ADUM131E1BRZ - 3-Ch 150Mbps Digital Isolator | Analog Devices
Teilenummer: ADUM131E1BRZ ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $2.74 | $2,74 |
| 10 | $2.46 | $24,60 |
| 100 | $2.18 | $218,00 |
| 500 | $1.94 | $970,00 |
| 1.000 | $1.71 | $1.710,00 |
ADUM131E1BRZ Übersicht
What is a digital isolator? A digital isolator is a semiconductor device that transfers logic-level signals across an isolation barrier while blocking DC and low-frequency transients. Within the broader isolation component hierarchy, digital isolators sit alongside optocouplers (legacy LED-photodiode based devices) as the preferred solution for SPI, I2C, RS-485, GPIO, and high-speed serial interfaces. iCoupler technology uses monolithic air-core transformers rather than LEDs, achieving 10x the data rate, 100x the common-mode transient immunity, and 10x the timing accuracy of optocouplers without the drive current and aging concerns of LED-based designs.
Key features of the ADUM131E1BRZ include 75 kV/µs common-mode transient immunity (CMTI), 25 kV/µs typical CMTI at logic thresholds, a maximum propagation delay of 13 ns at 5 V, low pulse-width distortion of 2 ns, and 100 kV/µs surge capability. The 2:1 channel configuration (2 in / 1 out) suits applications where the host MCU is on the low-voltage domain and two sensor or actuator signals must be received from the high-voltage side. The fail-safe output drives a defined logic state when input supply is removed.
Architecturally, the ADuM131E integrates four independent transformer channels (one per direction plus a power feedback channel) on a single die using Analog Devices' CMOS-monolithic air-core process. Each channel is independently isolated, and the wide-body SOIC-N package provides 8 mm minimum creepage distance to meet reinforced isolation requirements for industrial and renewable energy safety standards.
Typical applications include isolated SPI between microcontroller and gate driver in motor drives, isolated RS-485 transceivers in industrial fieldbus, isolated GPIO in solar inverters and battery management, isolated digital interfaces to setpoint levels in PLC systems, and patient-isolated data acquisition in medical electronics. The 150 Mbps speed grade easily handles standard SPI at 10 MHz, CAN-FD, and isolated UART with margin.
When designing with the ADUM131E1BRZ, place 0.1 µF decoupling capacitors at each VDD pin as close to the IC as possible. Ensure the high-voltage and low-voltage ground planes are physically separated (typically with a 4 mm gap) to maintain isolation. The high CMTI rating (75 kV/µs) allows the device to operate adjacent to fast-switching power stages such as SiC MOSFETs and IGBTs without latchup.
This page synthesizes distributor pricing, drop-in iCoupler alternatives from Analog Devices and competitor manufacturers, and practical PCB layout guidance not found in the manufacturer datasheet alone.
Drop-in-Alternativen für ADUM131E1BRZ – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit ADUM131E1BRZ (gleiche Bauform und Footprint) – abweichend in Common-Mode Transient Immunity (CMTI), MSL Level, Package, RoHS Status, Supply Voltage Range.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
ADUM131E0BRZ
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
ADUM131E1BRWZ
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
ADUM131E1BRZ-RL7
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
SI8442BB-D-IS
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
SI8422BB-D-IS
✅ Drop-In✓ Auf Lager
$1.52 / Stück
Datenblatt ansehen →ADUM131E1BRZ Technische Daten
| Number of Channels | 3 |
| Channel Direction | 2:1 (2 in / 1 out) |
| Data Rate (Maximum) | 150 Mbps |
| Isolation Voltage (RMS) | 3000 Vrms |
| Common-Mode Transient Immunity (CMTI) | 75 kV/µs (minimum) |
| Propagation Delay (Typical) | 13 ns at 5 V |
| Pulse-Width Distortion | 2 ns (maximum) |
| Supply Voltage Range | 2.5 V to 5.5 V (both sides) |
| Betriebstemperaturbereich | -40 °C to +125 °C |
| Technology | iCoupler (CMOS monolithic air-core transformer) |
| Gehäuse | 16-SOIC-N (0.154", 3.90 mm width) |
| Pin-Anzahl | 16 |
| Montageart | Surface Mount |
| MSL-Level | 1 (unlimited) |
| RoHS-Status | Compliant |
| Fail-Safe Output | Yes (high state when input unpowered) |
| Approbations | UL, CSA, VDE (per datasheet) |
ADUM131E1BRZ Pin-Konfiguration
| Pin 1 | VDD1 — Supply voltage for side 1 (2.5 V to 5.5 V) |
| Pin 2 | GND1 — Ground reference for side 1 |
| Pin 3 | VIA — Logic input A on side 1 |
| Pin 4 | VIB — Logic input B on side 1 |
| Pin 5 | VIC — Logic input C on side 1 |
| Pin 6 | NC — Not connected (per datasheet) |
| Pin 7 | NC — Not connected (per datasheet) |
| Pin 8 | VDD2 — Supply voltage for side 2 (2.5 V to 5.5 V) |
| Pin 9 | GND2 — Ground reference for side 2 |
| Pin 10 | VOA — Logic output A on side 2 |
| Pin 11 | VOB — Logic output B on side 2 |
| Pin 12 | VOC — Logic output C on side 2 |
| Pin 13 | NC — Not connected (per datasheet) |
| Pin 14 | NC — Not connected (per datasheet) |
| Pin 15 | NC — Not connected (per datasheet) |
| Pin 16 | NC — Not connected (per datasheet) |
Typische Anwendungen
ADUM131E1BRZ ist geeignet für 6 Anwendungs: Isolated SPI for Motor Drives, Isolated RS-485 Fieldbus, Solar Inverter Isolated GPIO, Battery Management System (BMS) Isolation, Isolated UART for Industrial Sensors, Medical Patient-Isolated Data Acquisition.
