I am using MCP3202 which does not have Vref as independent input. The datasheet states that the current consumption is:
550 μA max. active current at 5V
Can I use a voltage reference (Series) like LT1460 to power it?
LT1460 can provide upto 20mA as stated in the datasheet.
The reference will supply up to 20mA with excellent line regulation characteristics