ADuM3151 Datasheet | Analog Devices

FEATURES - Supports up to 17 MHz SPI clock speed - 4 high speed, low propagation delay, SPI signal isolation chan- nels - Three 250 kbps data channels - 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 - 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 M3151/ADu M3152/ADu M31531 are 7-channel, SPIsolator™ digital isolators optimized for isolated serial peripheral interfaces (SPIs). Based on the Analog Devices, Inc., i Coupler® chip scale transformer technology, the low propagation delay in the CLK, MO/SI, MI/SO, and SS SPI bus signals supports SPI clock rates of up to 17 MHz. These channels operate with 14 ns propagation delay and 1 ns jitter to optimize timing for SPI. The ADu M3151/ADu M3152/ADu M3153 isolators also provide three additional independent low data rate isolation channels in three different channel direction binations. Data in the slow channels is sampled and serialized for a 250 kbps data rate with up to 2.5 µs of jitter in the low speed channels. FUNCTIONAL BLOCK DIAGRAMS Figure 1. ADu M3151 Functional Block Diagram Figure 2. ADu M3152 Functional Block Diagram Figure 3. ADu M3153 Functional Block Diagram 1 Protected by U.S. Patents 5,952,849; 6,873,065; 6,262,600; 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 responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered...