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The interface to the optical cable requires specific physical layer transmitters and receivers to manage signal conversion between the electrical and optical domains. This conversion is normally performed in an optical transceiver module. We provide a family of products that drive optical transmitter devices such as lasers or silicon photonics along with receivers that amplify, reshape, and retime signals from a photodiode. These products are currently offered for bitrates up to 50Gbps. We also offer control and power management products that are optimized for optical module applications to complete the chipset needed in an optical module.

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Featured Products

MAX3747A 155Mbps to 3.2Gbps, Low-Power SFP Limiting Amplifiers

The MAX3747A/MAX3747B multirate limiting amplifiers function as data quantizers for OC-3 through...
  • Pin Compatible with Micrel SY88993V
  • 155Mbps to 3.2Gbps Operation
  • > 57dB of Gain
  • < 10-12 BER with 2mVP-P Input Amplitude
  • 18mA Supply Current
  • Chatter-Free LOS with Programmable Threshold
  • Output DISABLE Function
  • PECL-Compatible Inputs

DS3911 Temperature-Controlled, Nonvolatile, I²C Quad DAC

The DS3911 is a quad, 10-bit delta-sigma output, nonvolatile (NV) controller that features an on...
  • Four 10-Bit Delta-Sigma Outputs
  • On-Chip Temperature Sensor and ADC
  • Four Temperature-Indexed LUTs, Up to 2°C Resolution
  • I²C-Compatible Serial Interface
  • Address Pins Allow Up to Four DS3911s to Share the Same I²C Bus
  • 2.8V to 5.5V Digital Supply
  • -40°C to +100°C Operating Temperature Range
  • 3mm x 5mm, 14-Pin TDFN Package

MAX3945 1.0625Gbps to 11.3Gbps, SFP+ Dual-Path Limiting Amplifier

The MAX3945 is a +3.3V, multirate, low-power limiting amplifier optimized for Fibre Channel and ...
  • 130mW Power Dissipation Enables < 1W SFP+ Modules
  • Enables Single-Module Design Compliance with 1000BASE-SX/LX and 10GBASE-SR/LR Specifications
  • -25.3dBm Optical Sensitivity at 1.25Gbps Using a 10.32Gbps ROSA
  • Selectable 1GHz/2.1GHz/2.5GHz/3GHz Input Filters at RATE_SEL = 0 Setting
  • Supports SFF-8431 SFP+ MSA and SFF-8472 Digital Diagnostic
  • Total Power Dissipation of 130mW at 3.3V Power Supply with RSSI Monitor-Based LOS
  • Total Power Dissipation of 154mW at 3.3V Power Supply with Rx Input-Based LOS
  • 4mVP-P Input Sensitivity at 11.3Gbps
  • 4psP-P DJ at 11.3Gbps with RATE_SEL = 1
  • 4psP-P DJ at 8.5Gbps with RATE_SEL = 1
  • 5psP-P DJ at 4.25Gbps with RATE_SEL = 0, BW1 = 1, BW0 = 1
  • 9.0psP-P DJ at 1.25Gbps with RATE_SEL = 0, BW1 = 0, BW0 = 0
  • 26ps Rise and Fall Time with RATE_SEL = 1
  • 52ps Rise and Fall Time with RATE_SEL = 0
  • CML Output with Level Adjustment and Squelch Mode
  • Programmable CML Output Deemphasis
  • CML Output Polarity Select
  • LOS Polarity Select
  • Programmable Masking Time for the LOS Output
  • LOS Assert/Deassert Level Adjustment
  • Choice of Rx Input-Based LOS or RSSI Monitor-Based LOS
  • 3-Wire Digital Interface Compatible with Maxim’s SFP+ Family of Products