Isolated SPI for Motor Drives
The ADUM131E1BRZ is well-suited for isolating SPI communication between a low-voltage microcontroller and a high-voltage gate driver in industrial motor drives. Its 150 Mbps data rate handles SPI buses up to 50 MHz with margin, and the 75 kV/µs CMTI prevents data corruption from fast dV/dt edges produced by switching IGBTs or SiC MOSFETs. The 2:1 channel direction fits typical SPI: MOSI forward, MISO reverse, with one spare channel for a CS or fault feedback signal. Placed between the MCU's 3.3 V SPI port and the gate driver's secondary-side logic, the ADUM131E1BRZ eliminates ground loops and protects the controller from 600 V+ bus transients while preserving the tight timing required for high-resolution PWM synchronization.
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Isolated RS-485 Fieldbus
The ADUM131E1BRZ provides the 3-wire isolation path (data in, data out, and enable control) needed for isolated RS-485 fieldbus networks in industrial automation. Its 150 Mbps speed easily accommodates 20 Mbps PROFIBUS and CAN-FD rates with timing headroom, and the 3000 Vrms isolation meets IEC 61800-5-1 reinforced isolation for adjustable-speed drives. Two channels isolate the differential RX/TX pair while the third channel carries driver-enable or fault feedback across the isolation barrier. Unlike LED optocouplers, the iCoupler monolithic transformer design eliminates LED aging concerns that typically limit optocoupler-based isolators to 5-7 years of reliable service in 24/7 industrial plants.
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Solar Inverter Isolated GPIO
The ADUM131E1BRZ serves as isolated GPIO bridge in solar inverter power stages where 600 V-1500 V DC bus voltages must be controlled from a safe low-voltage digital controller. Its 3000 Vrms continuous isolation provides reinforced-grade protection between the user-accessible control electronics and the high-voltage DC bus, and the 75 kV/µs CMTI rating handles the high dV/dt produced by 100 kHz SiC boost stages without latchup. The 2:1 channel configuration lets two enable signals reach the IGBT gate driver while a single fault flag returns to the MCU. Operating from -40 °C to +125 °C, the device survives outdoor inverter thermal environments and the 25-year service life expectations of solar installations.
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Battery Management System (BMS) Isolation
The ADUM131E1BRZ is used in battery management systems to interface a low-voltage master BMS controller with high-voltage cell-monitoring AFQs. Its 3-channel isolation carries SPI clock, SPI data, and an alert signal across the isolation barrier while blocking dangerous high-voltage DC faults from reaching user-accessible circuits. The 150 Mbps data rate supports 10 MHz SPI communication typically used by modern 16-cell battery monitor AFQs. Two forward channels drive MUX/control signals to the high-voltage side while one reverse channel carries status back. With 75 kV/µs CMTI, the device tolerates fast transients produced by switch-mode precharge circuits during battery pack engagement.
Empfohlen
Isolated UART for Industrial Sensors
The ADUM131E1BRZ isolates UART links between industrial sensors (pressure, flow, temperature) and PLCs in process automation systems. Its 150 Mbps speed handles RS-232 and RS-485 UART rates up to 20 Mbps with substantial timing margin, and the 3000 Vrms isolation protects PLC digital inputs from ground-potential-rise issues common in long-cable sensor installations. The 2:1 channel configuration supports TX forward, RX reverse, with one extra channel available for hardware flow control or a sensor-enable signal. Industrial temperature range of -40 °C to +125 °C and small 16-SOIC-N footprint allow the device to fit inside IP67-rated sensor housings without thermal concerns.
