Products > Integrated Circuits (ICs) > Audio ICs > ONET1131ECRSMR
  • ONET1131ECRSMR 1
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Externally Modulated Laser Driver With Integrated Clock and Data Recovery (CDR)

Manufacturer :
Texas Instruments, Inc
Package/Case :
Product Categories :
Audio Special Purpose
RoHs Status:
Lead free / RoHS Compliant
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ONET1131ECRSMR Product Details

The ONET1131ECRSMR is a 2.5-V EML modulator driver with transmit clock and data recovery (CDR) designed to operate between 9.8 Gbps and 11.7 Gbps without the need for a reference clock. CDR bypass mode can be used for operation at lower data rates and a two-wire serial interface allows digital control of features like output polarity select and input equalization.

The transmit path consists of an adjustable input equalizer for equalization of up to 300 mm (12 inches) of microstrip or stripline transmission line of FR4 printed circuit boards, a multi-rate CDR and an output modulator driver. Output waveform control, in the form of cross-point adjustment and de-emphasis, is available to improve the optical eye mask margin. The device provides bias current for the laser and an integrated automatic power control (APC) loop to compensate for variations in average optical power over voltage, temperature and time.

The ONET1131ECRSMR contains internal analog to digital and digital to analog converters to support transceiver management and eliminate the need for special purpose microcontrollers.


  • Modulator Driver with Minimum Output Amplitude up to 2 Vpp Single-Ended and Bias Current up to 150 mA Source
  • Supports Externally Modulated Lasers Including the Electro-Absorption Modulator Lasers (EML) and the Mach-Zahnder Modulator (MZM) Based lasers
  • Integrated CDR with 9.80 – 11.7 Gbps Reference-Free Operation
  • Two-Wire Digital Interface with Integrated DACs and ADC for Control and Diagnostic Management
  • Output Polarity Select
  • Programmable Jitter Transfer Bandwidth to Adjust CDR Bandwidth
  • CDR Bypass Mode for Low Data Rate Operation
  • Automatic Power Control (APC) Loop with Selectable Monitor PD Range
  • Programmable Transmit Input Equalizer
  • Transmitter Cross-Point Adjust and De-Emphasis
  • Includes Laser Safety
  • Power Supply Monitor and Temperature Sensor
  • Single 2.5 V Supply
  • –40°C to 100°C Operation
  • Surface Mount 4 mm × 4 mm 32-Pin QFN Package with 0.4 mm Pitch

ONET1131ECRSMR Block Diagram
(Picture: Diagram)

Technical Parameters

Function Modulator Voltage Supply 2.37V ~ 2.63V
Applications Driver Operating Temperature -40??C ~ 100??C (TA)
Number of Channels 2 Package / Case 32-VFQFN Exposed Pad
Interface I2C Supplier Device Package 32-VQFN (4x4)

ONET1131ECRSMR Documents

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Texas Instruments Incorporated designs and manufactures analog technologies, digital signal processing (DSP) and microcontroller (MCU) semiconductors. TI is a leader in semiconductor solutions for ana...
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