ASNT2113_EV

High-Speed Burst-Mode CDR Filter

Recoverable clock frequency range is from 6GHz to 30GHz
Input data up to 30Gbps
Short synchronization time
50% duty cycle of the output clock
Adjustable phase of output clock
Single negative -3.3V supply
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Data Sheet Request Quote
Frequency (min): 6GHz / 6 Gbps
Frequency (max): 30GHz / 30 Gbps
Power: 5540 mW
Package: Board
Price: Request

Product Details

ASNT2113_EV desc

Fig. 1 Functional Block Diagram

This board is now considered obsolete.

The ASNT2113_EV Burst-Mode CDR Filter is a narrow-band CDR for testing, prototyping, and communication applications. It is designed to work with an external narrow band-pass amplifier, and filter to recover the clock frequency.  There are two single-ended inputs: the input data signal, and the recovered clock which is fed back to the board through an external band-pass Amplifier and Filter. There are two differential outputs: the multiplied double-rate data, and the retimed input data. All inputs and outputs are DC-coupled CML-type signals. High-speed Southwest connectors are installed for all inputs and outputs. The polarity of the retimed output signal can be reversed through an SMA connector. Phase shifters can be controlled manually via on-board potentiometers. Power is supplied through a two–pin MOLEX connector.

The input data signal is amplified and split into three paths via ASNT5136 and ASNT5121. The data signal’s delay is then adjusted by two phase shifters ASNT5101 to double its frequency in the XOR gate ASNT5140. An additional phase shifter ASNT5102 is placed after the XOR gate. Then, the output signal is amplified and band-pass filtered off the board to isolate the highest harmonic component. The isolated harmonic is used as the recovered clock to retime the input data signal in the D-Type Flip-Flop ASNT5012. The synchronization time of this system is less than 2ns.