OPA2836: Need to design Differential amplifier with q current less than 1mA.

Part Number: OPA2836

Hi, 

I am designing the difrential amplifier using opamp upto 2.5MHz. But opamp due to multiple stage  quiescent current is increses. I need to achieve less than 1mA current. So is that possible we can use instrument opamp IC. Please suggest. Design requirement is mentioned below:-

1) difrential signal is coming 300mVpp and due to this signal we need to amplify with hysterisys and generate clean PWM which is sync with input if input have 2.5MHz then output of pwm is also 2.5Mhz.

Regards,

Manoj Kumar