The HXT14150 is a single-channel, low-power, Linear PAM4 VCSEL driver with built in clock and data recovery unit for SR optical applications that supports signaling rates up to 28GBuad or 56Gbps PAM4. In conjunction with an individual VCSEL laser diode, the device handles the complete digital-to-optical conversion, including CML input with equalization, laser driver, drive control, and supervision.

The HXT14150 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 or COB applications with a small number of additional components for cost-effective and compact assemblies. Available in die form.

Key Features

  • 275 mWper channel PDISS if configured for:
    • IMOD = 5mAPP, IBIAS = 5mA
  • Supports up to: IMOD = 15mAPP & IBIAS = 15mA with VCC = 3.3V
  • Integrated 12-bit ADC with 6-channel analog multiplexor front-end
  • Integrated Clock and Data recovery unit
  • Programmable 8-bit IMOD and 10-bit IBIAS 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
  • Adaptive linear equalizer and decision-feedback equalizer (DFE) to cover up to 20 dB lossy channel in CDR unit
  • On-chip testability; EOM, JTOL, PRBS generator/checker, local/remote loopback by integrating CDR unit
  • Integrated Temperature Sensor and input for external module temperature sensor
  • Interrupts with user-selectable Mask control
  • Input and Ouput Polarity Inversion
  • Graycode encoder/decoder
  • Programmable TX test pattern generation
  • Laser Disable for IMOD and IBIAS
  • Integrated OTP for calibration
  • 2-wire interface control

Applications List

  • Up to 100M SFP56 Ethernet modules for datacenter applications
  • Fiber Channel, InfiniBand Modules
  • 50G Ethernet SR4
  • Host side ingress and egress for CEI-56G-VSR; CEI-56G-MR

Ordering Information

PartTemp RangeDimensions
HXT14150-DNU (Waffle Pack)-40°C to +95°CBare Die Design Size: TBD; Nominal Die Size: Target: TBD
HXT14150-TNU (Blue Tape)-40°C to +95°CBare Die Design Size: TBD; Nominal Die Size: Target: TBD
HXT14150EVBRoom TempEvaluation Board