels configured as 4 forward / 1 reverse in the default MPN suffix, 150 Mbps maximum guaranteed signaling rate, default-output (L-level on power-up) channel behavior, 1.5 ns typical propagation delay, and wide 1.7 V to 5.5 V supply operation on both sides of the barrier. The device supports up to 25 Mbps NRZ signaling with low pulse-width distortion and integrates refresh circuits that continuously update DC output state without signal-edge activity.
Technically, the ADuM151N combines high-speed CMOS and monolithic air-core transformer technology, yielding channel-to-channel matching within 2 ns and isolating each die pair with reinforced insulation per UL/VDE/CQC recognition. The 75 kV/us CMTI ensures robust data integrity in noisy environments with high dV/dt events such as IGBT/MOSFET gate-driver loops and switch-mode power stages.
Typical applications include isolated SPI/UART interfaces between MCU and power-converter primary/secondary stages, isolated gate-drive signaling, industrial fieldbus (RS-485, CAN) isolation, medical equipment patient-isolated data links, and PLC/DCS analog/digital front-end isolation.
Design consideration: ensure that supply pins on each side of the barrier are bypassed with 0.1 uF low-ESR ceramic capacitors placed within 2 mm of the VDD pins, and route logic traces as 50 ohm microstrip or stripline where possible. Note that the "-RL7" suffix denotes reel packaging; pinout and electrical behavior are identical to the ADUM151N0BRZ tube-packed version.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for ADUM151N0BRZ-RL7 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ADUM151N0BRZ-RL7 (same form factor and footprint) — differing in Common-Mode Transient Immunity (CMTI), Operating Temperature Range, Package, Technology.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ADUM151N0BRZ
✅ Drop-In✓ In Stock
$2.85 / Unit
View Datasheet →ADUM151N1BRZ
✅ Drop-In📋 Reference alternative (not in catalog)
ADUM151N1BRZ-RL7
✅ Drop-In📋 Reference alternative (not in catalog)
ADUM150N0BRZ-RL7
✅ Drop-In📋 Reference alternative (not in catalog)
ADUM152N0BRZ-RL7
✅ Drop-In📋 Reference alternative (not in catalog)
ADUM151N0BRZ-RL7 Specifications
| Isolation Type | Digital Isolator (iCoupler) |
| Number of Channels | 5 |
| Channel Configuration | 4 Forward / 1 Reverse |
| Data Rate (max) | 150 Mbps |
| Isolation Voltage (rms) | 3000 Vrms |
| Common-Mode Transient Immunity (CMTI) | 75 kV/us |
| Supply Voltage (VDD1, VDD2) | 1.7 V to 5.5 V |
| Default Output Behavior | Low-level on power-up (suffix "0") |
| Operating Temperature Range | -40C to +125C |
| Package | 16-pin SOIC (0.154", 3.90 mm width, wide-body) |
| Mounting Type | Surface Mount |
| Packaging | Tape & Reel (RL7 = 7-inch reel) |
| Technology | CMOS + monolithic air-core transformer (iCoupler) |
| RoHS Status | Compliant |
ADUM151N0BRZ-RL7 Pin Configuration
| Pin 1 | VDD1 — Side-1 supply voltage (1.7 V to 5.5 V) |
| Pin 2 | GND1 — Side-1 ground reference |
| Pin 3 | VIA — Side-1 input channel A (forward) |
| Pin 4 | VIB — Side-1 input channel B (forward) |
| Pin 5 | VIC — Side-1 input channel C (forward) |
| Pin 6 | VID — Side-1 input channel D (forward) |
| Pin 7 | NC — Not connected (per datasheet) |
| Pin 8 | NC — Not connected (per datasheet) |
| Pin 9 | GND1 — Side-1 ground reference (continued) |
| Pin 10 | VOD — Side-2 output channel D (reverse) |
| Pin 11 | VOC — Side-2 output channel C (forward) |
| Pin 12 | VOB — Side-2 output channel B (forward) |
| Pin 13 | VOA — Side-2 output channel A (forward) |
| Pin 14 | NC — Not connected (per datasheet) |
| Pin 15 | GND2 — Side-2 ground reference |
| Pin 16 | VDD2 — Side-2 supply voltage (1.7 V to 5.5 V) |
Typical Applications
ADUM151N0BRZ-RL7 is suitable for 6 applications: Isolated SPI/UART Communication Bridge, Industrial Fieldbus Isolation (RS-485 / CAN), Isolated Gate-Drive Signaling for Power Converters, Medical Equipment Patient-Isolated Data Links, PLC / DCS Analog-Digital Front-End Isolation, Isolated USB / Ethernet Data Path.
