MC13022A 데이터 시트보기 (PDF) - Motorola => Freescale
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MC13022A Datasheet PDF : 8 Pages
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MC13022A
Figure 1. Test Circuit
VCC
0.001 0.001
L–R
Q
IDet
Det
Out
28
27
26
Decoder
From
Tuning System
2.2 k
0.001
47 µF
20 µF
Loop +
+
VCC
Filt Blend Gnd
25
24
23
22
Signal
Quality
Detector
3.0 k
LED
Stereo Osc
Lamp Fbk
21
20
+
0.33 0.68
3.9 k .001
T1
51
10 µF
0.47
+
Osc Pilot Det Pilot
Pilot
In
Input
I
Q
19
18
17
16
Pilot
Detector
VCO
Logic VCC
(5.0 V)
47 k
To CMOS
Logic
Stop
Sense
15
Gain–Controlled L–R
Q2
Envelope L+R
Matrix
1
Env
Det
0.001
2
Decoder
Input
IF Out
IF/AGC
Signal
Strength
Output
3.0 V
3
Ref
13 k
L2
4
AGC
+
10 µF
5
6
0.01
10 k
1.0 k Q1
Buffer
7
8
1.0 mH
120
+
10 µF
IF
Input
100 k
Filtered
Left
Output
0.01
Stop Sense,
SS Meter
Filter Amp
Filter Amp
1.7 Vref
Buffer
9
10
11
12
13
740
43 k
43 k
21.5 k
740
43 k
43 k
21.5 k
370
370
370
370
L Output R Output
14
Filtered
Right
Output
T1 – Ceramic Resonator muRata
T1 – CSA 3.60 MGF103
L2 – Miller 9230–92
NOTES: 1. Q1 is switched on when the Blend Pin 23 is externally held low and the signal is weak or has 110%
negative modulation. In this condition Q1 pulls Pin 6 low (0.25 to 1.3 V). At all other times, Pin 6 follows
the curve in Figure NO TAG.
2. Q2 (Pin 15) is switched on when Pin 6 voltage is below 1.7 V. Q2 could then be used as a logic output
to the tuning system, telling the tuning system to continue searching for a good signal.
3. User is cautioned not to require more than 1.0 mA from Pin 6.
MOTOROLA ANALOG IC DEVICE DATA
3
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