PMLL4448 查看數據表（PDF） - NXP Semiconductors.
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PMLL4448 Datasheet PDF : 11 Pages
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NXP Semiconductors
PMLL4148L; PMLL4448
High-speed switching diodes
1.2
Cd
(pF)
1.0
mgd004
0.8
0.6
0.4
0
10
VR (V)
20
f = 1 MHz; Tj = 25 °C
Fig 5. Diode capacitance as a function of reverse voltage; typical values
8. Test information
RS = 50 Ω
V = VR + IF × RS
D.U.T.
IF
SAMPLING
OSCILLOSCOPE
Ri = 50 Ω
VR
mga881
tr
tp
10 %
90 %
input signal
t
+ IF
trr
t
(1)
output signal
(1) IR = 1 mA
Input signal: reverse pulse rise time tr = 0.6 ns; reverse voltage pulse duration tp = 100 ns; duty cycle δ ≤ 0.05
Oscilloscope: rise time tr = 0.35 ns
Fig 6. Reverse recovery time test circuit and waveforms
I
1 kΩ
450 Ω
RS = 50 Ω
D.U.T.
OSCILLOSCOPE
Ri = 50 Ω
I
90 %
10 %
tr
tp
input signal
V
VFR
t
t
output signal
mga882
Input signal: forward pulse rise time tr = 20 ns; forward current pulse duration tp ≥ 100 ns; duty cycle δ ≤ 0.005
Fig 7. Forward recovery voltage test circuit and waveforms
PMLL4148L_PMLL4448
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 8 — 1 February 2011
© NXP B.V. 2011. All rights reserved.
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