Isolated SPI/UART Communication Bridge
The ADUM151N0BRZ-RL7 is well matched to isolated SPI/UART links between a low-voltage MCU and a high-side power-converter controller: its 150 Mbps data rate exceeds the SPI clock rates of 10 to 50 MHz typically required by digital power stages, and its 3000 Vrms isolation withstands the primary-to-secondary voltage stress in offline converters. Using 4 forward channels for SPI MOSI/SCK/CS/EN and 1 reverse channel for MISO fits the 4F/1R channel map exactly. Its 75 kV/us CMTI ensures clean signaling across the high-dV/dt switching nodes typical of SiC/IGBT half-bridges, and the 1.7 V to 5.5 V supply range matches both 3.3 V MCU rails and 5 V controller rails without level shifters.
Recommended
Industrial Fieldbus Isolation (RS-485 / CAN)
The ADUM151N0BRZ-RL7 serves as a robust signal-level barrier between an MCU and a 24 V fieldbus transceiver in factory-automation and process-control equipment. With 150 Mbps capability it comfortably exceeds the 5 to 50 Mbps edge rates of CAN-FD and high-speed RS-485 links, while the 3000 Vrms withstand rating meets IEC 61804-3 / IEC 61131-2 reinforced isolation requirements. The 4 forward channels can carry TXD, EN, fault, and auxiliary control lines, and the 1 reverse channel is ideal for the RXD feedback path. Its -40C to +125C operating range and 75 kV/us CMTI provide immunity to the large switching transients produced by adjacent motor drives and contactor coils.
Recommended
Isolated Gate-Drive Signaling for Power Converters
In solar inverters, motor drives, and EV traction inverters, the ADUM151N0BRZ-RL7 provides reinforced-isolation PWM signaling between the low-voltage control MCU and the gate-driver ICs of IGBT/SiC half-bridges. Its 75 kV/us CMTI rejects the 50 to 100 kV/us transients produced by hard-switched 600 V to 1200 V power stages, preventing data corruption and shoot-through. The 4 forward channels map cleanly to the 4 PWM inputs of a 3-phase + brake inverter, while the 1 reverse channel carries the fault/FAULTB feedback. The 1.5 ns channel-to-channel matching keeps PWM dead-time consistent, supporting tight switching-loss optimization. The 3000 Vrms rating satisfies IEC 61800-5-1 reinforced isolation for industrial drives.
Recommended
Medical Equipment Patient-Isolated Data Links
For patient-connected medical devices such as infusion pumps, dialysis machines, and patient monitors, the ADUM151N0BRZ-RL7 provides the 3000 Vrms reinforced isolation barrier required by IEC 60601-1 between the patient-side analog front end and the operator-side digital host. Its 150 Mbps data rate supports high-fidelity ECG/EEG waveform streaming, while the 4F/1R channel map fits typical SPI-driven ADC front-ends with one interrupt/flag return. The -40C to +125C operating range and Analog Devices' long-term reliability program support the 7 to 10 year product life typical of medical equipment. Its iCoupler transformer technology eliminates the LED-aging concerns of optocouplers, an important consideration for safety-critical medical designs.
Recommended
PLC / DCS Analog-Digital Front-End Isolation
In programmable logic controllers and distributed control systems, the ADUM151N0BRZ-RL7 isolates the analog-input module backplane from the high-voltage field wiring. The 5 channels can carry 4 multiplexed analog-to-digital converter control lines and 1 high-speed data-ready interrupt back, all with reinforced 3000 Vrms isolation. The 75 kV/us CMTI prevents false triggering in electrically noisy substation or motor-control center environments where 480 V motor starters and relay coils create aggressive dV/dt events. The 1.7 V to 5.5 V supply range lets designers use the same part for 3.3 V or 5 V logic backplanes, simplifying BOM across an entire PLC product family.
Recommended
Isolated USB / Ethernet Data Path
In USB and Ethernet isolation hubs used in industrial PCs and medical-IT equipment, the ADUM151N0BRZ-RL7 supports the differential-pair signaling of USB 2.0 (480 Mbps) and 100BASE-TX Ethernet when paired with appropriate transceiver ICs. While its 150 Mbps rating is below USB 2.0 high-speed (480 Mbps), it cleanly handles USB full-speed (12 Mbps), USB low-speed (1.5 Mbps), and 10BASE-T/100BASE-TX Ethernet data paths with significant margin. The 4F/1R direction map fits isolated PHY-to-MAC interface designs, and the 3000 Vrms isolation meets medical-IT (IEC 60601-1) and industrial-IT (IEC 61850) requirements. The -40C to +125C range supports outdoor and substation installations.
