ADuM3154 Datasheet | Analog Devices

FEATURES - Supports up to 17 MHz SPI clock speed - 4 high speed, low propagation delay, SPI signal isolation chan- nels - Supports up to 4 subordinate devices - 20-lead SSOP package with 5.1 mm creepage - High temperature operation: 125°C - High mon-mode transient immunity: >25 k V/µs - Safety and regulatory approvals - UL 1577 - VISO = 3750 V rms for 1 minute - IEC/EN/CSA 62368-1 - DIN EN IEC 60747-17 (VDE 0884-17) - VIORM = 565 V peak APPLICATIONS - Industrial programmable logic controllers (PLCs) - Sensor isolation GENERAL DESCRIPTION The ADu M31541 is an SPIsolator™ digital isolator optimized for a serial peripheral interface (SPI) that includes support for up to four subordinate devices. Based on the Analog Devices, Inc., i Coupler® chip scale transformer technology, the low propagation delay and jitter in the CLK, MO/SI, MI/SO, and SS SPI bus signals support SPI clock rates of up to 17 MHz. The ADu M3154 isolator also provides a subordinate select multiplexing system that allows up to four subordinate devices to be serviced from one isolator. When a target subordinate is selected, the subordinate select signal propagates to the desired output with low propagation delay, allowing tight timing control. The isolated SSx is addressed through a 250 kbps low speed, 2-channel address bus, allowing the target subordinate device to be changed in as little as 2.5 µs. FUNCTIONAL BLOCK DIAGRAM Figure 1. Table 1. Related Products Product ADu M3150 ADu M3151/ADu M3152/ ADu M3153 ADu M4150 ADu M4151/ADu M4152/ ADu M4153 ADu M4154 Description 3. 75 k V, high speed, clock delayed SPIsolator 3.75 k V, multichannel SPIsolator 5 k V, high speed, clock delayed SPIsolator 5 k V, multichannel SPI solator 5 k V, multiple subordinate SPIsolator 1 Protected by U.S. Patents 5,952,849; 6,262,600; 6,873,065; and 7,075,329. Other patents are pending. Rev. C DOCUMENT FEEDBACK TECHNICAL SUPPORT Information furnished by Analog Devices is believed to be accurate and reliable "as is". However, no...