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ADUM3154BRSZ
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Product Detailed Parameters
- Description：DGTL ISO 3.75KV 4CH SPI 20-SSOP
- Series：iCoupler®, SPIsolator™
- Mfr：Analog Devices Inc.
- Package：Tube
- Number of Channels：4
- Voltage - Isolation：3750Vrms
- Rise / Fall Time (Typ)：2.5ns, 2.5ns
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：20-SSOP (0.209", 5.30mm Width)
- Supplier Device Package：20-SSOP
- Grade：-
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Overview
The ADUM3154BRSZ is a 7-channel digital isolator designed for SPI multiple slave interfaces. It features magnetic coupling technology with a 3750 Vrms isolation rating and supports data rates up to 34 Mb/s. Operating on a 3 V to 5.5 V supply, it exhibits a typical propagation delay of 14 ns. The component is housed in a 20-lead SSOP package and functions within a temperature range of -40°C to +125°C.
Feature Summary
- Provides seven isolated channels optimized for SPI multiple slave configurations
- Utilizes iCoupler magnetic coupling technology for signal transmission
- Supports high common-mode transient immunity for reliable operation
Applications
- SPI interface isolation for multiple slave devices
- Industrial process control systems requiring galvanic isolation
- Medical equipment with strict isolation requirements
Procurement Notes
Verify the specific suffix (RL7 vs tube) against the required packaging format. Confirm availability status as distribution may vary. Ensure the 20-lead SSOP footprint matches the design layout. Validate that the 3750 Vrms isolation rating meets system safety standards.
Selection Notes
Select this component when a single device must isolate multiple SPI lines simultaneously. Consider the 14 ns propagation delay for timing-critical applications. Verify that the 3 V to 5.5 V supply range aligns with the system voltage levels. Check thermal dissipation requirements given the 1.4 W power dissipation capability.
Part Context
This part belongs to the ADUM3154 series of digital isolators from Analog Devices. It is specifically engineered to replace traditional optocouplers in SPI applications. The series offers higher reliability and smaller form factors compared to legacy isolation technologies.
Replacement Considerations
Direct substitutes include other ADUM315x variants with different channel counts or packaging options. Cross-reference pinouts and electrical characteristics before substitution. Verify that alternative parts support the same SPI multiple slave architecture.
