1 Features
1• Dual CDR with 9.80-11.7 Gbps Reference-Free
Operation
• 2-Wire Digital Interface with Integrated DACs and
ADC for Control and Diagnostic Management de•
Output Polarity Select for TX and RX
• Programmable Jitter Transfer Bandwidth
• Electrical and Optical Loopback.
• CDR Bypass Mode for Low Data Rate Operation
• Integrated Modulator Driver with Output Amplitude
up to 2 VPP Single-ended and Bias Current up to
150 mA Source.
• Automatic Power Control (APC) Loop with
Selectable Monitor PD Range
• Programmable TX Input Equalizer
• TX Cross-Point Adjust and De-Emphasis
• Includes Laser Safety Features
• Integrated Limiting Amplifier with Programmable
LOS Threshold
• Adjustable RX Equalization and Input Threshold
• Programmable RX Output Voltage and Deemphasis.
• Power Supply Monitor and Temperature Sensor
• Single 2.5-V Supply
• –40°C to 100°C Operation
• Surface Mount 4 mm x 4 mm 32-Pin QFN
Package with 0.4 mm Pitch

2 Applications
• XFP and SFP+ 10 Gbps SONET OC-192 Optical
Transceivers
• XFP and SFP+ 10 GBASE-ER/ZR Optical
Transceivers

3 Description
The ONET1130EC is a 2.5 V integrated modulator
driver and limiting amplifier with transmit and receive
clock and data recovery (CDR) designed to operate
between 9.80 Gbps and 11.7 Gbps without the need
for a reference clock. Optical and electrical loopback
are included. CDR bypass mode can be used for
operation at lower data rates and a two-wire serial
interface allows digital control of the features.
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 are available to improve the optical eye
mask margin. Bias current for the laser is provided
and an integrated automatic power control (APC) loop
to compensate for variations in average optical power
over voltage, temperature and time is included.
The receive path consists of a limiting amplifier with
programmable equalization and threshold adjustment,
a multi-rate CDR and output de-emphasis to
compensate for frequency dependent loss of
connectors, microstrips or striplines connected to the output of the device, The receiver output amplitude
and loss of signal assert level can be adjusted.