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DAC3484: Image frequency rejection is different

Part Number: DAC3484

Hi team,

Use A and B channels as the IQ signal of one RF and the C and D channels as the IQ signal of another RF. Where the RF image rejection for the a and B channels is normal (approximately 3,40 dBc), and the RF image power for the C and D channels is almost equal to the main frequency power. The customer would like to know if this is expected? Thanks.

Best,

Cherry