LTM2883 - SPI/Digital or I2C μModule Isolator with Adjustable ±12.5V and 5V Regulated Power


  • 2500VRMS for One Minute per UL1577
  • UL Recognized ® File #E151738
  • Isolated Adjustable DC Power:
    3V to 5V at Up to 30mA
    ±12.5V at Up to 20mA
  • No External Components Required
  • SPI (LTM2883-S) or I2C (LTM2883-I) Options
  • High Common Mode Transient Immunity: 30kV/μs
  • High Speed Operation:
    10MHz Digital Isolation
    4MHz/8MHz SPI Isolation
    400kHz I2C Isolation
  • 3.3V (LTM2883-3) or 5V (LTM2883-5) Operation
  • 1.62V to 5.5V Logic Supply
  • ±10kV ESD HBM Across the Isolation Barrier
  • Maximum Continuous Working Voltage: 560VPEAK
  • Low Current Shutdown Mode (<10μA)
  • Low Profile (15mm × 11.25mm × 3.42mm) BGA Package

Typical Application

LTM2883 Typical Application
LTM2883 Typical Application


The LTM®2883 is a complete galvanic 6-channel 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 ±12.5V and 5V nominal power supplies, each capable of providing more than 20mA of load current. Each supply may be adjusted from its nominal value using a single external resistor.

Coupled inductors and an isolation power transformer provide 2500VRMS of isolation between the input and output 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.


CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprint compatible with Mentor Graphics PADS® v9.5 or later, and Cadence ORCAD® v16.5 or later.

For complete and up to date package information and drawings, please refer to our packaging page

15mm × 11.25mm × 3.42mm BGA

LTM2883 Package Drawing
LTM2883 Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTM2883CY-3I#PBF BGA 32 C $17.07 $11.95 View
LTM2883CY-3S#PBF BGA 32 C $17.07 $11.95 View
LTM2883CY-5I#PBF BGA 32 C $17.07 $11.95 View
LTM2883CY-5S#PBF BGA 32 C $17.07 $11.95 View
LTM2883IY-3I#PBF BGA 32 I $18.78 $13.15 View
LTM2883IY-3S#PBF BGA 32 I $18.78 $13.15 View
LTM2883IY-5I#PBF BGA 32 I $18.78 $13.15 View
LTM2883IY-5S#PBF BGA 32 I $18.78 $13.15 View
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC1748A-A LTM2883-3S SPI uModule Isolator Demo Board (3.3V Supply) $50.00
DC1748A-B LTM2883-5S SPI uModule Isolator Demo Board (5.0V Supply) $50.00
DC1748A-C LTM2883-3I I2C uModule Isolator Demo Board (3.3V Supply) $50.00
DC1748A-D LTM2883-5I I2C uModule Isolator Demo Board (5.0V Supply) $50.00
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Click here to view our complete list of demo boards


  • Isolated SPI or I2C Interfaces
  • Industrial Systems
  • Test and Measurement Equipment
  • Breaking Ground Loops

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