AD9630 High-Speed Buffer Load Driver

Application

This circuit uses the AD9630 as a unity-gain buffer between a low-level analog source and a 1K output load.

Schematic Organization

VIN drives the AD9630 input on the left, the buffered output drives RLOAD on the right, and VCC/VEE provide +/-5 V rails. The VIN source, VOUT node, and RLOAD are arranged left-to-right so the input-to-output relationship is clear.

Expected Behavior

With VIN set to 0.2 V, VOUT should settle close to 0.2 V while sourcing the load current demanded by RLOAD.

Suggested Experiments

• Change VIN between -0.5 V and 0.5 V and compare Vin and Vout.
• Reduce RLOAD to inspect output loading.
• Change the VCC and VEE values together to see how supply headroom affects the operating point.

Featured Component

AD9630 is the featured buffer amplifier macro-model. The demo focuses on its four essential terminals: input, output, positive supply, and negative supply.