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HFA3624 데이터 시트보기 (PDF) - Intersil
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HFA3624
2.4GHz Up/Down Converter
Intersil
HFA3624 Datasheet PDF : 19 Pages
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HFA3624
Typical Application Circuits
(Continued)
RECEIVE
AMP RF
OUTPUT
50
Ω
SIG. GEN.
2450MHz
50
Ω
TRANSMIT
AMP RF
OUTPUT
50
Ω
SIG. GEN.
2450MHz
50
Ω
RECEIVE
ENABLE
V
CC
= 2.7V
C15
5pF
C16
5pF
C3
5pF
C7
200pF
C8
5pF
C9
5pF
C26
200pF
C4
5pF
C19
200pF
LNA_V
CC
2
1
GND
2
LNA_OUT
3
GND
4
LNA_V
CC
1
5
GND
6
LNA_IN
7
PRE_OUT
8
GND
9
TXA_V
CC
2
10
GND
11
PRE_IN
12
GND
13
PRE_V
CC
1
14
C13
2.2
µ
F
C11
2200pF
C1
200pF
RX
BIAS
LNA
HFA3624
PRE
LOB
AMP
TX
BIAS
C10
200pF
RX_PE
28
27
RX_V
CC
RXM_RF
26
RXM
GND
25
RXM_IF+
24
C14
5pF
22
C17
2.7pF
RXM_IF-
22
23
LO_BY
C20
22
LO_IN 10pF
21
TXM_IF-
C24
20
C28
10pF
19
TXM_IF+ 470pF
TXM
GND
18
C22
5pF
TXM_RF
17
C21
470pF
16
TX_V
CC
TX_PE
15
C23
200pF
C2
200pF
TRANSMIT
ENABLE
C6
470pF
L3
R6
2k
Ω
L1
L2
12nH
39nH
68nH
SIG. GEN.
2170MHz
C18
470pF
50
Ω
L4
47nH
R5
250
Ω
C25
1.5pF
SIG. GEN.
2450MHz
50
Ω
IF OUTPUT
280MHz
50
Ω
C5
6.8pF
SIG. GEN.
280MHz
50
Ω
TRANSMIT.
MIXER
RF OUTPUT
50
Ω
FIGURE 5. OPTIMIZED LAB EVALUATION CIRCUIT
Typical Performance Curves
16
V
CC
= 2.7V
T
A
= 25
o
C
15
14
13
1dB
COMPRESSION
POINT
1dB
12
-25
-21
-17
-13
-9
-5
IF INPUT POWER (dBm)
FIGURE 6. TRANSMIT PRE-AMP 1dB COMPRESSION
-3
V
CC
= 2.7V
T
A
= 25
o
C
-4
-5
1dB
COMPRESSION
POINT
1dB
-6
-7
-20
-17
-14
-11
-8
-5
IF INPUT POWER (dBm)
FIGURE 7. TRANSMIT MIXER 1dB COMPRESSION
2-36
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