MAX3735A 2.7Gbps, Low-Power SFP Laser Drivers

The MAX3735A is a +3.3V laser driver for SFP/SFF applications from 155Mbps up to 2.7Gbps. The de...
  • Fully Compliant with SFP and SFF-8472 MSAs
  • Programmable Modulation Current from 10mA to 60mA (DC-Coupled)
  • Programmable Modulation Current from 10mA to 85mA (AC-Coupled)
  • Programmable Bias Current from 1mA to 100mA
  • Edge Transition Times <51ps
  • 27mA (typ) Power-Supply Current
  • Multirate 155Mbps to 2.7Gbps Operation
  • Automatic Average Power Control
  • On-Chip Pullup Resistor for TX_Disable
  • 24-Pin 4mm x 4mm QFN package

MAX3735 2.7Gbps, Low-Power SFP Laser Drivers

The MAX3735A is a +3.3V laser driver for SFP/SFF applications from 155Mbps up to 2.7Gbps. The de...
  • Fully Compliant with SFP and SFF-8472 MSAs
  • Programmable Modulation Current from 10mA to 60mA (DC-Coupled)
  • Programmable Modulation Current from 10mA to 85mA (AC-Coupled)
  • Programmable Bias Current from 1mA to 100mA
  • Edge Transition Times <51ps
  • 27mA (typ) Power-Supply Current
  • Multirate 155Mbps to 2.7Gbps Operation
  • Automatic Average Power Control
  • On-Chip Pullup Resistor for TX_Disable
  • 24-Pin 4mm x 4mm QFN package

MAX3949 11.3Gbps, Low-Power, AC-Coupled Laser Driver

The MAX3949 is a 3.3V, multirate, low-power laser diode driver designed for Ethernet, Fibre Chan...
  • Low Power Consumption
  • Saves Board Space
    • Small 3mm x 3mm Package
  • Flexibility
    • Programmable Modulation Current Up to 85mA (5Ω Load)
    • Programmable Bias Current Up to 105mA
    • Programmable Input Equalization and Output Deemphasis
  • Safety
    • Supports SFF-8431 SFP+ MSA and SFF-8472 Digital Diagnostic
    • Integrated Eye Safety Features with Maskable Faults
    • Bias Current Monitor

DS4830A Optical Microcontroller

The DS4830A is a low-power, 16-bit microcontroller with a unique peripheral set supporting optic...
  • 16-Bit Low Power Microcontroller
  • Slave Communication Interface: 400kHz without Clock Stretching I2C Compatible 2-Wire or SPI
  • Master Communication Interface: 400kHz I²C-Compatible 2-Wire, SPI, or Maxim 3-Wire Laser Driver
  • Pin-Compatible with DS4830
  • 32KWords Flash Program Memory
  • 2KWords Data RAM
  • 4KWords ROM Memory
  • 32-Level Stack Memory
  • 2.85V to 3.63V Operating Voltage Range
  • 8 Independent 12-Bit Voltage DACs with 2.5V Internal Reference or External Reference
  • 10 x 16-Bit PWM Channels
    • Supports 4-Channel TECC H-Bridge Control
    • Boost/Buck DC-DC Control
    • 1MHz Switching Frequency
  • 13-Bit ADC with 26-Input Mux
    • 40ksps
    • Individual Channel Averaging Option
  • Two Independent Sample/Holds with Individual Channel Averaging Option
    • 1V Full Scale
    • 300ns Sample Time
  • Fast Temperature Measurement with Averaging Option
    • Internal Temperature Sensor, ±2°C
  • 10-Bit Fast Comparator with 16 Input Mux
  • 31 GPIO Pins
  • Internal 20MHz Oscillator
  • Up to 133MHz External Clock for PWM and Timers
  • Two 16-Bit Timers and One Programmable Watchdog Timer
  • Maskable Interrupt Sources
  • Fast Hardware CRC-8 for Packet Error Checking (PEC)
  • I2C and JTAG Bootloader
  • Four Software Interrupts
  • Supply Voltage Monitor (SVM) and Brownout Monitor
  • JTAG Port with In-System Debug and Programming
  • Low Power Consumption (16mA) with All Analog Active
  • 5mm x 5mm, 40-Pin TQFN Package

