Version 4 SHEET 1 880 680 WIRE 192 -96 96 -96 WIRE 320 -96 256 -96 WIRE 96 0 96 -96 WIRE 176 0 96 0 WIRE 320 0 320 -96 WIRE 320 0 256 0 WIRE 224 96 208 96 WIRE 208 144 208 96 WIRE -416 160 -432 160 WIRE -288 160 -304 160 WIRE -48 160 -96 160 WIRE 96 160 96 0 WIRE 96 160 32 160 WIRE 176 160 96 160 WIRE 320 176 320 0 WIRE 320 176 240 176 WIRE 352 176 320 176 WIRE -432 192 -432 160 WIRE -304 192 -304 160 WIRE 112 192 96 192 WIRE 176 192 112 192 WIRE -96 208 -96 160 WIRE 96 208 96 192 WIRE 208 272 208 208 WIRE 224 272 208 272 WIRE -432 304 -432 272 WIRE -304 304 -304 272 WIRE -96 304 -96 272 WIRE 96 304 96 288 FLAG -96 304 0 FLAG 208 96 +15V FLAG 208 272 -15V FLAG 96 304 0 FLAG 352 176 out IOPIN 352 176 Out FLAG 112 192 in FLAG -416 160 +15V FLAG -288 160 -15V FLAG -432 304 0 FLAG -304 304 0 SYMBOL cap -112 208 R0 SYMATTR InstName C1 SYMATTR Value 1µ SYMATTR SpiceLine V=50 Irms=0 Rser=0.008 MTBF=0 Lser=0 mfg="TDK" pn="C3225X7RlHlO5M" type="X7R" ppPkg=1 SYMBOL res 48 144 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R1 SYMATTR Value 1K SYMATTR SpiceLine tol=1 pwr=0.1 SYMBOL voltage 96 192 M0 WINDOW 0 35 36 Left 0 WINDOW 123 24 102 Left 0 WINDOW 39 24 130 Left 0 SYMATTR InstName V1 SYMATTR Value2 AC 1 SYMATTR Value "" SYMBOL cap 256 -112 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName C2 SYMATTR Value 10nF SYMATTR SpiceLine V=50 Irms=0 Rser=0.008 MTBF=0 Lser=0 mfg="TDK" pn="C3225X7RlHlO5M" type="X7R" ppPkg=1 SYMBOL res 160 16 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R2 SYMATTR Value 100K SYMATTR SpiceLine tol=1 pwr=0.1 SYMBOL voltage -432 176 M0 WINDOW 0 35 36 Left 0 WINDOW 3 35 64 Left 0 WINDOW 123 24 102 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V2 SYMATTR Value 15 SYMBOL voltage -304 176 M0 WINDOW 0 35 36 Left 0 WINDOW 3 35 64 Left 0 WINDOW 123 24 102 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V3 SYMATTR Value -15 SYMBOL Robertugo\\OPAMP5 208 112 R0 SYMATTR InstName U1 SYMATTR SpiceModel 1pole TEXT -496 -104 Left 0 !.ac dec 100 1 100meg TEXT -496 -200 Left 0 ;Example 7.2 ( Page283)\nCalculate NEB( noise equivalent bandwidth)\nOp-amp GBP = 1MHz TEXT -496 -56 Left 0 !.MEAS AC peak MAX V(out)\n.MEAS AC NEB INTEG V(out)*V(out)/(peak*peak) TEXT -496 -408 Left 0 ;Use View -> SPICE Error Log to see the result of the NEB calculation.\n \nSecond method:\n1. Plot V(out) and click on the label to activate the cursor.\n2. Keep your cursor over the label V(out) and press the CTRL-LeftMouseButton\n3. You will get a window with "Power BW" which is the same as NEB.