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Monolithic Power Systems (MPS) MP5490 Fully Integrated Power Management Solution

Monolithic Power Systems (MPS) MP5490 Fully Integrated Power Management Solution is well-suited for the transmitter optical subassembly (TOSA) of optical modules. The MP5490 integrates four high-accuracy current sources (IDx) for distributed feedback (DFB) laser diodes (LDs) and four negative voltage biases for an electro-absorption modulated laser (EML) bias. The MP5490 also provides 4-channel EML current measurements and monitoring photodetector (MPD) current measurements to simplify the design.

The integrated six channels of high-accuracy and low-temperature coefficient analog-to-digital converters (ADCs) can read the external current, voltage, and temperature to save microcontroller (MCU) resources. All output rails can be adjusted via the I2C bus or preset via the multi-page, one-time programmable (MOTP) memory. The Monolithic Power Systems (MPS) MP5490 requires minimal external components and is available in a space-saving WLCSP-36 (3mm x 4.25mm) package.

Features

  • 4-channel, configurable, accurate ID current source
    • Up to 250mA per channel
    • 10-bit digital-to-analog converter (DAC) for ID current
  • 4-channel, configurable, accurate Electro-Absorption Modulated Laser (EML) bias voltage
    • Options to range between -0.1V and -2.5V or -0.1V and -5V
    • Up to 60mA of load current per channel
    • 10-bit DAC for EML bias voltage
  • 4-channel Monitoring Photodetector (MPD) measurement ranges from 0mA to 5mA
  • 6-channel General-Purpose Input/Output (GPIO)
    • Supports analog-to-digital converter (ADC) input or GPO output
    • Selectable open-drain or push-pull GPO
  • High-accuracy, 12-bit ADC
    • 0V to 2.5V external ADC input
    • 4-channel ID voltage measurement
    • 4-channel EML current measurement
  • System
    • I2C control interface
    • I2C hardware reset via HRESET
    • Supply and temperature fault alarms
    • Available in a WLCSP-36 (3mmx4.25mm) package

Typical Application

Block Diagram - Monolithic Power Systems (MPS) MP5490 Fully Integrated Power Management Solution

Related Development Tool

Monolithic Power Systems (MPS) EV5490-C-00A Evaluation Board

Demonstrates the capabilities of the MP5490, a fully integrated power management solution.

Learn Moreabout Monolithic Power Systems (MPS) EV5490-C-00A Evaluation Board View Productsrelated to Monolithic Power Systems (MPS) EV5490-C-00A Evaluation Board
Published: 2025-01-07 | Updated: 2025-01-22