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參數(shù)資料
| 型號(hào)： | LTC6409CUDB#TRPBF |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 7/24頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC AMP/DRIVER DIFF GBW 10-QFN |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 類型： | ADC 驅(qū)動(dòng)器 |
| 應(yīng)用： | 數(shù)據(jù)采集 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 10-WQFN |
| 供應(yīng)商設(shè)備封裝： | 10-TQFN（3x2） |
| 包裝： | 帶卷 (TR) |
LTC6409
15
6409fa
RS
50
VS
RF
LTC6409
100
RF
CF
RI
RT
RL
50
C
B
A
6409 F10
1dB
LOSS
IDEAL
4:1
IDEAL
1:4
1dB
LOSS
+–
CF
RT
applicaTions inForMaTion
Figure 8. Definition of IMD3
Figure 9. Graphical Representation of the
Relationship between IMD3 and OIP3
amplifier, implying that each single tone is 1VP-P, result-
ing in VPDIFF = 0.5V. Using RL = 50 as the associated
impedance, PO is calculated to be close to 4dBm.
As seen in Equation (5), when a higher impedance is used,
the same level of intermodulation distortion performance
results in a lower intercept point. Therefore, it is impor-
tant to consider the impedance seen by the output of the
LTC6409 when working with intercept points.
Comparing linearity specifications between different am-
plifier types becomes easier when a common impedance
level is assumed. For this reason, the intercept points
for LTC6409 are reported normalized to a 50 load im-
pedance. This is the reason why OIP3 in the Electrical
Characteristics table is 4dBm more than half the absolute
value of IMD3.
If the top half of the LTC6409 demo board (DC1591A,
shown in Figure 12) is used to measure IMD3 and OIP3,
one should make sure to properly convert the power seen
at the differential output of the amplifier to the power that
appears at the single-ended output of the demo board.
Figure 10 shows an equivalent representation of the top
half of the demo board. This view ignores the DC-blocking
and bypass capacitors, which do not affect the analysis
here. The transmission line transformers (used mainly
for impedance matching) are modeled here as ideal 4:1
impedance transformers together with a –1dB block. This
separates the insertion loss of the transformer from its
ideal behavior. The 100Ω resistors at the LTC6409 output
create a differential 200Ω resistance, which is an imped-
ance match for the reflected RL.
As previously mentioned, IMD3 is measured for 2VP-P dif-
ferential peak (i.e. 10dBm) at the output of the LTC6409,
corresponding to 1VP-P (i.e. 4dBm) at each output alone.
From LTC6409 output (location A in Figure 10) to the input
of the output transformer (location B), there is a voltage
attenuationof1/2(or–6dB)formedbytheresistivedivider
Figure 10. Equivalent Schematic of the Top Half of the LTC6409 Demo Board
PS
POWER
FREQUENCY
IMD3 = PS – PO
f = f2 – f1 = f1 – (2f1 – f2) = (2f2 – f1) – f2
6409 F08
PS
PO
2f1 – f2
2f2 – f1
f1
f2
IMD3
1
×
IIP3
PO
OIP3
POUT
(dBm)
PIN
(dBm)
6409 F10
PS
3
×
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC6409HUDB#PBF | 制造商:Linear Technology 功能描述:DIFF-AMPLIFIER, 10GHZ, 3300V/US, QFN-10, No. of Amplifiers:1, Input Offset Voltage:300V, Bandwidth:10GHz, Amplifier Case Style:QFN, No. of Pins:10, Supply Voltage Range:2.7V to 5.25V, Slew Rate:3300V/s, Supply Current:52mA, MSL:- , RoHS Compliant: Yes |
| LTC6409HUDB#TRMPBF | 功能描述:IC AMP/DRIVER DIFF GBW 10-QFN RoHS:是 類別:集成電路 (IC) >> 線性 - 放大器 - 專用 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:60 系列:- 類型:可變?cè)鲆娣糯笃?應(yīng)用:CATV 安裝類型:表面貼裝 封裝/外殼:20-WQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:20-TQFN-EP（5x5） 包裝:托盤 |
| LTC6409HUDB#TRPBF | 功能描述:IC AMP/DRIVER DIFF GBW 10-QFN RoHS:是 類別:集成電路 (IC) >> 線性 - 放大器 - 專用 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:60 系列:- 類型:可變?cè)鲆娣糯笃?應(yīng)用:CATV 安裝類型:表面貼裝 封裝/外殼:20-WQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:20-TQFN-EP（5x5） 包裝:托盤 |
| LTC6409HUDBTRMPBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:10GHz GBW, 1.1nV/Hz Differential Amplifier/ADC Driver |
| LTC6409IUDB#PBF | 制造商:Linear Technology 功能描述:SP Amp DIFF AMP Single 5.25V 10-Pin QFN EP 制造商:Linear Technology 功能描述:Bulk |
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