In the data sheet for AD5545/AD5555 (rev. I), in the figure 22, there is a voltage regulator ADR03 connected by VIN to VREF of AD5545/AD5555. Is it an error? Or, maybe, there is some sense in this connection?
And, BTW, another question about this scheme…
Hi. I am AD5546 DAC for output 36 KHz Sine wave. I am using this in four quadrant mode with ADR03 reference in line with data sheet. I have conversion frequency of 1152 KHz. So 32 samples per cycle. But its harmonics performance is poor, just 30 dBc.…
Hi.
I am also evaluating this DAC for outputs 36 KHz Sine wave. I am using this in four quadrant mode with ADR03 reference in line with data sheet. I have conversion frequency of 1152 KHz. So 32 samples per cycle. But its harmonics performance is poor…
LT1460 |
LTC1258 |
LT1021 |
LT1027 |
LTC1798 |
RH1021-10 |
RH1021-5 |
RH1021-7 |
LT6660 |
LH0070 |
LTC6655 |
AD2700 |
AD2702 |
AD584S |
REF01S |
REF05S |
REF10S |
REF43S |
REF02S |
AD1582 |
AD1583 |
AD1584 |
AD1585 |
LT1019 |
LT1236 |
LTC6652 |
REF02… |
运放理论上采用单电源就可以,但是如果需要达到0V的电源轨,就需要运放采用负电源,
运放建议采用AD8628,ADR03运放是合适的
运放电源使用正负4.5V,AD5445可以使用3.3V
Miguel, can you explain the level shifting (voltage inversion) done by the 1st stage opamp (Figure 47 on the datasheet)?. How does the inversion by virtue of virtual GND work? I still find it unusual tying ADR03's GND to the opamp’s output
Thank you Mark and KenK for your suggestions. AD5546 may be the suitable part that I need but I have some doubts being a beginner in using DACs.
1. What is meant by quadrant of a DAC?
2. In my application most probably I need to use AD5546 in "…