|
Silicided poly...silicon targe poly
& n+ b4 D: s4 B. }# Lunsilicided poly...unsilicon targe Poly
9 H5 [5 O# V9 W9 d9 H! \/ m, ?
6 A$ h B F7 ^/ z/ p0 Utc1 First-order temperature coefficient. (Default: resistor model parameter tc1r; 0 if no model is specified.)6 V/ n5 T5 ^% w- t3 l6 T
tc2 Second-order temperature coefficient. (Default: resistor model parameter tc2r; 0 if no model is specified.)" H; j- t0 ^0 D7 j: c
vc1 voltage across the first capacitor K4 H! T% `/ O' G( o
vc2 voltage across the second capacitor
3 V1 ^# J+ v( ?5 o8 t/ M
4 V' l0 r2 X, c1 p( UA two-terminal resistor.
) h4 _6 g* p$ EThe resistance R is influenced by the temperature as follows:
7 B9 D$ N/ r5 u' g: a yR = N (1 + AT + BT2)
7 g9 f5 I# u6 d% i- rT = Ta – Tn& T( s9 x9 F: Z! G' j9 Y9 l: i# B% |
where N, A, B are device parameters described below; Ta (the “ambient” temperature) is set by the& w) {6 t( d) v
.temp command; and Tn (the “nominal” temperature) G9 b2 A5 j+ {# K- w4 W& {4 X, l
4 t* }0 R) l! e/ ~7 a0 F" I& ]6 n* X0 W. G; b
This produces a resistor of resistance 30 kilohms at the nominal temperature tnom. If the temperature T0 B. X9 c6 k: }8 ^) n5 t" ^; m. H5 p
is different from tnom, the resistance is 30,000*(1+0.01*(T-tnom)+0.0001*(T-tnom)*(T-tnom)). For
$ e! ]( w' g% J# a9 L7 q! z* `, wexample, if the circuit temperature is 127 degrees and tnom is 27 degrees, the resistance is" s& c2 n- g$ ?
30,000*(1+0.01*100+0.0001*100*100) = 90,000 Ohms.3 @) X8 E( ]7 r9 w4 o, i% |
4 w- B, \" x* [5 h) x8 ^4 K
[ 本帖最後由 m851055 於 2007-7-30 08:50 PM 編輯 ] |
評分
-
查看全部評分
|