The CK20 is a dual channel, electronically adjustable phase shifter for clock signals up to 26 GHz.
The CK20 module provides clock shifting and splitting, high precision clock timing/sampling and clock phase modulation.
- two selectable differential inputs
- two separate phase shift channels
- octave-band operating range (12 through 26 GHz)
- continuous phase shifting (∞ times 360°)
- optional low frequency extension
- adjustable output swing
- phase detector output
- single supply voltage
The CK20 provides two independent, electronically selectable 12 through 26 GHz clock inputs. Symmetrical input buffers allow for single ended as well as differential input and provide a high sensitivity of 50 mVpp (single ended).
A clock signal is fed into two independent phase shifters, each capable of continuously shifting the phase by ∞ times 360°. For continuous forward/backward shift, the CK20 offers an event triggered input (via an optional RS232 interface) with 8 bit resolution each 360°. For high speed phase modulation up to 640 MHz, two analog phase adjustment signals can be applied, each shifting the output clock phase by 180°.
At the output, there are two 50 Ω CML buffers, each providing an adjustable differential output voltage swing between 400 and 800 mVpp.
The CK20 provides a phase detector output, showing the phase difference between both clock outputs. This provides instant access to the actual phase setting, which can be used to realize phase control functionality.
|Output Amplitude||400||–||800 (Differential)||mVpp|