Electronic Design

Modeling on Mondays: GAP/R K2-W Vacuum-Tube Op Amp SPICE Modeled Performance (Part 5)

Part 5 provides spec summary of the GP/R K2-W vacuum-tube op amp and discusses measurement constraints/conditions and LTspice modeled output. The K2-W vacuum-tube op ...
Electronic Design

The GAP/R K2-W Vacuum-Tube Op Amp in SPICE (Part 4): LTspice Files

As a service to our readers, we're providing the LTspice files used in Dr. Dyer's article on simulation of the 12AX7 and the K2-W vacuum-tube op amp. 1. The model for the K2-W is established as a ...
EDN

Designing with a complete simulation test bench for op amps, Part 4: Noise

Previous installments of this article series discussed the need to verify SPICE model accuracy and how to measure the output impedance, small-signal bandwidth, and input-referred errors of operational ...
EDN

Designing with a complete simulation test bench for op amps, Part 2: Small-signal bandwidth

The first installment of this article series discussed the need to verify SPICE model accuracy and how to measure the open- and closed-loop small-signal AC output impedance of operational amplifier ...