111 lines
2.2 KiB
Plaintext
111 lines
2.2 KiB
Plaintext
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v {xschem version=3.4.6RC file_version=1.2
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}
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G {}
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K {}
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V {}
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S {}
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E {}
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B 2 840 -900 1640 -500 {flags=graph
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y1=0
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y2=6
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ypos1=0
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ypos2=2
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divy=5
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subdivy=1
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unity=1
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x1=0
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x2=6
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divx=5
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subdivx=1
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xlabmag=1.0
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ylabmag=1.0
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node="b
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a"
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color="6 4"
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dataset=-1
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unitx=1
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logx=0
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logy=0
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}
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B 2 840 -500 1640 -100 {flags=graph
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y1=-30
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y2=30
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ypos1=0
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ypos2=2
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divy=5
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subdivy=1
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unity=1
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x1=0
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x2=6
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divx=5
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subdivx=1
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xlabmag=1.0
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ylabmag=1.0
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node=z
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color=7
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dataset=-1
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unitx=1
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logx=0
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logy=0
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}
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P 4 5 140 -620 140 -870 710 -870 710 -620 140 -620 {}
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P 4 7 410 -620 410 -560 420 -560 410 -540 400 -560 410 -560 410 -620 {}
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T {// importing libs
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`include "discipline.h"
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module diff_amp(
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output electrical out,
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input electrical in1,
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input electrical in2);
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parameter real gain = 10; // setting gain to 10 of the differential amplifier
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analog begin
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V(out) <+ gain * (V(in1, in2));
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// V(out) <+ 2 * atan( gain / 2 * V(in1, in2) );
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end
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endmodule} 150 -860 0 0 0.2 0.2 {font=monospace}
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T {create a diff_amp.va file with following code
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and compile it into a .osdi file with openvaf.} 190 -930 0 0 0.4 0.4 {}
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N 180 -450 320 -450 {lab=B}
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N 80 -530 320 -530 {lab=A}
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N 520 -490 640 -490 {lab=Z}
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N 60 -290 180 -290 {lab=0}
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N 180 -330 180 -290 {lab=0}
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N 80 -330 80 -290 {lab=0}
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N 80 -530 80 -390 {lab=A}
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N 180 -450 180 -390 {lab=B}
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C {diff_amp.sym} 420 -490 0 0 {name=U1}
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C {lab_pin.sym} 640 -490 0 1 {name=p1 sig_type=std_logic lab=Z}
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C {lab_pin.sym} 80 -530 0 0 {name=p2 sig_type=std_logic lab=A}
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C {lab_pin.sym} 180 -450 0 0 {name=p3 sig_type=std_logic lab=B}
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C {vsource.sym} 80 -360 0 0 {name=V1 value=3.1 savecurrent=false}
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C {vsource.sym} 180 -360 0 0 {name=V2 value=3 savecurrent=false}
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C {lab_pin.sym} 60 -290 0 0 {name=p4 sig_type=std_logic lab=0}
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C {code_shown.sym} 240 -320 0 0 {name=COMMANDS only_toplevel=false value="
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.options savecurrents
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.control
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save all
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op
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remzerovec
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write tb_diff_amp.raw
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dc V1 0 6 0.01
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set appendwrite
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remzerovec
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write tb_diff_amp.raw
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quit 0
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.endc
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"}
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C {launcher.sym} 670 -120 0 0 {name=h5
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descr="load waves"
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tclcommand="xschem raw_read $netlist_dir/tb_diff_amp.raw dc"
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}
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C {title.sym} 160 -30 0 0 {name=l1 author="Phillip Baade-Pedersen"}
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C {launcher.sym} 670 -170 0 0 {name=h1
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descr="OP annotate"
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tclcommand="xschem annotate_op"
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}
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