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How to improve the PSRR of a Bandgap?

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heng155

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The PSRR of my Bandgap is poor.
AC:It is about 60db at low frequency. When noise is higher than 10KHz, the PSRR value qiuckly rolls down. And it reaches 0 at about 40MHz.
Transient: 30mV supply noise got 80mV output noise!!!:cry:
My schm. is attached.
And the Op-amp's Gain is 76dB and roll down at 20kHz.
How can I get a higher PSRR?
Thanx![/img]
 

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