Question asked by Terumasa on Sep 8, 2014
Latest reply on Nov 10, 2014 by DougI

Hello

We check power consumption of AD9237-40 both power scaling enable and disable .
Datasheet figure 43 and 44 describle only power consumption by 10MSPS at power scaling disable and enable.

Question 1
We think that power consumption of AD9237-40 (6MSPS) is about 90mW from figure 43.
Is it correct ?

Question 2
In Figure 44,slope of power consumption is varied by product name (samplng rate)

If we use AD9237-40 at 6MSPS, should we look not slope of AD9237-40 but slope of AD9237-20 at figure 44?

Could you give me advice about power consumption when we use below condtion ?

If we use slope of AD9237-40, we think that  power consumption is about 50~60mW from figure 44.
If we use slope of AD9237-20, we think that  powe consumption is about 65~70mW from figure 44.
Is is correct ?

Operated Condition
Power supply: 3V
MODE2 pin = 2/3 AVDD (Span factor:1, Power scaling: enabled) or MODE2 pin =AVDD (Span factor:1, Power scaling: disbled)
6MSPS

If there is any question, please let me know it.

Regards,

Terumasa