HFA3624 查看數據表（PDF） - Intersil
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HFA3624 Datasheet PDF : 19 Pages
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HFA3624
Typical Application Circuits (Continued)
RECEIVE
AMP RF
OUTPUT
50Ω
SIG. GEN.
2450MHz
50Ω
TRANSMIT
AMP RF
OUTPUT
50Ω
SIG. GEN.
2450MHz
50Ω
RECEIVE
ENABLE
VCC = 2.7V
C15
5pF
C16
5pF
C3
5pF
C7
200pF
C8
5pF
C9
5pF
C26
200pF
C4
5pF
C19
200pF
LNA_VCC2 1
GND
2
LNA_OUT
3
GND
4
LNA_VCC1 5
GND
6
LNA_IN
7
PRE_OUT
8
GND
9
TXA_VCC2 10
GND
11
PRE_IN
12
GND
13
PRE_VCC1 14
C13
2.2µF
C11
2200pF
C1
200pF
RX
BIAS
LNA
HFA3624
PRE LOB
AMP
TX
BIAS
C10
200pF
RX_PE
28
27 RX_VCC
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_VCC
TX_PE
15
C23
200pF
C2
200pF
TRANSMIT
ENABLE
C6
470pF
L3
R6
2kΩ
L1
L2 12nH
39nH
68nH
SIG. GEN.
2170MHz
C18
470pF
50Ω L4
47nH
R5
250Ω
C25
1.5pF
SIG. GEN.
2450MHz
50Ω
IF OUTPUT
280MHz
50Ω
C5
6.8pF
SIG. GEN.
280MHz
50Ω
TRANSMIT.
MIXER
RF OUTPUT
50Ω
FIGURE 5. OPTIMIZED LAB EVALUATION CIRCUIT
Typical Performance Curves
16
VCC = 2.7V
TA = 25oC
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
VCC = 2.7V
TA = 25oC
-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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