ADUM2401ARIZ-RL

ADuM2401ARIZ-RL is a four-channel digital isolator from Analog Devices’ iCoupler family, intended for isolated SPI-style interfaces. It provides galvanic isolation between two independent power domains, allowing data to cross the barrier without optocouplers. The ARIZ-RL suffix indicates industrial-temperature, RoHS-compliant, tape-and-reel packaging.
Key points:
- 4 isolated channels: two in each direction (e.g., SPI lines like MOSI, SCK, CS one way and MISO the other). Supports full‑duplex SPI across the barrier.
- Separate supply rails on each side (VDD1 and VDD2) with independent grounds.
- No optocouplers; uses iCoupler capacitive isolation for high-speed, low-power signaling and good noise immunity.
- Typical data rates in the tens of Mbps range with low propagation delay; suitable for many microcontroller to peripheral links.
- Applications: isolating MCU from high-voltage/noisy environments (industrial, automotive, power-monitoring, sensor interfaces).
For exact pinout, package details, voltage, and timing specs, consult the datasheet specific to ADuM2401ARIZ-RL.

Equivalent products to the ADuM2401ARIZ‑RL (ADI’s dual‑channel digital isolator) include other ADI ADuM240x family parts (ADuM2400/2401 variants), and comparable digital isolators from other vendors such as Silicon Labs’ Si86xx series, TI’s ISO7xxx/ISO78xx digital isolators, and Broadcom/Avago ACPL/HCPL digital isolator families. Choose specific part numbers by matching channel count, data rate, directionality and isolation rating.

Here are the key features of the ADUM2401ARIZ-RL:
- 4-channel digital isolator using iCoupler technology
- Galvanic isolation between input and output (up to 5 kV RMS basic isolation)
- Four isolated signal channels (data transfer across the isolation barrier)
- Compatible with 3.3 V and 5 V logic on both sides
- UVLO on both sides for safe power-up/power-down
- Low power consumption relative to optocouplers
- Wide industrial temperature range (typical -40°C to +125°C)
- RoHS-compliant, tape-and-reel packaging (ARIZ-RL suffix)
Optional note: For exact propagation delays, data rate, and CMTI values, consult the official datasheet.

- Pin count: 16 pins.
- Function: ADuM2401ARIZ-RL is a 4-channel digital isolator with dual supplies. It provides four isolated data channels across a galvanic barrier: two channels are from side A (primary) to side B (secondary) and two channels from B to A. The primary side has VDD1/GND1, the secondary side has VDD2/GND2. Pins are A1–A4 on the primary and B1–B4 on the secondary (with corresponding supply and ground pins).

Manufacturer: Analog Devices, Inc. (ADI).
What kind of company: ADI is an American multinational semiconductor company that designs and manufactures high‑performance analog, mixed‑signal, and digital signal‑processing integrated circuits — including data converters, amplifiers, power management ICs and isolation devices (the ADuM family).

Applications of ADUM2401ARIZ-RL (4-channel digital isolator) include:
- Isolation of SPI/I2C/UART and other digital signals between a host MCU and isolated circuitry
- Industrial automation, PLCs, robotics, motor drives, and power electronics
- Data acquisition, instrumentation, and test equipment requiring galvanic isolation
- Medical and laboratory instrumentation
- Automotive, avionics, and consumer electronics needing noise immunity and ground-loop reduction
- Renewable energy inverters and smart power supplies
Note: ARIZ-RL denotes the RoHS-compliant, tape-and-reel package variant.

8-pin SOIC (8‑lead Small Outline IC) package, RoHS compliant, in Tape & Reel (RL) form.