资料介绍
探棒的原理及種類-ìz ± ¤
, f°t¤P±
/qà : ×
(O/E) , ¤O ...
1
(DUT) ±K¤°tXC]A q
:
)
(qBqyBèB¨L (DC, Hz, kHz, MHz) (qBqeBqP (DUT¤ ) ) )
(50 ohm, 1 Mohm, ¨L
2
±póvTúq¨t
V CC
Gain = - RC RE
CC
RC
f0 = ±¤
1 2 π RCCC
V IN
RP RE
CP
Gain =
- (RC||RP) RE 1 2 π (RC||RP)(CC+CP)
f0 =
DUT
° a ± NOTE: VCC y
3
v.s.¨te W
qú-
¤W
=
(°T
¤W
) + (i
2 ¤W 2
) + (±
2 ¤W 2
)
2
2
1 1 1 1 = + + θ×…ε °Τ÷≠…ε ∞ι≠…ε ±××∈…ε
4
e Wt¨
vWT° eWt¨ / 0.1 0.2
v.s.i T
0.3 0.4 0.5
} 3%
°eWt¨ vWHi 10-A T ¨ × . t~ì¨úqn¤pó T ¤°e vWHi 3- . 3%i , Wt¨
0.6 0.7 0.8 0.9 1.0 100 97.5 95 92.5 90 87.5 85 82.5 80 77.5 75 72.5 70.7
ì¨úq T ° T / T°ê T
-3dB
HióeWt¨ A vW t~úqT |F
30%
3dBH¤W
.
5
±é¤Jqe¤°T§
tr Rs =1k tr =3ns Vsource ±Y 10 M LGround Lead ¨¤W CIn