Hi. I would like to use a VGA to drive a AD9434-500 ADC. The input signal is broadband with relevant content between 5 MHz and 250 MHz. The AD8376 datasheet describes a resistor output bias method for broadband applications. Does the ADL5202 also require resistor output biasing for broadband applications?
Since these parts are RF parts, I've moved this question to the RF Components community. Please continue the discussion here.
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The ADL5202 has a very similar open collector output structure as the AD8376; therefore it will need a resistor or inductor network to VPos depending on your signal bandwidth. Please refer to the datasheet for an explanation on how to configure the output.
Thank you for your response. Should resistor pull-ups on the outputs of the ADL5202 connect to VPOS or a voltage higher than VPOS?. (The AD8376 data sheet suggests a pull-up to a voltage higher than VPOS.)
You need 5 V at the output pins to operate correctly. To account for the voltage drop across the resistors you need to use a slightly higher supply voltage.