SA639DH Ver la hoja de datos (PDF) - Philips Electronics
Número de pieza
componentes Descripción
Fabricante
SA639DH Datasheet PDF : 16 Pages
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Philips Semiconductors
Low voltage mixer FM IF system with filter amplifier
and data switch
Product specification
SA639
SMA
RF IN
J1
110.592MHz
+/–288kHz
C1
5–30pF
C2
15pF
L1
180nH
SMA 120.392MHz C5
LO IN @–10dBm 5–30pF
J2
C6
39pF
C4
1nF
L2
120nH
C3
10nF
nc
+3V
VCC
GND
R8
10
C7 +
15µF
C8
100nF
RSSI
PWR DWN
DATA OUT
2.2µF
RL
10kΩ
CL
30pF
J3
POSTAMP IN
POSTAMP OUT
R7
5.6kΩ
R6
5.6kΩ
2.2µF
RL
10kΩ
CL
33pF
SW CTRL
SW OUT
U1
1 RF IN
2 RF BYPASS
3 XTAL
OSC (EMITTER)
4
XTAL
OSC (BASE)
5 VCC
6 RSSI FEEDBACK
7 RSSI OUT
8 PD CTRL
9 DATA OUT
10 POSTAMP IN
11 POSTAMP OUT
12 SW CTRL
C28
0.1µF 1.5nF
MIXER
OUT
MIXER OUT 24
IF AMP 23
DECOUPLING 1
IF IN 22
IF AMP 21
DECOUPLING 2
IF OUT 20
GROUND 19
LIMITER IN 18
C26
0.1µF
1nF
330nH
68pF
680nH
68pF 330pF
0.1µF
0.1µF 6.49kΩ
IF AMP
IN
348Ω
50Ω
0.1µF 1kΩ
IF AMP
OUT
100pF
100pF
560Ω
50Ω
330pF
680nH
LIMITER DEC1 17
LIMITER DEC2
16
C18
0.1µF
LIMITER OUT 15
QUAD IN 14
0.1µF 6.49kΩ
LIMITER
IN
C19
0.1µF
348Ω
50Ω
LIMITER
0.1µF 1kΩ OUT
50Ω
SW OUT 13
SA639
R8
C13
510
10nF
C14
33pF
10k
R9
C16
1.3k 5-30pF
QUAD IN DC
Figure 5. SA639 Test Circuit
C15
6.8pF
C17
15pF
L3
4.7µH
SR00034
1998 Feb 10
9
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