Electronic Components Datasheet Search
  English  ▼

X  

Preview PDF HTML

SI4721 Datasheet(PDF) 9 Page - Silicon Laboratories

Part # SI4721
Description  Si470X/1X/2X/3X/4X EVALUATION BOARD TEST PROCEDURE
PDF  68 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  SILABS [Silicon Laboratories]
Direct Link  http://www.silabs.com
Logo SILABS - Silicon Laboratories

SI4721 Datasheet(HTML) 9 Page - Silicon Laboratories

Back Button SI4721 Datasheet HTML 5Page - Silicon Laboratories SI4721 Datasheet HTML 6Page - Silicon Laboratories SI4721 Datasheet HTML 7Page - Silicon Laboratories SI4721 Datasheet HTML 8Page - Silicon Laboratories SI4721 Datasheet HTML 9Page - Silicon Laboratories SI4721 Datasheet HTML 10Page - Silicon Laboratories SI4721 Datasheet HTML 11Page - Silicon Laboratories SI4721 Datasheet HTML 12Page - Silicon Laboratories SI4721 Datasheet HTML 13Page - Silicon Laboratories Next Button
Zoom Inzoom in Zoom Outzoom out
 9 / 68 page
background image
AN388
Rev. 0.2
9
Figure 3. Si474x FM Tuner Setup
2.1. FM Tuner Testing Measurement Considerations
Several issues must be considered to make accurate measurements.
First, the power combiner and cable losses must be calibrated and factored into each measurement. The loss for
the Mini-Circuit power combiner is approximately 6 dB.
Second, most signal generators display the voltage generated at the input of the device under test (DUT) assuming
an input resistance of 50
. For example, if the signal generator displays V
L = 1 µV (0 dBµV), the generator source
voltage VS is 2 µV (6 dBµV). The load voltage VL is generated from the source voltage VS by the voltage divider
created by the 50
 generator source resistance R
S and the 50  load resistance RL. This distinction is important
only for sensitivity, RDS sensitivity, and IP3, which are specified in µV electromotive force (EMF), where EMF
refers to the source voltage VS. Measurements such as AM suppression, selectivity, and spurious response are
relative and may be referenced using VS or VL. To summarize, the generator displays the voltage at the input of the
DUT. In the case of Si47xx FM tuner, input impedance is high; therefore, to convert the value displayed on the
signal generator to EMF, double the voltage (add 6 dB).
Si47xx
Base board
Si474x
AM/FM Receiver
Daughter board
R&S SML01 Generator 1
Audio
Analyzer
RXS
PC
with USB
port
RCA OUT
USB
J79
USB Cable
RCA Cable
EXT pwr
USB pwr
EXT Jack
SW1
J76
J78
J6
R&S SML01 Generator 2
Agilent
E3646A
Power Supply
1
2
3
4
CH
1
CH
2
Power Connector
1. VMCU
2. VIO
3. VDD
4. GND
Power
Combiner
Digital Audio IN.
J30
Line
SPDIF
OUT
J2



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68


Datasheet Download

Go To PDF Page


Link URL



Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link to Datasheet    |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com