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參數(shù)資料
| 型號： | HMC714LP5E |
| 廠商： | HITTITE MICROWAVE CORP |
| 元件分類： | 檢測器 |
| 英文描述： | 100 MHz - 5800 MHz RF/MICROWAVE LINEAR DETECTOR, 15 dBm INPUT POWER-MAX |
| 封裝： | 5 X 5 MM, ROHS COMPLIANT, PLASTIC, SMT, 32 PIN |
| 文件頁數(shù)： | 26/40頁 |
| 文件大?。?/td> | 1985K |
| 代理商： | HMC714LP5E |
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For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
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The INPA and INNA pins are differential inputs on one of two power detectors, which we will refer to as channel A.
INPB and INNB pins are differential inputs on the other power detector, channel B. The inputs for both channels can
be externally configured with differential or single-ended input. Power match components are placed on these input
terminals, along with DC blocking capacitors. The coupling capacitor values also set the lower spectral boundary of
the input signal bandwidth. The inputs can be reactively matched (refer to input return loss graphs), but a resistor
network should be sufficient for good wideband performance.
Differential Input Interface:
The value of RD (=RDA=RDB) depends on the balun used; if the balun is
50Ω on both sides of the SE-Diff conversion,
then R
D
where
R
M
= the desired power match impedance in ohms.
For R
M
= 50Ω, RD = 67Ω ≈ 68Ω
Single-Ended Input Interface:
Tuned SE-interface: for signal frequencies > 900MHz
Choose L and C elements from the following graph for narrowband tuning of
the SE-interface:
R31/34 = 30Ω, R32/35 = 50Ω, C1/6 =1 nF
R30/33 = 270Ω,
Wideband SE-interface: for signal frequencies < 900 MHz
R31/34 = 0Ω, R32/35 = OPEN, R1/R3 = 68Ω,
R30/33 = Open
C2, C5 is 1 nF decoupling caps.
For wideband (un-tuned) input interfaces, choose the input decoupling capacitor values by first determining the
lowest spectral component the power detector is required to sense,
L
.
Input decoupling capacitor value
farads, where
L
is in Hertz.
Ex. If the power detector needs to sense down to 10 MHz, the decoupling capacitor value should be
1/(π*10E6*3.2) = 10 nF
A DC bias (Vcc-1.5V) is present on the INP[A,B] and IN[A,B] pins, and should not be overridden.
1
3.2
L
f
RF Input Interface
HMC714LP5 / 714LP5E
v07.1109
DUAL RMS POWER DETECTOR
0.1 - 5.8 GHz
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