AD9957 current source temp coefficient


I am about to use the AD9957 in QDUC mode. An important parameter does not seem to appear in the chip's datasheet.

What is the temperature coefficient of the output DAC current source ? I mean, typically a 10k resistor programs a 20 mA full scale output. If this resitor is ideal, what would be the 20 mA variation over, say, a -10 to +70 °C temp range ?

Thanks in advance for your answer(s).