Recommended
Recommended Products Summary
Engineering reference data for ADUM151N0BRZ-RL7 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADUM151N0BRZ | ADUM151N1BRZ | ADUM151N1BRZ-RL7 | ADUM150N0BRZ-RL7 | ADUM152N0BRZ-RL7 |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 16-SOIC (wide-body) | 16-SOIC (wide-body) - same | 16-SOIC (wide-body) - same | 16-SOIC (wide-body) - same | 16-SOIC (wide-body) - same | 16-SOIC (wide-body) - same |
| Number of Channels | 5 | 5 | 5 | 5 | 6 | 5 |
| Channel Direction | 4F / 1R | 4F / 1R | 4F / 1R | 4F / 1R | 6F / 0R | 3F / 2R |
| Data Rate (max) | 150 Mbps | 150 Mbps | 150 Mbps | 150 Mbps | 150 Mbps | 150 Mbps |
| Isolation Voltage (rms) | 3000 Vrms | 3000 Vrms | 3000 Vrms | 3000 Vrms | 3000 Vrms | 3000 Vrms |
| CMTI | 75 kV/us | 75 kV/us | 75 kV/us | 75 kV/us | 75 kV/us | 75 kV/us |
| Default Output on Power-Up | LOW | LOW | HIGH | HIGH | LOW | LOW |
| Packaging | Tape & Reel (RL7) | Tube | Tube | Tape & Reel | Tape & Reel | Tape & Reel |
Key Differentiators
- Single-source drop-in tube variant without re-sourcing tape-and-reel feeders (vs ADUM151N0BRZ (tube))
- Default-low output behavior for low-safe fault signaling (vs ADUM151N1BRZ-RL7 (default-high))
- Optimal 4F/1R channel map for SPI + interrupt signaling (vs ADUM150N0BRZ-RL7 (6F/0R))
- Built-in return channel for half-duplex or feedback signaling (vs ADUM150N0BRZ-RL7 (no reverse))
Design Notes
Bypass VDD1 and VDD2 with 0.1 uF low-ESR ceramic capacitors placed within 2 mm of the supply pins; add a 1 uF to 10 uF bulk capacitor if the supply traces are longer than 25 mm. The two supply domains are galvanically isolated - they MUST be powered from independent sources or from an isolated DC-DC converter (such as the ADM2561EBRNZ-RL7 integrated supply) to maintain barrier integrity. Tie unused input channels (VIA..VID) to VDD or GND on their respective side to avoid floating-input quiescent current.
Route logic traces as controlled-impedance 50 ohm microstrip or stripline where speeds exceed 50 Mbps to limit ringing; keep data traces away from the package edges to preserve the wide-body SOIC creepage/clearance required for the 3000 Vrms isolation rating. Place a ground keep-out under the package body (no copper on inner layers crossing between side-1 and side-2) to maintain galvanic isolation. Refer to the ADuM151N datasheet PCB layout guidelines for the recommended guard trace pattern around the package perimeter.
Although the ADUM151N0BRZ-RL7 supports up to 150 Mbps, channels are specified at 1.5 ns typical propagation delay and ~2 ns channel-to-channel matching. For time-critical interfaces (synchronous SPI clocks, parallel ADC sampling) keep the same-direction data paths on the same die side to minimize timing skew. Do not run forward and reverse channels in adjacent pairs if inter-channel skew matters - this can cause pulse-width distortion on the return data path. The 75 kV/us CMTI rating ensures robust operation next to fast-switching IGBT/MOSFET nodes.
Do not assume the ADUM151N0BRZ-RL7 and ADUM3402BRWZ-RL are interchangeable: the ADuM3402 is a 4-channel part with a different channel-direction pinout despite the same 16-SOIC wide-body footprint. The Si864x/Si8660 Silicon Labs family is NOT pin-compatible with the ADuM151N even though it shares the same wide-body 16-SOIC mechanical outline. The "-RL7" suffix indicates tape-and-reel packaging only; pinout and electrical behavior are identical to the ADUM151N0BRZ tube version. When migrating to a different channel-count variant (ADuM150N or ADuM152N), the data-direction pinout will change and firmware may need updates.
Compliance Information
RoHS compliant per Analog Devices product page; lead-free reflow profile per JEDEC J-STD-020. UL/VDE/CQC safety certifications listed in the ADuM151N datasheet for 3000 Vrms reinforced insulation. Not AEC-Q100 qualified as labeled - automotive applications should verify ADi automotive-grade part numbers separately.
