There is a typo error at DAC Modulator Filter components at ADL5373, ADL5374(Fig32,34), and ADL5375(Fig 60, 63).
C1I and CIQ should be at pF not nF. So they are 53.62pF and filter performance is as shown at datasheet(Fig33 at ADL5373/4, Fig61at ADL5375…
Q.
Could you please tell me how we test the P1dB of an IQ Modulator like the ADL5375 or ADL5370/1/2/3/4? Since the P1dB is so high, how do you apply a baseband signal of such a high high level?
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Q.
What is the Thermal Resistance of LFCSP packages used in ADL5370/1/2/3/4/5 Modulators?
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A.
Thermal Resistance, expressed in °C…
Q.
I want to use the Auxiliary DACs of the AD9779A to compensate away the LO Leakage of an IQ Modulator. I am using the recommended schematic from the data sheet of the ADL5370/1/2/3/4 family of IQ Modulators. What resistor tolerance should I choose…
| HMC928 |
| HMC929 |
| HMC931 |
| HMC932 |
| HMC933 |
| HMC934 |
| HMC935 |
| HMC247G |
| HMC538 |
| HMC-C018G |
| HMC-C025G |
| HMC-C053G |
| HMC-C584G |
| HMC7056G |
| HMC7054G |
| HMC7053G |
| HMC7056AG |
| HMC642G |
| HMC642AG |
| HMC643G |
| HMC644AG |
| HMC647 |
| HMC647A |
Question: In the attached plot (labeled Figure 10) from the ADL5375 IQ Modulator Datasheet, LO Leakage degrades significantly vs. temperature at higher frequencies after compensation at 25 degC. What is going on here?
Answer: It is important to understand…
It is good to hear that the output power of ADL5385 is now normal. In terms of EVM, please check LO Leakge level which is also related to EVM performance. If possible, you can get better EVM by nulling LO Leakage level. Refer attached file for correcting…
Hi Matthias,
Thanks for your answer, it was very detailed and most helpful. I'd come to the same conclusiion that I and Q outputs are fixed at 90-deg and no trimming is possible although I was hoping I'd missed something in the DDS datasheet. It does…
The phase noise at the output of and IQ modulator comes mainly from the Local Oscillator input and from the LO path inside the IQ Modulator. As you can see below, the phase noise of local oscillator signal spreads the desired signal. So if you want to…
Share ADI Chinese reference circuit good information, welcome to download exchange _01 by onlookers on the road
Share ADI Chinese reference circuit good information, welcome to download exchange _01
