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LTM2887 Datasheet(PDF) 1 Page - Linear Technology |
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LTM2887 Datasheet(HTML) 1 Page - Linear Technology |
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1 / 38 page  LTM2887 1 2887fb For more information www.linear.com/LTM2887 TYPICAL APPLICATION FEATURES DESCRIPTION SPI/Digital or I2C µModule Isolator with Dual Adjustable 5V Regulators The LTM®2887 is a complete galvanic digital µModule® (micromodule) isolator. No external components are required. A single 3.3V or 5V supply powers both sides of the interface through an integrated, isolated DC/DC converter. A logic supply pin allows easy interfacing with different logic levels from 1.62V to 5.5V, independent of the main supply. Available options are compliant with SPI and I2C (master mode only) specifications. The isolated side includes two 5V nominal power supplies, including programmable current limit, each capable of providing more than 100mA of load current. The supplies may be adjusted from their nominal value using a single external resistor. Coupled inductors and an isolation power transformer provide 2500VRMS of isolation between the input and out- put logic interface. This device is ideal for systems where the ground loop is broken, allowing for a large common mode voltage range. Communication is uninterrupted for common mode transients greater than 30kV/μs. L , LT, LTC, LTM, Linear Technology, the Linear logo and µModule are registered trademarks of Analog Devices, Inc. All other trademarks are the property of their respective owners. Isolated 4MHz SPI Interface APPLICATIONS n 6-Channel Logic Isolator: 2500VRMS for 1 Minute n UL-CSA Recognized File #E151738 n Isolated DC Power: n 1.8V to 5V Logic Supply at Up to 100mA n 0.6V to 5V Auxiliary Supply at Up to 100mA n No External Components Required n SPI/Digital (LTM2887-S) or I2C (LTM2887-I) Options n High Common Mode Transient Immunity: 30kV/μs n High Speed Operation: n 10MHz Digital Isolation n 4MHz/8MHz SPI Isolation n 400kHz I2C Isolation n 3.3V (LTM2887-3) or 5V (LTM2887-5) Operation n 1.62V to 5.5V Logic Supply n ±10kV ESD HBM Across the Isolation Barrier n Maximum Continuous Working Voltage: 560VPEAK n Low Current Shutdown Mode (<10µA) n Low Profile 15mm × 11.25mm × 3.42mm BGA Package n Isolated SPI or I2C Interfaces n Industrial Systems n Test and Measurement Equipment n Breaking Ground Loops LTM2887 Operating Through 50kV/µs CM Transients 2887 TA01a ON CS CS2 LTM2887-5S VL VCC 5V GND GND2 SDI SDOE SDI2 DO2 SCK SCK2 CS SDI SCK CS SDI SCK VL2 AVL2 IVL2 AVCC2 IVCC2 VCC2 SDO SDO2 SDO SDO I2 DO1 I1 5V AT 100mA 3.3V AT 100mA 1.15k 27.4k 1.15k 6.04k 20ns/DIV 5V/DIV 200V/DIV SCK SD0 SCK2 = SD02 2887 TA01b REPETITIVE COMMON MODE TRANSIENTS GND2 TO GND |
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Similar Description - LTM2887 |
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