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MICRF405 датащи(PDF) 36 Page - Micrel Semiconductor

номер детали MICRF405
подробное описание детали  290MHz-980MHz ISM Band ASK / FSK Transmitter
PDF  46 Pages
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производитель  MICREL [Micrel Semiconductor]
домашняя страница  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MICRF405 датащи(HTML) 36 Page - Micrel Semiconductor

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Micrel
MICRF405
April 2006
36
M9999-041906
(408) 955-1690
ASK2
ASK1
ASK0
State
0
0
0
3dB ASK depth
0
0
1
6dB ASK depth
0
1
0
9dB ASK depth
0
1
1
12dB ASK depth
1
0
0
15dB ASK depth
1
0
1
18dB ASK depth
1
1
0
21dB ASK depth
1
1
1
> 30dB ASK depth
Table 25. ASK Modulation Depth When PA[2:0]=7.
ASKshape
Comments
0..7
Programmable ASK filter. It can be programmed in eight steps. “0” is no shaping, “7” most shaping.
Table 26. ASK Shaping/Filtering.
XCOtune
Comments
0..31
Programmable XCO load capacitor
Table 27. XCO Capacitor Setting.
XCO_Fast
Comments
0
The XCO is running on a constant bias current.
1
When going from PD to TX mode, the XCO is running on a high current during start up.
Table 28. XCO Fast Startup.
Low_Batt_en
LowBatt_level
LDO_by
Comments
0
X
X
Low battery detect circuit off
1
0
0
Low battery detect circuit active. Interrupt is flagged if VDD falls below
2V.
1
1
0
Low battery detect circuit active. Interrupt is flagged if VDD falls below
2.1V.
1
0
1
Low battery detect circuit active. Interrupt is flagged if VDD falls below
1.8V.
1
1
1
Low battery detect circuit active. Interrupt is flagged if VDD falls below
1.9V.
Table 29. Low Battery Detect.



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