參數(shù)資料
型號(hào)： LTM9005CV-AA#PBF
廠商： LINEAR TECHNOLOGY CORP
元件分類(lèi)： 模擬信號(hào)調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, PBGA204
封裝： 22 X 15 MM, 4.32 MM HEIGHT, LEAD FREE, MO-222, LGA-204
文件頁(yè)數(shù)： 6/24頁(yè)
文件大小： 468K
代理商： LTM9005CV-AA#PBF
LTM9005
14
9005p
applicaTions inForMaTion
RF Input Port
The RF input is shown in Figure 3 and is internally matched
from 1.6GHz to 2.3GHz, requiring no external components
over this frequency range. The input return loss, shown
in Figure 4, is typically 12dB at the band edges. The input
match at the lower band edge can be optimized with a
series 3.9pF capacitor at Pin M3, which improves the
1.6GHz return loss to greater than 25dB. Likewise, the
2.3GHz match can be improved to greater than 25dB with
a series 1.5nH inductor. A series 2.7nH/2.2pF network will
simultaneously optimize the lower and upper band edges
and expand the RF input bandwidth to 1.2GHz to 2.5GHz.
Measured RF input return losses for these three cases are
also plotted in Figure 4.
Figure 3. RF Input Schematic
Figure 5. RF Input Return Loss with and Without Matching
Alternatively, the input match can be shifted as low as
400MHz or up to 3800MHz by adding a shunt capacitor
(C5) to the RF input. A 450MHz input match is realizedwith
C5 = 12pF, located 6.5mm away from Pin M3 on a 50Ω
input transmission line. A 900MHz input match requires
C5 = 3.9pF, located at 1.7mm. A 3.6GHz input match is
realized with C5 = 1pF, located at 2.9mm. This series
transmission line/shunt capacitor matching topology
allows the LTM9005 to be used for multiple frequency
standards without circuit board layout modifications. The
series transmission line can also be replaced with a series
chip inductor for a more compact layout.
Input return losses for the 450MHz, 900MHz, 2.6GHz and
3.6GHzapplicationsareplottedinFigure5.Theinputreturn
loss with no external matching is repeated in Figure 5 for
comparison.The2.6GHzRFinputmatchusesthehigh-pass
matching network shown in Figure 3 with C5 = 3.9pF and
L5 = 3.6nH. The high-pass input matching network is also
used to create a wideband or dual-band input match. For
example, with C5 = 3.3pF and L5 = 10nH, the RF input is
matchedfrom800MHzto2.2GHz,withoptimummatching
in the 800MHz to 1.1GHz and 1.6GHz to 2.2GHz bands,
simultaneously.
Figure 4. Series Reactance Matching
RFIN
ZO = 50
L = L (mm)
C5
RF
9005 F03
RFIN
C5
L5
LOW-PASS MATCH
FOR 450MHz, 900MHz
and 3.6GHz RF
HIGH-PASS MATCH
FOR 2.6GHz RF
AND WIDEBAND RF
TO
MIXER
3
FREQUENCY (GHz)
0.2
–30
RF
POR
TRETURN
LOSS
(dB)
–25
–20
–15
–10
1.2
2.2
3.2
4.2
9005 F04
–5
0
0.7
1.7
2.7
3.7
SERIES 2.7nH
AND 2.2pF
NO EXT MATCH
SERIES 1.5nH
SERIES 3.9pF
FREQUENCY (GHz)
0.2
–30
RF
POR
TRETURN
LOSS
(dB)
–25
–20
–15
–10
1.2
2.2
3.2
4.2
9005 F05
–5
0
0.7
1.7
2.7
3.7
450MHz
L = 6.5mm
C5 = 12pF
2.6GHz
SERIES 3.9pF
SHUNT 3.6nH
3.6GHz
L = 2.9mm
C5 = 1pF
900MHz
L = 1.7mm
C5 = 3.9pF
NO EXT
MATCH
相關(guān)PDF資料
PDF描述
LTM9005CV-AB#PBF SPECIALTY ANALOG CIRCUIT, PBGA204
LTM9005IV-AB#PBF SPECIALTY ANALOG CIRCUIT, PBGA204
LUCW3000ACN-TR PLL FREQUENCY SYNTHESIZER, 2200 MHz, PDSO14
LUCW3000ACN PLL FREQUENCY SYNTHESIZER, 2200 MHz, PDSO14
LUCW3000ACN PLL FREQUENCY SYNTHESIZER, 2200 MHz, PDSO14
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTM9005GD 功能描述:LED 電路板指示器 Vert LED Assmbly 5mm Green RoHS:否 制造商:Lumex LED 大小:3 mm 照明顏色:Green 波長(zhǎng):565 nm 光強(qiáng)度:30 mcd 安裝類(lèi)型:SMD/SMT 顯示角:60 deg 封裝:Reel
LTM9006-14 制造商:LINER 制造商全稱:Linear Technology 功能描述:14-Bit, 65Msps/40Msps/25Msps Low Power Octal ADCs
LTM9006CY-14#PBF 制造商:Linear Technology 功能描述:IC ADC 14BIT SPI/SRL 25M 140-BGA 制造商:Linear Technology 功能描述:ADC 8CH 1.8V 14BIT 25MSPS 制造商:Linear Technology 功能描述:ADC, 14BIT, 25MSPS, SPI, BGA-140; Resolution (Bits):14bit; Sampling Rate:25MSPS; Supply Voltage Type:Single; Supply Voltage Min:1.7V; Supply Voltage Max:1.9V; Supply Current:175mA; Digital IC Case Style:BGA; No. of Pins:140 ;RoHS Compliant: Yes
LTM9006IY-14#PBF 制造商:Linear Technology 功能描述:IC ADC 14BIT SPI/SRL 25M 140-BGA 制造商:Linear Technology 功能描述:MS-uModule, 14-bit, 25Msps, 1.8V Octal ADC, Serial LVDS Outputs
LTM9007-14 制造商:LINER 制造商全稱:Linear Technology 功能描述:14-Bit, 65Msps/40Msps/25Msps Low Power Octal ADCs
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*