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| 型號(hào)： | T491A475K010AS |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 0.4-GHz TO 4-GHz QUADRATURE MODULATOR |
| 中文描述： | 0.4 - GHz至4 GHz的正交調(diào)制器 |
| 文件頁數(shù)： | 18/26頁 |
| 文件大小： | 615K |
| 代理商： | T491A475K010AS |
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DEFINITION OF SPECIFICATIONS
Unadjusted Carrier Feedthrough
This specification measures the amount by which the local oscillator component is attenuated in the output
spectrum of the modulator relative to the carrier. This further assumes that the baseband inputs delivered to the
pins of the TRF3703 are perfectly matched to have the same dc offset (VCM). This includes all four baseband
inputs: I, I, Q, and Q. This is measured in dBm.
Adjusted (Optimized) Carrier Feedthrough
This differs from the unadjusted suppression number in that the baseband input dc offsets are iteratively
adjusted around their theoretical value of VCM to yield the maximum suppression of the LO component in the
output spectrum. This is measured in dBm.
Unadjusted Sideband Suppression
This specification measures the amount by which the unwanted sideband of the input signal is attenuated in the
output of the modulator, relative to the wanted sideband. This further assumes that the baseband inputs
delivered to the modulator input pins are perfectly matched in amplitude and are exactly 90
°
out of phase. This
is measured in dBc.
Adjusted (Optimized) Sideband Suppression
This differs from the unadjusted sideband suppression in that the baseband inputs are iteratively adjusted
around their theoretical values to maximize the amount of sideband suppression. This is measured in dBc.
Suppressions Over Temperature
This specification assumes that the user has gone though the optimization process for the suppression in
question, and set the optimal settings for the I, Q inputs. This specification then measures the suppression when
temperature conditions change after the initial calibration is done.
f
Frequency Offset kHz (Relative to Carrier)
80
70
60
50
40
30
20
10
0
10
200 150 100
50
0
50
100
150
200
P
G024
3
RD
LSB
(dBc)
3
RD
LSB
2
ND
LSB
LSB
(Undesired)
P
OUT
SBS
(dBc)
Carrier
USB
(Desired)
2
ND
USB
(dBc)
2
ND
USB
3
RD
USB
C
(dBm)
TRF3703
SLWS184D–MARCH 2006–REVISED JUNE 2007
Figure 26
shows a simulated output and illustrates the respective definitions of various terms used in this data
sheet. The graph assumes a baseband input of 50 kHz.
Figure 26. Graphical Illustration of Common Terms
18
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| T491A475K010AS-F | 功能描述:鉭質(zhì)電容器-固體SMD 4.7uF 10V 10% Case 3216-18 RoHS:否 制造商:AVX 電容:100 uF 電壓額定值:20 V ESR: 容差:10 % 外殼代碼 - in:2917 外殼代碼 - mm:7343 高度:4.1 mm 制造商庫存號(hào):E Case 工作溫度范圍:- 55 C to + 125 C 系列:TBM 產(chǎn)品:Tantalum Solid Low ESR Commercial Grade 封裝:Bulk |
| T491A475K010AT | 功能描述:鉭質(zhì)電容器-固體SMD 10V 4.7uF 10% "A" RoHS:否 制造商:AVX 電容:100 uF 電壓額定值:20 V ESR: 容差:10 % 外殼代碼 - in:2917 外殼代碼 - mm:7343 高度:4.1 mm 制造商庫存號(hào):E Case 工作溫度范圍:- 55 C to + 125 C 系列:TBM 產(chǎn)品:Tantalum Solid Low ESR Commercial Grade 封裝:Bulk |
| T491A475K010AT | 制造商:KEMET Corporation 功能描述:CAPACITOR CASE A 4.7UF 10V 制造商:KEMET Corporation 功能描述:CAPACITOR, CASE A, 4.7UF, 10V |
| T491A475K010AT2478 | 制造商:KEMET Corporation 功能描述:4.70UF 10.0V 制造商:KEMET Corporation 功能描述:4.70UF 10.0V - Tape and Reel |
| T491A475K010AT4043 | 制造商:KEMET Corporation 功能描述:4.70UF 10.0V - Tape and Reel |
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