Philips Semiconductors
Product specification
SA615
High performance low power mixer FM IF system
1997 Nov 07
6
20
RSSI
OSCILLATOR
LIMITER
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
IF AMP
MINI–CIRCUIT ZSC2–1B
MUTE
RSSI
OUTPUT
AUDIO UNMUTED
AUDIO
C14
IFT1
C13
C12
C11
C10
C9
C8
C7
C6
R9
R10
R11
X1
R7
30.5
L2
SW3
SW4
SW1
VCC
EXT.
LOC
OSC
44.545
45MHZ
R3
R1
R2
SW2
C3
C4
R4
51.1
C5
C2
C1
L1
R6
178
R8
39.2
”C” WEIGHTED
AUDIO
MEASUREMENT
CIRCUIT
45.06
MHZ
50.5
2430
3880
96.5
32.6
71.5
C24
C22
C20
C19
C18
C15
C16
C17
FLT2
SW7
SW6
SW5
SW8
SW9
C23
C21
R17
5.1k
FLT1
–
25dB,
1500/50
Ω
PAD
–
10dB,
50/50
Ω
PAD
–
29dB,
929/50
Ω
PAD
–
10.6dB,
50/50
Ω
PAD
–
36dB,
156k/50
Ω
PAD
22pF NPO Ceramic
1nF Ceramic
10.0pF NPO Ceramic
10pF NPO Ceramic
100nF +10% Monolithic Ceramic
100nF +10% Monolithic Ceramic
100nF +10% Monolithic Ceramic
100nF +10% Monolithic Ceramic
15nF +10% Ceramic
100nF +10% Monolithic Ceramic
150pF +2% N1500 Ceramic
100nF +10% Monolithic Ceramic
6.8
µ
F Tantalum (minimum) *
C21
C23
C25
Flt 1
Flt 2
IFT 1
L1
L2
X1
R9
R17
R10
R11
100nF +10% Monolithic Ceramic
100nF +10% Monolithic Ceramic
100k +1% 1/4W Metal Film (optional)
100k +1% 1/4W Metal Film (optional)
5.1k +5% 1/4W Carbon Composition
100k +1% 1/4W Metal Film
44.545MHz Crystal ICM4712701
0.8
µ
H TOKO 292CNS–T1038Z
Ceramic Filter Murata SFG455A3 or equiv
Ceramic Filter Murata SFG455A3 or equiv
100nF +10% Monolithic Ceramic
C1
C2
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C17
C18
QUAD
DETECTOR
MUTE
SWITCH
MIXER
700
Automatic Test Circuit Component List
EMITTER
BASE
1.3k
51.7
71.5
96.5
32.8
51.5
47pF NPO Ceramic
180pF NPO Ceramic
C26
390pF +10% Monolithic Ceramic
455kHz 270
µ
H TOKO #303LN-1129
300nH TOKO #5CB-1055Z
C26
*NOTE: This value can be reduced when a battery is the power source.
SR00343
Figure 3. SA615 45MHz Test Circuit (Relays as shown)
