From 41765416db9be5c2a75c708a30933568d87c9cc0 Mon Sep 17 00:00:00 2001
From: Werner Almesberger <werner@openmoko.org>
Date: Sun, 24 Oct 2010 13:07:24 -0300
Subject: [PATCH] cntr/term/term.sch: simulation of impedance-matched
 termination circuit

---
 cntr/term/term.sch | 71 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100644 cntr/term/term.sch

diff --git a/cntr/term/term.sch b/cntr/term/term.sch
new file mode 100644
index 0000000..fef7cdd
--- /dev/null
+++ b/cntr/term/term.sch
@@ -0,0 +1,71 @@
+<Qucs Schematic 0.0.15>
+<Properties>
+  <View=13,1,1455,909,0.955947,0,0>
+  <Grid=10,10,1>
+  <DataSet=term.dat>
+  <DataDisplay=term.dpl>
+  <OpenDisplay=1>
+  <showFrame=0>
+  <FrameText0=Title>
+  <FrameText1=Drawn By:>
+  <FrameText2=Date:>
+  <FrameText3=Revision:>
+</Properties>
+<Symbol>
+</Symbol>
+<Components>
+  <GND * 1 340 460 0 0 0 0>
+  <TLIN Line1 1 570 280 -26 20 0 0 "50 Ohm" 1 "2000 mm" 1 "0 dB" 0 "26.85" 0>
+  <R R3 1 710 280 -26 -59 0 2 "50 Ohm" 1 "26.85" 0 "0.0" 0 "0.0" 0 "26.85" 0 "european" 0>
+  <GND * 1 1280 460 0 0 0 0>
+  <GND * 1 1030 460 0 0 0 0>
+  <_BJT T1 1 930 280 8 -26 0 0 "npn" 1 "1e-16" 1 "1" 1 "1" 0 "0" 0 "0" 0 "0" 1 "0" 0 "0" 0 "1.5" 0 "0" 0 "2" 0 "100" 1 "1" 0 "0" 0 "0" 0 "0" 0 "0" 0 "0" 0 "0" 0 "0.75" 0 "0.33" 0 "0" 0 "0.75" 0 "0.33" 0 "1.0" 0 "0" 0 "0.75" 0 "0" 0 "0.5" 0 "0.0" 0 "0.0" 0 "0.0" 0 "0.0" 0 "0.0" 0 "26.85" 0 "0.0" 0 "1.0" 0 "1.0" 0 "0.0" 0 "1.0" 0 "1.0" 0 "0.0" 0 "0.0" 0 "3.0" 0 "1.11" 0 "26.85" 0 "1.0" 0>
+  <GND * 1 930 460 0 0 0 0>
+  <Vdc V2 1 1280 170 18 -26 0 1 "3.3 V" 1>
+  <GND * 1 820 460 0 0 0 0>
+  <Vac V3 1 340 330 -89 -26 1 1 "1 V" 1 "1 GHz" 1 "0" 0 "0" 0>
+  <.DC DC1 1 70 50 0 50 0 0 "26.85" 0 "0.001" 0 "1 pA" 0 "1 uV" 0 "no" 0 "150" 0 "no" 0 "none" 0 "CroutLU" 0>
+  <.TR TR1 1 70 140 0 86 0 0 "lin" 1 "0 us" 1 "1 us" 1 "20000" 0 "Gear" 0 "4" 0 "1 ns" 0 "1e-16" 0 "150" 0 "0.001" 0 "1 pA" 0 "1 uV" 0 "26.85" 0 "1e-3" 0 "1e-6" 0 "1" 0 "CroutLU" 0 "no" 0 "yes" 0 "0" 0>
+  <R R1 1 430 280 -26 15 0 0 "500 Ohm" 1 "26.85" 0 "0.0" 0 "0.0" 0 "26.85" 0 "european" 0>
+  <R R4 1 930 170 15 -26 0 1 "1 kOhm" 1 "26.85" 0 "0.0" 0 "0.0" 0 "26.85" 0 "european" 0>
+  <Vrect V4 1 340 410 18 -26 0 1 "3 V" 1 "50 ns" 1 "50 ns" 1 "1 ns" 1 "1 ns" 1 "5 ns" 0>
+  <R R2 1 1190 280 -26 15 0 0 "3 MOhm" 1 "26.85" 0 "0.0" 0 "0.0" 0 "26.85" 0 "european" 0>
+  <C C1 1 1030 370 17 -26 1 3 "3 pF" 1 "1 V" 0 "neutral" 0>
+  <C C2 1 820 370 17 -26 0 1 "22 pF" 1 "" 0 "neutral" 0>
+</Components>
+<Wires>
+  <460 280 540 280 "" 0 0 0 "">
+  <600 280 680 280 "" 0 0 0 "">
+  <740 280 820 280 "" 0 0 0 "">
+  <1220 280 1280 280 "" 0 0 0 "">
+  <1280 280 1280 460 "" 0 0 0 "">
+  <1030 280 1160 280 "Vin" 1150 180 107 "">
+  <930 310 930 460 "" 0 0 0 "">
+  <930 100 930 140 "" 0 0 0 "">
+  <930 100 1280 100 "" 0 0 0 "">
+  <1280 100 1280 140 "" 0 0 0 "">
+  <1280 200 1280 280 "" 0 0 0 "">
+  <930 200 930 220 "" 0 0 0 "">
+  <930 220 930 250 "" 0 0 0 "">
+  <930 220 1030 220 "" 0 0 0 "">
+  <1030 220 1030 280 "" 0 0 0 "">
+  <820 280 900 280 "" 0 0 0 "">
+  <820 280 820 340 "" 0 0 0 "">
+  <820 400 820 460 "" 0 0 0 "">
+  <340 440 340 460 "" 0 0 0 "">
+  <340 280 400 280 "" 0 0 0 "">
+  <340 280 340 300 "" 0 0 0 "">
+  <340 360 340 380 "" 0 0 0 "">
+  <1030 400 1030 460 "" 0 0 0 "">
+  <1030 280 1030 340 "" 0 0 0 "">
+  <340 280 340 280 "Vsrc" 370 250 0 "">
+</Wires>
+<Diagrams>
+  <Rect 120 799 1223 219 3 #c0c0c0 1 00 1 0 2e-08 3e-07 1 -0.344949 1 3.63136 1 -1 0.5 1 315 0 225 "" "" "">
+	<"Vin.Vt" #0000ff 0 3 0 0 1>
+	<"Vsrc.Vt" #ff0000 0 3 0 0 0>
+  </Rect>
+</Diagrams>
+<Paintings>
+  <Text 1040 390 12 #000000 0 "(parasitic)">
+</Paintings>