Overview

The HXT14400 is a quad-channel, low power, Linear PAM4 VCSEL driver for SR optical applications that supports signaling rates up to 28Gbaud or 56Gbps PAM4. In conjunction with an individual DFB laser diode, the device handles the complete digital-to-optical conversion, including CML input with equalization, laser driver, drive control and supervision. The HXT14400 also integrates a number of functions required for Automatic Power Control (APC), as well as internal and module temperature measurements and reporting. Using the included RSSI input, the module receive optical power can also be measured and reported. Designed for direct DC-coupled die in TOSA applications with a small number of additional components for cost-effective and compact assemblies. Available in die form.

HXT14400 - Block Diagram
HXT14400 - Block Diagram
  • 230mW per channel power dissipation typical
  • Supports up to: IMOD = 12mAPP and IBIAS = 12mA with VCC = 3.3V
  • Integrated 12-bit ADC with 6 channel analog multiplexor front-end
  • Programmable 8-bit Laser Modulation and Bias current control
  • Integrated Bias Monitor, Transmit and Receive Power Monitor capability
  • Automatic Power Control (APC)
  • Programmable input LOS and squelch function with disable, transmit disable, and transmit fault indication
  • Programmable input CTLE equalization
  • Integrated temperature sensor and input for external module temperature sensor
  • Interrupts with user selectable mask control
  • Input polarity inversion
  • Laser disable for IMOD and IBIAS
  • Integrated OTP for calibration
  • 2-wire interface control

Documentation

= Featured Documentation
Type Title Date
Datasheet - Short-form
HXT14400 Short Form Datasheet
PDF 226 KB
Datasheet
HXT14400 Datasheet
Log in to Download PDF 1.38 MB
Product Change Notice
PCN# : 210015 Change of Waffle Pack Label Display
PDF 134 KB
3 items

Design & Development

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

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Product Options

    Processing table
    Pkg. Type
    Temp. Grade
    Carrier Type
    Price (USD) | 1ku
    Buy / Sample
    Part Number
    HXT14400-1-DNU
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    Samples Available
    		 WAFER E WFP 123.87 Get Samples,
    HXT14400-EVB
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    Samples Available
    		 BOARD C Box Get Samples,
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