BUF04 Buffer Amplifier Unity-Gain Load Driver

Application

This circuit uses the BUF04 as a unity-gain buffer between a small DC signal source and a 10 k load. It is a practical starting point for buffering a measurement node before driving another stage.

Design Context

VIN applies 0.5 V to the non-inverting input. VCC and VEE provide +/-15 V rails, and RLOAD represents the next circuit stage or measurement load. The input and output probes make it easy to compare the signal before and after the buffer.

Expected Behavior

The operating point table should show Vout closely following Vin while the load is driven from the BUF04 output instead of directly from the signal source.

Key Values

• VIN is 0.5 V.
• VCC is +15 V and VEE is -15 V.
• RLOAD is 10 k.

Suggested Experiments

• Change VIN and confirm Vout tracks the input within the normal output swing.
• Reduce RLOAD to see how a heavier load changes output current demand.
• Compare Vin and Vout in the operating point table.

Featured Component

The BUF04 Buffer Amplifier is a unity-gain buffer macro-model with a high-impedance input and a low-impedance output for isolating signal sources from downstream loads.