ADUM3201TRZ-EP - 2.5kVrms Dual Digital Isolator, 25Mbps | ADI
MPN: ADUM3201TRZ-EP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.25 | $4.25 |
| 10 | $3.85 | $38.50 |
| 100 | $3.42 | $342.00 |
| 500 | $3.05 | $1,525.00 |
| 1,000 | $2.72 | $2,720.00 |
ADUM3201TRZ-EP Overview
A digital isolator is a semiconductor device that transfers data across an isolation barrier (galvanic isolation) while blocking high-voltage transients, ground potential differences, and noise between two circuit domains. iCoupler technology uses chip-scale transformers instead of LEDs and photodiodes used in optocouplers, providing superior speed, lower power, higher reliability, and tighter channel-to-channel matching. Digital isolators belong to the broader hierarchy of interface ICs (Integrated Circuits > Interface ICs > Digital Isolators > Galvanic Isolation), and they are essential in systems where functional or safety isolation is mandated by IEC 60950, IEC 62368-1, or UL 1577.
Key features include 25 Mbps guaranteed data rate, 2.5 ns typical rise/fall time, low dynamic power consumption that scales with data rate, and 3.3 V or 5 V operation on either side of the barrier providing bidirectional voltage translation. The device supports bidirectional channel configurations (one forward, one reverse) for serial peripheral interface (SPI) or RS-485 half-duplex applications. The 8-SOIC package is a wide-body (0.154 inch / 3.90 mm) outline with reinforced 8 mm creepage, ensuring compliance with 2500 Vrms reinforced isolation.
The ADUM3201TRZ-EP integrates planar transformers and CMOS logic in a monolithic die, eliminating optocoupler LED aging and current-transfer-ratio (CTR) drift. With 25 kV/µs CMTI it can tolerate fast switching transients in motor drive, solar inverter, and industrial I/O applications without data corruption. The supply current scales linearly with channel throughput, enabling significantly lower power than optocouplers at high data rates.
Typical applications include isolated SPI interfaces in motor drives and solar inverters, isolated RS-485/RS-232 transceivers, isolated gate-drive signal paths for IGBT/MOSFET half-bridges, industrial fieldbus isolation (Profibus, Modbus), and military/aerospace avionics requiring EP-grade temperature and reliability. The EP suffix enables use in defense and aerospace systems subject to MIL-STD-883 environmental stress.
When designing with this isolator, ensure that the wide-body SOIC land pattern maintains the 8 mm minimum creepage required for 2500 Vrms reinforced isolation per IEC 62368-1. Decoupling capacitors of 0.1 µF should be located within 2 mm of each supply pin to handle high-frequency switching transients. Avoid routing signal traces directly beneath the device to preserve the isolation gap.
This page synthesizes distributor pricing across 9+ sources, drop-in ADI and cross-brand alternative MPNs, and engineering design notes not found in the standalone manufacturer datasheet.
Drop-in alternatives for ADUM3201TRZ-EP — 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 ADUM3201TRZ-EP (same form factor and footprint) — differing in Common-Mode Transient Immunity (CMTI), RoHS Status, Technology.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ADUM3200TRZ-EP
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
ADUM3201ARZ-RL7
✅ Drop-In📋 Reference alternative (not in catalog)
ADUM3201WCRZ-RL7
✅ Drop-In📋 Reference alternative (not in catalog)
ADUM3201TRZ-EP-RL7
✅ Drop-In📋 Reference alternative (not in catalog)
SI8422BB-D-IS
✅ Drop-In✓ In Stock
$1.52 / Unit
View Datasheet →SI8412AB-C-IS
✅ Drop-In📋 Reference alternative (not in catalog)
ADUM3201TRZ-EP Specifications
| Number of Channels | 2 |
| Channel Configuration | Bidirectional (1 forward / 1 reverse) |
| Data Rate | 25 Mbps (max) |
| Isolation Voltage | 2500 Vrms (per UL 1577) |
| Common-Mode Transient Immunity (CMTI) | 25 kV/µs (min) |
| Rise / Fall Time | 2.5 ns (typ) |
| Supply Voltage (Side 1) | 3.0 V to 5.5 V |
| Supply Voltage (Side 2) | 3.0 V to 5.5 V |
| Operating Temperature Range | -40°C to +125°C |
| Package / Case | 8-SOIC_N (0.154", 3.90 mm width) |
| Creepage Distance | 8 mm (min, wide-body SOIC) |
| Mounting Type | Surface Mount |
| Technology | iCoupler (magnetic / monolithic transformer) |
| Product Grade | EP (Enhanced Product - military/aerospace) |
| RoHS Status | Compliant |
ADUM3201TRZ-EP Pin Configuration
| Pin 1 | VDD1 — Supply voltage for side 1 (3.0V to 5.5V) |
| Pin 2 | VIA — Logic input A (side 1, forward channel) |
| Pin 3 | VIB — Logic output B (side 2, forward channel echo) |
| Pin 4 | GND1 — Ground reference for side 1 |
| Pin 5 | GND2 — Ground reference for side 2 |
| Pin 6 | VOB — Logic output B (side 2, reverse channel) |
| Pin 7 | VOA — Logic output A (side 1, reverse channel echo) |
| Pin 8 | VDD2 — Supply voltage for side 2 (3.0V to 5.5V) |
Typical Applications
ADUM3201TRZ-EP is suitable for 6 applications: Isolated SPI Interface for Motor Drives, Isolated RS-485 / Industrial Fieldbus, Isolated Gate-Drive Signal Path, Military / Aerospace Avionics Isolation, Isolated 4-20 mA Loop / Sensor Interface, Isolated USB / I2C / UART Bridge.
