ADUM3190SRQZ

ADuM3190SRQZ is Analog Devices’ 4-channel iCoupler digital isolator designed for isolated SPI interfaces. It provides galvanic isolation between a host controller (side 1) and an isolated device (side 2) for SPI signals (SCK, MOSI, MISO, CS) and can support other synchronous serial protocols. The device uses iCoupler capacitor-based isolation for high common-mode transient immunity and low propagation delay, enabling high-speed operation with protection from voltage spikes. It requires dual supplies (VDD1 and VDD2) with independent grounds on the two sides. The SRQZ suffix designates a RoHS-compliant, Pb-free package variant (typically a 16-lead small-outline package). Common applications include industrial sensors, motor drives, power supplies, and any system needing isolated data links to protect microcontrollers and reduce ground loops. If you want exact electrical specs (propagation delay, data rate, isolation rating), I can pull the latest datasheet.

ADuM3190SRQZ features (concise):
- 4-channel reinforced digital isolator for SPI/isoSPI interfaces.
- Dual supplies: VDD1 and VDD2 from 2.7 V to 5.5 V (isolated sides).
- Isolation rating: 5 kV RMS (reinforced) per IEC 61000-4-x.
- High-speed data: up to ~25 Mbps per channel (isoSPI-capable).
- Low propagation delay with small channel-to-channel skew (typical a few ns).
- High common-mode transient immunity (≈ 25 kV/µs typical).
- Wide operating temperature: -40 °C to +125 °C.
- Low power consumption.
- Package: 8-lead SOIC (SRQZ variant), RoHS compliant.
- Applications: isolated SPI buses for MCUs, ADCs/DACs, sensors, and other SPI devices.

- Pin count: 16 pins (16‑lead package, e.g., SOIC/MSOP variants like SRQZ).
- Function: ADuM3190SRQZ is a three‑channel, bidirectional digital isolator. It provides three isolated data paths between two power domains (VDD1 and VDD2) for signals such as SPI/UART/I2C, with separate primary/secondary supplies and ground returns.

- Manufacturer: Analog Devices, Inc. (ADI).
- Company type: An American multinational semiconductor company that designs and manufactures analog, mixed-signal, and digital signal processing ICs (e.g., data converters, amplifiers, sensors, power management, and digital isolation products). Headquartered in Norwood, Massachusetts.

ADuM3190SRQZ is a quad-channel digital isolator (iCoupler) for galvanic isolation of SPI signals. Typical applications:
- Isolated SPI interfaces in motor drives and power electronics
- Industrial automation, PLCs, and data acquisition
- Automotive ECUs and sensor interfaces
- Medical instrumentation requiring safety isolation
- General isolated digital communications between MCUs and peripherals (DAC/ADC, memory, sensors)

SOIC-16 (16‑pin Small Outline Integrated Circuit), Pb-free/RoHS compliant.