Analogue, Mixed Signal, LSI


Broadband time delay

2 May 2012 Analogue, Mixed Signal, LSI

Hittite’s new HMC911LC4B time delay is ideal for 10G, 40G


RZ-DQPSK, 100G DWDM RZ Carver clock chain and skew adjustments in the fibre-optic domain. It is a DC to 24 GHz product that provides a continuously variable delay from 0 ps to 70 ps while maintaining a constant differential output voltage swing. The device accepts either single-ended or differential input data, while the differential output swing is adjustable from 150 mVp-p to 800 mVp-p. The modulation bandwidth is 1,6 GHz. Suitable for both clock and data retiming applications, the HMC911LC4B features internal temperature compensation and bias circuitry to minimise delay variations with temperature. All RF inputs and outputs are internally terminated with 50 Ohms to VCC, and may either be AC or DC coupled.



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