Customer video process output clk is a triangle wave, we want reshape that to square wave, Does CDCS503 can do that or suggest other part(frequency about 50Mhz)?
Hi Robin,
what is the triangle-wave amplitude? Slew rate is in this case a key parameter.
Thanks and best regards,
Leandro
If slew rate is a concern, there are some high-speed comparators with internal hysteresis to ensure clean switching even with low input slew rates. Hysteresis adjustment may also be achieved with external components.
LMV7219 might be a good option since it has a CMOS-compatible output, but below are a few other high-speed comparators to consider.
Regards,
Alan
triangle -wave amplitude is 3V.
following is the application detail:
use DS90UR241, DS90UR124 for after market infotainment , sometime DS90UR124 unlock, video source clk output is a triangle-wave, we think re-shape clk to square-wave, that will helpful for DS90UR124 lock.
If the video source clock to the Serializer is a 3V triangle wave, then its transition times will be several times higher than the nominal TCLK input transition time of 2.5 ns. Does changing the TX clock edge select (TRFB) input pin state (L to H, or H to L) to resolve the loss of lock?
If not, I suggest trying the LMV7219 comparator to convert the triangle wave to a square wave with 3.3V LVCMOS levels to drive the TCLK input. It may also be good to verify that the new square wave output meets the TCLK input jitter max requirement. If not, an external PLL may be needed to clean up the jitter on the video source clock.
Hi Jeff,
thank you for providing information about the triangle amplitude and application. The CDCS503 can accept such an input signal since it has an input hysteresis voltage of 150mV (min) which makes the device robust from the noise point of view. The driving strength of the CDCS503 generates sharp output square signal with a typical rise time 0.75ns.