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TPS7A57: NEED 8 CHANNEL DAC FOR VOLTAGE MARGINING SUPPORTING THIS LDO

Part Number: TPS7A57

We need 8 channel DAC. Kindly suggest us 8 channel DAC. Our LDO part number is TPS7A5701RTER.

As TPS7A5701R has one reference resistor for setting output voltage, need guidance in calculating series resistor. Kindly help us in calculating it.