ADL5380的差分阻抗写的50ohm,手册中写的负载200ohm和450ohm跟这个有什么关系，我输出为50ohm，是不是直接通过一个1：1巴伦就可以了。参考图中用9：1巴伦转的，ADL5380基带差分阻抗为50ohm，那经过巴伦变换之后岂不是变成（50/9）ohm了，因为巴伦次级接的ADL5380基带，主级接的后面负载,次级跟主级阻抗比为9：1。

I have a couple of questions regarding the ADL5380:

1. Is there any characterization available for the slew rate of the I and Q amplifier outputs

2. In the case where RFin and LO are close in frequency (seperated by 10KHz) we are noticing the outputs…

Do the adl5380 demodulator work whit RF freq at 5400MHZ and the LO freq at 5430MHz?

are the I/Q outputs valid 30 MHz outputs in this case?

tnx, Luca

ADL5380基带输出为50 ohm差分阻抗，但为什么参考电路用的是9：1的巴伦，问过支持，怎么说是什么负载是450 ohm，然后用9：1转，但是手册上的差分输出50 ohm又是什么意思，如果是50ohm，我想用个1：1的转成单端50ohm可以么。 另IQ调制时，用单端转巴伦，1：1的怎么接共模电压

i use ADL5380,but it's so easy to damage,i changed several chips ,then it can work well,

but one month later ,the output power lost more than 10dB, from -2dbm to -18dbm,

and in this situation i changed a capacitor in the RF from balun to ADL5380…

Hi,

in my adl5380 application BB I/Q max freq is 190MHz.

ADL5380 should be connected  with either a 2¨1 balun (100Ω -->50Ω)  or a 4:1 balun (200Ω-->50Ω)

A  microstrip 100Ω differential line of aproax 12cm long connects al5380 with the balun.

Balun…

I'm looking at the ADL5380 for a multi-channel receiver. Each channel would have its own ADL5380. Channel-to-channel relative phase on the ADL5380 baseband output is important.

First question: Does the ADL5380 mechanism for generating a quadrature…