PSRR circuit connection for Bandgap

[nxing]

PSRR for Bandgap

Hello eveyone,

Is that PSRR an important specs for Bandgap? Say I will use it for the ADC with clock rate of 80MHz. If yes, what's the requirement for it generally?

Thanks!

 

[kyrandia]

Re: PSRR for Bandgap

Surely, PSRR is an important characteristic of bandgap. The PSRR requirement is decided by the ADC resolution.

 

[avinash]

Re: PSRR for Bandgap

since high PSRR rejects noise from the supply voltages,it is surely important for bandgap.

 

[ambreesh]

Re: PSRR for Bandgap

Your bandgap noise is very critical.

 

[fashion]

PSRR for Bandgap

For bandgap the PSRR is very important, it will influence your accurate of reference voltage.

 

[sisching]

PSRR for Bandgap

Of course PSRR is very very important parameter for the bandgap reference. In normal cause, it should be at least less than -20dB.

 

[ambreesh]

Re: PSRR for Bandgap

At what frequency should your PSRR be -20dB
If your BGR is reference to an ADC working at 40MHz, what should be your PSRR at 40 MHz for the BGR

 

[paladinzlp]

PSRR for Bandgap

Your BGR's PSRR should high when the frequency is
1 ~ 80M !

 

[xwcwc1234]

Re: PSRR for Bandgap

How to design a high PSRR bandgap reference ?