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Medical Patient-Isolated Data Acquisition
The ADUM131E1BRZ provides patient-isolated data acquisition in medical devices such as patient monitors, infusion pumps, and ECG systems where IEC 60601-1 reinforced isolation is required between patient-connected electrodes and the host electronics. The 3000 Vrms continuous isolation and 5000 VFC one-minute withstand rating meet the 250 V working voltage and 4000 V peak transient requirements of patient isolation barriers. The 150 Mbps data rate supports 1 Msps ADC data streaming for ECG and EMG acquisition, and the low 2 ns pulse-width distortion preserves analog signal timing accuracy. The 2:1 channel configuration isolates clock, data, and a frame-sync signal between the isolated front-end ADC and the main processor.
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Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für ADUM131E1BRZ – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | ADUM131E0BRZ | ADUM131E1BRZ-RL7 | SI8442BB-D-IS | SI8422BB-D-IS |
|---|---|---|---|---|---|
| Package | 16-SOIC-N (0.154") | 16-SOIC-N (0.154") - same | 16-SOIC-N (0.154") - same | 16-SOIC-N (0.154") - same | 16-SOIC-N (0.154") - same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Silicon Labs | Silicon Labs |
| Number of Channels | 3 | 3 | 3 | 4 | 2 |
| Channel Direction | 2:1 | 2:1 | 2:1 | 2:2 (bi-directional) | 1:1 |
| Maximum Data Rate | 150 Mbps | 90 Mbps | 150 Mbps | 150 Mbps | 150 Mbps |
| Isolation Voltage (RMS) | 3000 Vrms | 3000 Vrms | 3000 Vrms | 2500 Vrms | 2500 Vrms |
| CMTI (Minimum) | 75 kV/µs | 75 kV/µs | 75 kV/µs | 35 kV/µs | 35 kV/µs |
| Supply Voltage Range | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V |
Wichtigste Unterscheidungsmerkmale
- Highest CMTI in its class at 75 kV/µs minimum (vs. SI8442BB-D-IS (Silicon Labs))
- 3000 Vrms vs 2500 Vrms isolation rating (vs. SI8442BB-D-IS (Silicon Labs))
- True 150 Mbps E-grade speed (vs D-grade 25 Mbps) (vs. ADUM131D1BRZ (same family))
- iCoupler technology eliminates LED aging (vs. Legacy optocouplers (e.g., HCPL-1810))
Designhinweise
Place 0.1 µF decoupling capacitors on both VDD1 (pin 1) and VDD2 (pin 8) as close to the IC pins as possible, ideally within 2 mm of the package body. Add a 10 µF bulk capacitor on each supply if the upstream regulator sits more than 50 mm away. Separate high-voltage and low-voltage ground planes with a minimum 4 mm gap directly under the device to maintain the 3000 Vrms isolation rating; copper traces crossing this gap reduce isolation strength. Per the ADuM131E datasheet layout section, the SOIC-N package provides 8 mm creepage - do not route signal or power traces under the package from one side to the other.
Do not assume the SOIC-N and SOIC-W packages are interchangeable. The ADUM131E1BRZ uses 0.154" body width SOIC-N (3000 Vrms); the ADUM131E1BRWZ uses wider 0.295" SOIC-W (5000 Vrms). While both share 16 pins and similar pinout, the land patterns differ - placing the WRZ part on an N-pattern board or vice versa will result in lifted pads. Do not assume channel direction flexibility: ADUM131E1 is 2:1 fixed, ADUM130E1 is 3:0 - mixing them reverses the input/output relationship and breaks firmware SPI framing.
For high-noise industrial environments (motor drives, solar inverters), place the ADUM131E1BRZ more than 10 mm away from high-dV/dt traces and switching power nodes. The 75 kV/µs CMTI rating is robust, but minimizing coupling from the high-voltage side reduces any chance of common-mode events at the isolator's CM rating limit. Use guard rings connected to the appropriate local ground on both sides of the package to further reduce noise coupling. For medical isolation per IEC 60601-1, ensure the package sits within the patient isolation creepage boundary and use a minimum 8 mm clearance to any user-accessible conductor.
When running the ADUM131E1BRZ near its 150 Mbps data-rate limit, keep input and output traces matched in length (< 5 mm difference) on each side to minimize pulse-width distortion. The 2 ns maximum pulse-width distortion spec is guaranteed at 5 V; at 3.3 V operation the typical distortion is 3 ns. For CAN-FD and SPI applications this is negligible compared to the bus period. However for parallel high-speed interfaces (LVDS replacement), consider the newer ADuM141E/ADuM142E quad-channel devices with sub-nanosecond pulse-width distortion.
Compliance-Informationen
RoHS compliant per Analog Devices product page. UL, CSA, and VDE certified for reinforced insulation per datasheet. AEC-Q100 grade not applicable as the ADUM131E1BRZ is the standard industrial part; AEC-Q100 variants are not available in this family.
