ADUM6411BRSZ

ADuM6411BRSZ is a quad-channel digital isolator from Analog Devices built with iCouple technology. It provides galvanic isolation between a host side and a peripheral side, allowing safe high-speed digital communication across a barrier (protects against voltage transients and ground loops).
Key points
- 4 signaling channels with independent VDD1 and VDD2
- Isolation typically around 2.5 kV RMS (basic isolation)
- RoHS-compliant, available in RSZ package variant
- Wide operating supply range on each side (approximately 2.7–5.5 V)
- Low propagation delay and low power
- Used to isolate interfaces such as SPI, I2C, UART, and other digital lines in microcontroller, sensor, motor, and industrial/medical/automotive apps
In short: a robust, multi-channel isolated data link that keeps noisy or high-voltage circuitry separated from the logic side while preserving data integrity.

Direct equivalents are other four‑channel digital isolators with similar speed, isolation and package: Silicon Labs Si86xx family (e.g. Si862x/Si864x), Texas Instruments ISO77xx/ISO74xx series (e.g. ISO7741/ISO7742), Broadcom/Avago ACPL digital isolators, and NVE/Semtech isolator families. Verify channel count, data rate, isolation voltage, logic levels and pinout against the ADuM6411B datasheet before substitution.

Here are the main features of the ADuM6411BRSZ (digital isolator):
- 4-channel isolated, bidirectional digital data transfer (A-side to B-side and vice versa)
- 5 kV rms isolation between the two sides
- Independent VDD1 and VDD2 supplies (3.0–5.5 V on each side)
- Compatible with 3.3 V and 5 V logic on both sides
- Bus-hold inputs for stable signal interpretation
- High common-mode transient immunity (CMTI) for robustness in noisy environments
- Suitable for industrial temps: otherwise specified for -40°C to +125°C
- RoHS-compliant, compact 8-pin package (RSZ variant, typical SOIC)
- Low power consumption and no external components required for basic operation
Note: For exact electrical specs (data rate, propagation delay, CMTI value, and recommended operating conditions), please refer to the latest ADuM6411B datasheet.

Pin count: 8 pins (8‑lead SOIC package, suffix RSZ).
Primary pin functions:
- VCC1, GND1: supply and ground for side‑1 (logic side 1)
- VCC2, GND2: supply and ground for side‑2 (logic side 2)
- A1, A2: digital I/O channels on side‑1
- B1, B2: digital I/O channels on side‑2
Function summary: The ADuM6411B is a 4‑channel digital isolator (two channels per side), providing galvanic isolation between side‑1 and side‑2 for digital signals (level translation and protection against ground differentials). Check the Analog Devices datasheet for directionality, voltage, speed, and isolation rating details.

Manufacturer: Analog Devices, Inc. (ADI).
What kind of company: ADI is a multinational semiconductor company that designs and manufactures high-performance analog, mixed-signal and digital signal‑processing integrated circuits and related components — including isolation devices such as the ADuM family. It supplies parts for industrial, automotive, communications, instrumentation and consumer markets and is publicly traded (NASDAQ: ADI).

ADuM6411BRSZ is a 4-channel digital isolator. Typical application areas include:
- Industrial automation and control (SPI/I2C/UART isolation)
- Motor drives and power electronics
- Medical instrumentation with patient safety isolation
- Data acquisition and instrumentation needing galvanic isolation
- Automotive ECUs
- Telecom/embedded systems requiring isolated digital signals

The ADUM6411BRSZ is supplied in an 8-lead SOIC surface-mount package (SO-8; RSZ = 8-lead SOIC).