TCXO input mode on CY29430

[Anonymous]

On the CY29430 datasheet, the LF input specification is :

- VIL (Input low voltage DC coupled input) : 0.2 V max

- VIH (Input high voltage DC coupled input) :  0.8 min to 1.2 V max

And on the DC specification :

VIN Input voltage level All input, relative to GND : –0.5 min  to 3.8 V max

Does it mean that the TCXO shouldn't deliver more than 1.2V or is it possible to connect à 3.3V TCXO ?

Best regards,

F. ROLET

[PradiptaB_11 · Accepted solution]

Hi F.Rolet,

The TCXO spec is defined on page 13 of the datasheet. It is recommended that 1.2 V should me the max value and that the TCXO should not deliver more than that.

It is possible to connect a 3.3 V TCXO but we generally do not recommend that.

Thanks and regards,

Pradipta.