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MICRF501 Datasheet(PDF) 7 Page - Micrel Semiconductor

Part # MICRF501
Description  300MHz to 600MHz RadioWire??RF Transceiver
PDF  18 Pages
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MICRF501 Datasheet(HTML) 7 Page - Micrel Semiconductor

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March 2003
7
MICRF501
MICRF501
Micrel
Typical Application
Figure 3 shows an example of a transceiver with modulation
applied to the VCO. The inductors and trimming capacitors
must have a good high frequency performance.
The varactor MA4ST-350-1141 is a single variable capaci-
tance diode manufactured by MACOM. The pin diode
MA-4P789-1141 is manufactured by MACOM.
L3
47n
ant-switch
D3
MA4P789-1141
D2
MA4P-789-1141
C12
1n
IchOut
RSSI
Lock
Det
QchOut
MICRF501
44-pin LQFP
VDD
VDD
41
42
43
44
IFGND
IFVDD
ICHOUT
QCHOUT
OSCVDD
OSCIN
OSCGND
GND
CMPOUT
CMPR
MOD
C11
1n
C10
1n
C9
1n
C8
4.7n
C7
4.7n
R6
8.2k
MIXER
VDD
MIXER
GND
LNA_C
RFGND2
RFIN
RFVDD
RFGND
RFOUT
PABIAS
PA_C
DIGGND
37
38
39
40
34
35
36
C26
10n
30
31
32
33
VDD
VDD
VDD
C5
100p
C27
22p
C25
470p
C4
100p
R14
1k
C28
6.8p
C29
18p
C32
2.2p
L4
68n
C33
5.6p
C31
15p
C6
100p
C3
1n
L5
10n
C30
47p
R4
10
Ω
R15
3.6k
R5
10
Ω
L2
15n
C34
47p
ANT
R3
10
Ω
C23
1n
C24
1n
C22
47p
C20
2p-6p
C21
5.6p
26
27
28
29
23
24
25
15
14
13
12
19
18
17
16
22
21
20
4
3
2
1
8
7
6
5
11
10
9
C16
100n
R9
8.2k
C15
6.8n
C17
470p
10MHz
C18
100n
R12
3.3k
R16
1k
R10
8.2k
C19
470p
C36
1n
R13
270k
R11
150k
R8
47k
D1
MA4ST350
C35
2.2p
C13
15p
R7
3.6k
L1
47n
R2
10
Ω
R1
10
Ω
VDD
C2
100p
C1
1n
Figure 3. Application Circuit



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