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부품번호 | HSMP-389T 기능 |
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기능 | Surface Mount RF PIN Switch Diodes | ||
제조업체 | AVAGO | ||
로고 | |||
전체 13 페이지수
HSMP-389x Series, HSMP-489x Series
Surface Mount RF PIN Switch Diodes
Data Sheet
Description/Applications
The HSMP-389x series is o ptimized for switching appli-
cations where low resistance at low current and low ca-
pacitance are required. The HSMP-489x series products
feature ultra low parasitic inductance. These products
are specifically designed for use at frequencies which
are much higher than the upper limit for conventional
PIN diodes.
Pin Connections and Package Marking
16
25
34
Notes:
1. Package marking provides orientation, identification, and date
code.
2. See “Electrical Specifications” for appropriate package marking.
Features
• Unique Configurations in Surface Mount Packages
– Add Flexibility
– Save Board Space
– Reduce Cost
• Switching
– Low Capacitance
– Low Resistance at Low Current
• Low Failure in Time (FIT) Rate[1]
• Matched Diodes for Consistent Performance
• Better Thermal Conductivity for Higher Power
Dissipation
• Lead-free
Note:
1. For more information see the Surface Mount PIN Reliability Data
Sheet.
HSMP-389x Series Typical Performance, TC = 25°C, each diode
100 0.55
0.50
10 0.45
0.40
1
0.1
0.01 0.1 1 10 100
IF – FORWARD BIAS CURRENT (mA)
Figure 1. Total RF Resistance at 25 C vs.
Forward Bias Current.
0.35
0.30 1 MHz
0.25
0.20 0
1 GHz
48
12 16 20
VR – REVERSE VOLTAGE (V)
Figure 2. Capacitance vs. Reverse Voltage.
120 Diode Mounted as a
115 Series Attenuator in a
50 Ohm Microstrip and
110 Tested at 123 MHz
105
100
95
90
85
1 10 30
IF – FORWARD BIAS CURRENT (mA)
Figure 3. 2nd Harmonic Input Intercept
Point vs. Forward Bias Current.
200
160
VR = –2V
120
80
VR = –5V
40
VR = –10V
010 15 20 25
30
FORWARD CURRENT (mA)
Figure 4. Typical Reverse Recovery Time vs.
Reverse Voltage.
100
10
1
0.1
0.01 0
125 C 25 C –50 C
0.2 0.4 0.6 0.8 1.0 1.2
VF – FORWARD VOLTAGE (V)
Figure 5. Forward Current vs. Forward Voltage.
Typical Applications for Multiple Diode Products
321
1
2
3
0 456
b1 b2 b3
Figure 6. HSMP-389L used in a SP3T Switch.
2 12
“ON” 0 +V
“OFF” 0 –V
1 321
1
4 56
RF in RF out
Figure 7. HSMP-389L Unconnected Trio used in a Dual Voltage, High Isolation
Switch.
4
4페이지 Typical Applications for HSMP-489x Low Inductance Series
Microstrip Series Connection for HSMP-489x Series
In order to take full advantage of the low inductance
of the HSMP‑489x series when using them in series ap-
plications, both lead 1 and lead 2 should be connected
together, as shown in Figure 17.
3
Equivalent Circuit Model
HSMP-389x Chip*
Rs Rj
0.5
Cj
12
HSMP-489x
Figure 16. Internal Connections.
0.12 pF*
* Measured at -20 V
RT = 0.5 + Rj
CT = CP + Cj
Rj
=
20
I0.9
I = Forward Bias Current in mA
* See AN1124 for package models
Figure 17. Circuit Layout.
Microstrip Shunt Connections for HSMP-489x Series
In Figure 18, the center conductor of the microstrip
line is interrupted and leads 1 and 2 of the HSMP-489x
diode are placed across the resulting gap. This forces
the 1.5 nH lead inductance of leads 1 and 2 to appear as
part of a low pass filter, reducing the shunt parasitic in-
ductance and increasing the maximum available atten-
uation. The 0.3 nH of shunt inductance external to the
diode is created by the via holes, and is a good estimate
for 0.032" thick material.
50 OHM MICROSTRIP LINES
Co-Planar Waveguide Shunt Connection for HSMP-489x Series
Co-Planar waveguide, with ground on the top side of
the printed circuit board, is shown in Figure 20. Since
it eliminates the need for via holes to ground, it offers
lower shunt parasitic inductance and higher maximum
attenuation when compared to a microstrip circuit.
Co-Planar Waveguide
Groundplane
Center Conductor
Groundplane
Figure 20. Circuit Layout.
PAD CONNECTED TO GROUND
BY TWO VIA HOLES
Figure 18. Circuit Layout.
1.5 nH
1.5 nH
0.3 pF
0.3 nH
0.3 nH
Figure 19. Equivalent Circuit.
7
0.3 pF
0.75 nH
Figure 21. Equivalent Circuit.
A SPICE model is not available for PIN diodes as SPICE
does not provide for a key PIN diode characteristic, car-
rier lifetime.
7페이지 | |||
구 성 | 총 13 페이지수 | ||
다운로드 | [ HSMP-389T.PDF 데이터시트 ] |
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부품번호 | 상세설명 및 기능 | 제조사 |
HSMP-3890 | (HSMP-38xx / HSMP-48xx) Surface Mount PIN Diodes | Agilent |
HSMP-3890 | Surface Mount RF PIN Switch Diodes | AVAGO |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |