I'm designing a circuit to use an IF amplifier, specifically the ADL5536, to amplify the signal of an SiPM array consisting of the MicroFJ-60035 TSV SiPM by SensL. My goal is to use this amplifier to boost the output of a multiplexed array of SiPMs. However, this is my first time using an IF amplifier like this, so I was wondering why is the recommended layout different than a standard op-amp? Usually, with op-amps, you have a positive and negative voltage. However, according to the datasheet of the ADL5536, you only have a +5V power source that goes through a bias inductor, and there is no negative power source. Why is this layout necessary, and how is working with an IF amplifier different than a regular op-amp?
Because it's not a standard op-amp.
It's basically an output device, with a bit of bias to keep it happy, which drives straight into the output line. There's no negative power supply as it's been designed to be used without.
For efficiency, the high current required is supplied through an external inductor. There's no way an inductor of the required size could be placed on chip.
With specified operation to 1GHz, and gain well beyond that, you'd better follow the data sheet recommendations exactly, unless you know exactly what you're doing.