SA621 查看數據表（PDF） - Philips Electronics
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SA621 Datasheet PDF : 16 Pages
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Philips Semiconductors
1GHz low voltage LNA, mixer and VCO
Product specification
SA621
Table 1. Power ON/OFF Control Logic
PD1
PD2
0
0
Full chip power-down
0
1 or open VCO on, Mixer on, LNA power-down
1 or open
0
VCO on, LNA and Mixer power-down
1 or open 1 or open Full chip power-on (default)
C3
6.8pF
L1
560nH
IFOUT
L4
560nH
20
MIXER
OUT
19
MIXER
OUT
C2
10nF
C10
2.2pF
L6
12nH
L3
6.8nH
C11 10nF
C1
100pF
C8
10nF
C14
6.8pF
18
17
16
15
14
GND MIXER GND
LNA
GND
IN
IN
C13
33pF
13
LNA
OUT
12
VCC
+–
VCC
3V
11
GND
SA621
C9
0.1µF
C4
2.2pF
PD1
PD2
1
2
R2
C6
24Ω
10nF
GND
3
LOOUT GND
4
5
GND
6
TANK
7
GND
8
C12
100pF
VCOOUT
GND BYPASS
9
10
C10
220pF
C5
.5pF
MURATA 2mm
1/4 WAVE
FREQ=1025MHz
VCO
D1
CONTROL
L7
18.5nH
Hi–Q
R1
5.1kΩ
D7
10nF
Figure 3. SA621 Applications Circuit
SR01424
1997 Nov 07
5
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