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.