56Gbps – Single Channel PAM4
VCSEL Driver
HXT14100
Short-Form Datasheet
Description
Features
The HXT14100 is a single channel, low power,
Linear PAM4 VCSEL driver for SR optical
applications that supports signaling rates up to
28GBuad 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.
• 230mW per channel Power Dissipation typical
• Supports up to: IMOD = 12mAPP & 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
The HXT14100 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.
• Laser Disable for IMOD and IBIAS
• Integrated OTP for calibration
Typical Applications
• 2-wire interface control
• SFP56 Ethernet modules for datacenter
applications
• 50G Ethernet SR AOC
• Fiber Channel modules
• Infiniband EDR optical modules
Ordering Information
Part
Temp Range
-5°C to +95°C
Room Temp
Dimensions
Bare Die: 1350 x 1120μm
Evaluation Board
HXT14100-DNU1
HXT14100-TNU2
HXT14100-EVB
Notes: Product Shipping Carrier Type: 1 – Waffle Pack; 2 – Blue Tape
For price, delivery schedules, and to place orders, please contact IDT: www.IDT.com/go/sales
© 2017 Integrated Device Technology, Inc.
1
December 13, 2017