Our customer has a question for AD8351.

A calculated Av(dB) value does not match GAIN(dB) on the figure 38.

This calculated Av(dB) is used for the part of "GAIN ADJUSTMENT" of page12 on the data sheet.

For example, a calculated Av…

### Q

the figure 40 in the datasheet of AD9245  is similar with the EVB (schematic in
figure 49,50).  The output common-mode voltage of the AD8351 is set to AVDD/2
(VAMP/2 in EVB), AV coupling with AD9245. In the EVB schematic the VIN+ and
VIN- are set…

Hello, I'm trying to find S-parameters for the AD8351. There is an old post on this topic (see https://ez.analog.com/rf/f/q-a/76076/question-re-ad8343-s-parameter-data/234351#234351) which states "My apologies for the long wait on the S-parameter…

I would like to use the AD8351 as a variable gain amplifier for a differential signal to an ADC with a differential input. The data sheet gives an equation for the voltage gain, Av, based on Rg and Rl. However, the example circuits for driving an ADC…

• ### AD8351 input / output common voltage range ?

Hi all,

we are confused about input / output common voltage & input / output range !

Please let me know, which is correct.

In the datasheet, following is it.

specifications

INPUT/OUTPUT CHARACTERISTICS
Input Common-Mode Voltage Adjustment Range 1…

The load resistor affects the gain as well.  Make sure you are using the same load resistor as the datasheet in order to get the same frequency response.

• ### AD8351 single-end input BW

Hi

I'm  prototyping with a single-ended circuit configuration (Datasheet P 14 Fig. 41) using the evaluation board of the AD8351.
Although a differential output is measured by inputting a 1Vpp sinusoidal wave (50 kHz to 200 MHz), the amplitudes of Hi…

• ### RE: Questions regarding AD8351: Is there a spice model?

This question has been closed by the EZ team and is assumed answered.
• ### AD8351 Vocm unstable issue

Dear Specialists,

Sorry to trouble you. We now use AD8351 just as below shows, Vocm tie to GND through 0.1uF capacitor.

The normal value of Vocm=1.65v as Vcc is 3.3v. But when input pulse signal(have risk coupling low interfering signal), sometimes…