Optical Microcontroller

Advanced Optical µC Enables High-Performance MSA-Compliant SFP+, QSFP+, and PON-OLT Transceivers

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The DS4830A is a low-power, 16-bit microcontroller with a unique peripheral set supporting optical applications that require high-resolution conversion of many analog signals and digital signal processing (DSP) of those signals, high-speed data communication to an external host, and ultra-low power dissipation. A wide variety of optical transceiver controller applications is supported without need of external circuitry, thereby minimizing cost and PCB area.

Power dissipation and throughput are optimized through the use of a programmable round-robin analog-to-digital converter (ADC) and 10-bit fast comparator, which operate completely independently of the core and significantly relieve core overhead. A dual multiply/accumulate (MAC) is included to minimize interrupt service timing/design complexity. Ten 16-bit PWM channels are included to provide an unprecedented level of precision in digital power-control applications.

The DS4830A provides a complete optical control, calibration, and monitor solution compatible with SFF-8472. Additional resources include a fast/accurate ADC, fast comparators with an internal comparison digital-to-analog converter (DAC), eight independent 12-bit DACs, an accurate internal temperature sensor, two fast sample/holds with various programmable options, and a multiprotocol serial master/slave interface. An independent, 400kHz-compliant, slave I2C interface with four configurable slave addresses facilitates communication to a host, in addition to password-protected in-system programming of the on-chip flash.

Extensive design-in and applications support are available, including comprehensive user’s and programmer’s guides, complete reference designs with documented code, and in-depth application notes showing numerous code examples in both C and assembly language. Firmware development is supported by third-party vendors.
DS4830A: Typical Operating Circuit DS4830A: Typical Operating Circuit Enlarge+

Key Features

  • 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


  • Optical Transceivers: XFP, SFP, SFP+, QSFP+, CSFP, 40G, 100G
  • PON Diplexers and Triplexers: GPON, 10GEPON, XPON OLT, ONU

See parametric specs for Fiber Monitoring and Control (14)

Part NumberADCsResolution
DACs/ ResistorsFS Out
StepsTemp. SensorMemoryVSUPPLY
Control InterfacePackage/PinsBudgetary
See Notes
DS4830A 18-Input Muxable13
2 DACs
8 DACs
NoneNoneInternalProgram3.0 to 3.6
JTAG Bootloader
$3.15 @1k

See parametric specs for Microcontrollers (57)

Part NumberMCU CoreCore Clock Speed
Data ProcessingInternal Flash
Internal SRAM
SPI BusI2C BusGPIO PinsPWMTimer FeaturesPackage/Pins
DS4830A MAXQ201016-bit32121 Master, 1 Slave3110Brownout Monitor

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
Product Reliability Reports: DS4830A.pdf 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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