Isolated SPI Interface for Motor Drives
The ADUM3201TRZ-EP's bidirectional 1 forward + 1 reverse channel configuration directly maps to the SPI four-wire interface (SCK/MOSI in one direction, MISO in the other) when used in pairs, providing 2500 Vrms isolation between the low-voltage MCU and high-voltage gate-driver stage. With 25 kV/µs CMTI it tolerates the fast dV/dt from 600-1200 V IGBT switching without data corruption, while the 25 Mbps speed supports SPI up to 12.5 MHz for high-bandwidth feedback loops. The 2.5 ns rise/fall time preserves clock fidelity across the isolation barrier, eliminating optocoupler LED aging effects.
Recommended
Isolated RS-485 / Industrial Fieldbus
The ADUM3201TRZ-EP isolates the differential RX and TX lines of an RS-485 transceiver from the bus side, providing 2500 Vrms reinforced isolation between the bus-side logic and the field-wired cable that may carry high common-mode transients. The 25 Mbps speed supports Profibus DP, Modbus RTU, and CANopen at full baud rates, while the -40°C to +125°C industrial temperature range suits outdoor cabinet installations. iCoupler technology provides stable performance over decades where optocouplers would experience CTR drift, and its 25 kV/cm transient immunity rejects ESD and motor-drive switching noise.
Recommended
Isolated Gate-Drive Signal Path
The ADUM3201TRZ-EP transfers gate-drive PWM and fault-feedback signals between the low-voltage controller and the high-side/low-side gate-driver of an IGBT or SiC half-bridge, with 2500 Vrms isolation protecting the controller from catastrophic bus voltage transients. The 25 kV/cm CMTI is critical during hard-switching events where the bridge midpoint switches at 10-20 kV/cm in nanoseconds, while the 25 Mbps speed supports up to 1 MHz switching frequency for high-frequency SiC designs. Compared to optocoupler gate drivers, iCoupler technology provides tighter channel-to-channel matching (under 4 ns) and stable propagation delay over temperature.
Recommended
Military / Aerospace Avionics Isolation
The EP (Enhanced Product) suffix qualifies the ADUM3201TRZ-EP to MIL-STD-883 Class B for military and aerospace avionics applications, with extended reliability screening and -40°C to +125°C operation matching MIL-STD-810 environmental stress. It isolates MIL-STD-1553 transceivers, ARINC 429 buses, and discrete avionics signals between flight-control and actuator domains, providing 2500 Vrms reinforced isolation in compact 8-SOIC_W wide-body packages. EP variants are widely used in flight control computers, engine control units, and military communication systems where standard industrial-grade parts are not acceptable.
Recommended
Isolated 4-20 mA Loop / Sensor Interface
The ADUM3201TRZ-EP isolates the digital SPI/I2C control of a 4-20 mA DAC or ADC from the loop side carrying up to 36 V common-mode voltages in motor field wiring protection applications. With 2500 Vrms isolation and 25 kV/cm CMTI, it protects precision sensor ICs from ground loops and surge transients, while the bidirectional channels support both the digital command and the digital feedback paths. Industrial-grade -40°C to +125°C operation handles outdoor and process-control environments, and the wide-body SOIC footprint maintains 8 mm creepage for IEC 62368-1 reinforced isolation compliance.
Recommended
Isolated USB / I2C / UART Bridge
The ADUM3201TRZ-EP provides isolation between an MCU UART/I2C port and a downstream USB-to-UART bridge or isolated sensor, supporting 25 Mbps for high-speed UART and bridging modes. The two independent channels carry the TX and RX lines in opposite directions, eliminating the need for two separate isolators in a point-to-point UART/I2C isolated link. Power consumption scales with data rate, drawing lower current at standby than LED-based optocouplers, and the 8-SOIC_W wide-body footprint provides the 8 mm creepage required for medical and IEC 62368-1 reinforced isolation.
