# LTSpice simulation errors?

I ran this simulation in ltspice and my output voltage was -2.97V. According to my calculations I should have roughly -10V when all sources are at 5V.
$$V_{out} = -V_{in}R_5 \left ( \frac{1}{R_1} + \frac{1}{R_2}+\frac{1}{R_3}+\frac{1}{R_4}\right )$$ I tried this same circuit on partsim's online simulator and got -9.97V. Is there something missing in the LTSpice circuit?

• Did you try an ideal op-amp instead? – uint128_t May 6 '17 at 3:31