DS4830 Optical Microcontroller

The DS4830 provides a complete optical control, calibration, and monitor solution based on a low...
  • 16-Bit Low-Power Microcontroller
  • 36 kWords Total Program Memory
    • 32 kWords Flash Program Memory
    • 4 kWords ROM Program Memory
  • 1 kWords Data RAM
  • 8 DAC Channels
    • 12-Bit Buffered Voltage DACs
    • Internal or External Reference
  • 10 PWM Channels
    • Boost/Buck DC-DC Control with Support for 7-Bit to 12-Bit Resolution and 1MHz Switching Frequency
    • Supports 4-Channel TECC H-Bridge Control
  • 8-Bit Fast Comparator with 16-Input Mux
    • 1.6µs per Comparison
  • 13-Bit A/D Converter with 26-Input Mux (27ksps)
  • Temperature Measurement Analog Front-End
    • Internal Temperature Sensor, &plusnm;3°C
    • 0.0625°C Resolution
    • Supports Two External Temperature Sensors
    • Differential Rail-Rail Inputs
  • 31 GPIO Pins
  • Maskable Interrupt Sources
  • Internal 20MHz Oscillator, CPU Core Frequency 10MHz
    • 4% Accurate from 0°C to +50°C
  • Up to 133MHz External Clock for PWM and Timers
  • Slave Communication Interface: SPI or 400kHz I2C-Compatible 2-Wire
  • Master Communication Interface: SPI, 400kHz I2C-Compatible, or Maxim 3-Wire Laser Driver
  • I2C and JTAG Bootloader
  • Two 16-Bit Timers
  • 2.97V to 3.63V Operating Voltage Range
  • Brownout Monitor
  • JTAG Port with In-System Debug and Programming
  • Low Power Consumption (16mA) with All Analog Active

DS3923 High-Speed Current Mirror with Sample/Hold Output

The DS3923 high-speed current mirror integrates high-voltage devices necessary for monitoring th...
  • Accurate Burst-Mode RSSI Measurement with Two Current Mirror Outputs Improves Dynamic Range
    • -32dBm to -5dBm Optical Input Range
    • ±0.5dB Accuracy
    • Sampling Period as Short as 300ns
    • Pin Discharge Option
  • Low-Noise APD Bias with Shutdown Options Reduces Receiver Sensitivity
    • 15V to 76V APD Bias
    • External Capacitor Connection for Controlled RC Time Constant of APD Voltage Filter
    • Current Clamp with Adjustable Limit and External Shutdown with Limit Status
    • High-Voltage Switch FET for APD Fast Shutdown
  • Small Package Reduces Total Solution Size and Cost
    • 3.5mm x 3.5mm, 24-Pin TQFN Package with Exposed Pad

DS3922 High-Speed Current Mirror and Integrated FETs for DC-DC Controller

The DS3922 high-speed current mirror integrates high-voltage devices necessary for monitoring th...
  • Accurate Burst-Mode RSSI Measurement with Two Current Mirror Outputs Improves Dynamic Range
    • -32dBm to -5dBm Optical Input Range
    • ±0.5dB Accuracy
    • Sampling Period as Short as 300ns
    • Pin Discharge Option
  • Low-Noise APD Bias with Shutdown Options Reduces Receiver Sensitivity
    • 15V to 76V APD Bias
    • External Capacitor Connection for Controlled RC Time Constant of APD Voltage Filter
    • Current Clamp with Adjustable Limit and External Shutdown with Limit Status
    • High-Voltage Switch FET for APD Fast Shutdown
  • Supports Additional DC-DC Functions
    • Low-Voltage Synchronous Buck FETs for Efficient DFB Bias
    • Low-Voltage pMOSFET for Generating Negative Bias Voltage for EMLs
  • Small Package Reduces Total Solution Size and Cost
    • 3.5mm x 3.5mm, 24-Pin TQFN Package with Exposed Pad