ADUM7641CRQZ

ADuM7641CRQZ is a quad-channel digital isolator from Analog Devices’ iCoupler family. It provides galvanic isolation between two power domains (A-side and B-side) for four independent digital signals. Built with capacitive (non‑optical) isolation, it offers fast signal transfer, good common-mode rejection, and no ground coupling, enabling safe interfacing of a microcontroller with high-noise or high-voltage circuitry. It uses separate VDD1 and VDD2 supplies and includes protections suitable for industrial and instrumentation environments. The CRQZ suffix indicates the device’s RoHS-compliant package (16-pin) variant. Typical uses include isolating SPI/I2C/UART signals, sensor interfaces, and other digital control lines in applications demanding noise immunity and user-safety isolation. For exact electrical specs (isolation voltage, data rate, propagation delay, temperature range), refer to the ADuM7641 data sheet.

Equivalent parts to ADUM7641CRQZ (4-channel isolated digital isolator) from other vendors include:
- TI ISO764x family (ISO7641/ISO7642) quad-channel isolators
- Silicon Labs Si86xx family (e.g., Si8620/Si8624)
- Broadcom/Avago HCPL-764x family quad-channel isolators
- Renesas Intersil ISL-series quad-channel isolators
- Analog Devices ADuM family equivalents (e.g., ADuM7640/7642, and related ADuM parts)
Note: check isolation voltage, speed, directionality and package to match your BOM.

Key features of ADUM7641CRQZ (concise):
- Quad-channel digital isolator with isoSPI interface (SPI‑like isolated serial bus)
- Four independent data channels between two isolated sides
- Icoupler/isoSPI technology for galvanic isolation
- Two isolated supply rails (VDD1, VDD2); supports 3.3 V or 5 V logic on both sides
- Isolation rating suitable for reinforced isolation (high common-mode rejection)
- Industrial temperature range (-40°C to +125°C)
- Pb‑free, RoHS compliant; compact CRQZ package
- Low power operation with fast edge rates and ESD protection on I/O
Note: For exact voltage, isolation specification, and timing, refer to the official datasheet.

- Pin count: 16 pins (SOIC-16/similar package)
- Function: Quad-channel digital isolator (iCoupler) providing four isolated bidirectional data channels across an isolation barrier. It has two isolated power rails: VDD1/GND1 on the input side and VDD2/GND2 on the output side; channels are routed between A-side (input) pins and B-side (output) pins.

- Manufacturer: Analog Devices, Inc. (Analog Devices).
- What kind of company: A global semiconductor company that designs and manufactures analog, mixed-signal, and digital signal processing ICs, as well as sensors and related products (including isolation and data-conversion devices).

ADUM7641CRQZ is a quad-channel digital isolator. Common applications include:
- Industrial automation/PLCs: galvanic isolation between controllers and field devices (sensors/actuators)
- Power electronics and motor drives: isolated interfaces for control signals
- Data acquisition and instrumentation: isolating sensor and ADC/DAC interfaces
- Automotive and EV electronics: signal isolation in harsh environments
- Medical and laboratory equipment: isolated measurement and control circuits
- Test, measurement, and communication equipment: isolated data links and bus interfaces
- Any system needing galvanic isolation to reduce noise, ground loops, and safety hazards.

The ADUM7641CRQZ is supplied in a 16‑lead wide‑body SOIC package (SOIC_W / R‑16) in tape‑and‑reel packaging.