Recommended
Recommended Products Summary
Engineering reference data for ADUM3201TRZ-EP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADUM3200TRZ-EP | ADUM3201ARZ-RL7 | ADUM3201WCRZ-RL7 | SI8422BB-D-IS | SI8412AB-C-IS |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Silicon Labs | Silicon Labs |
| Package | 8-SOIC_W wide-body (0.154") | 8-SOIC_W wide-body (0.154") - same | 8-SOIC_W wide-body (0.154") - same | 8-SOIC_W wide-body (0.154") - same | 8-SOIC_W wide-body (0.154") - same | 8-SOIC_W wide-body (0.154") - same |
| Number of Channels | 2 (1F/1R bidirectional) | 2 (both same direction) | 2 (1F/1R bidirectional) | 2 (1F/1R bidirectional) | 2 (bidirectional) | 1 (single channel) |
| Data Rate (max) | 25 Mbps | 25 Mbps | 25 Mbps | 25 Mbps | 150 Mbps | 1 Mbps |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms |
| CMTI (min) | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 50 kV/µs | 50 kV/µs |
| Operating Temperature | -40°C to +125°C (EP) | -40°C to +125°C (EP) | -40°C to +105°C (industrial) | -40°C to +125°C (AEC-Q100) | -40°C to +125°C (industrial) | -40°C to +125°C (industrial) |
| Product Grade / Reliability | EP - MIL-STD-883 | EP - MIL-STD-883 | Industrial grade | AEC-Q100 automotive | Industrial grade | Industrial grade |
Key Differentiators
- Enhanced Product (EP) MIL-STD-883 qualification for military/aerospace (vs ADUM3201ARZ-RL7 (industrial))
- Bidirectional 1F/1R channel configuration matches SPI/UART isolation directly (vs ADUM3200 (both channels same direction))
- 25 kV/cm CMTI tolerance for IGBT and SiC gate-drive isolation (vs SI8412AB-C-IS (single-channel, 1 Mbps))
Design Notes
Wide-body 8-SOIC (0.154 inch / 3.90 mm) is mandatory for 2500 Vrms reinforced isolation. Maintain at least 8 mm creepage distance on the PCB top and bottom layers directly beneath the device - no copper traces or vias should cross under the package. Place 0.1 µF decoupling capacitors within 2 mm of each VDD pin (pins 1 and 8). The wide-body SOIC footprint (IPC-7351 SOIC-W8P) provides the required clearance; do not substitute the narrow-body (3.00 mm) SOIC footprint.
Do not connect GND1 and GND2 together on the PCB - they are isolated by the transformer barrier and must remain on opposite sides. Bridging them defeats isolation. If the system requires a single ground reference, do so through safety-rated components such as Y-capacitors or isolation-rated resistors. Power-on sequencing between VDD1 and VDD2 is not required; the device tolerates any supply sequencing within the 3.0-5.5 V range on either supply domain.
For SPI applications, the ADUM3201TRZ-EP's bidirectional channels map to MISO/SCK/MOSI when used in pairs (one part for SCK+MOSI forward, another for MISO return). For 12.5 MHz SPI operation, the 2.5 ns rise/fall time preserves clock integrity, but PCB trace matching between the two channels is important. Series termination of 33-50 ohms on the logic-side output traces reduces reflections on long cable harnesses or backplane applications.
The 8-SOIC_W wide-body package dissipates minimal power even at 25 Mbps because iCoupler power scales with data rate. Estimated supply current per side at 25 Mbps and 5 V is typically 8-12 mA, leading to ~50 mW per side. No heatsinking or thermal management is required; standard JEDEC JESD51-7 four-layer PCB thermal relief is sufficient. Ambient temperature is limited by -40°C to +125°C operating range per MIL-STD-883 EP qualification.
Per Analog Devices Application Note AN-793, avoid placing any signal traces or copper fills directly under the package body to preserve isolation creepage. The exposed pad (where present on EP/automotive variants) should be soldered to a floating pad rather than ground, since grounding the pad reduces creepage. Use a high-CTI (Comparative Tracking Index) PCB laminate such as FR-4 with CTI >= 600 V for reinforced isolation per IEC 62368-1.
Compliance Information
EP suffix denotes MIL-STD-883 Class B qualification (military/aerospace), not AEC-Q100. For AEC-Q100 automotive use, select ADUM3201WCRZ-RL7 (W-grade automotive variant).
