mc13022a Freescale Semiconductor, Inc, mc13022a Datasheet - Page 3

• Manufacturer Part Number: mc13022a
• Description: Advance Information Advanced Medium Voltage Am Stereo Decoder
• Manufacturer: Freescale Semiconductor, Inc

MOTOROLA ANALOG IC DEVICE DATA
V CC
0.001
0.001
I Det
Env
Det
28
1
Decoder
Input
0.001
L–R
Det
NOTES: 1. Q1 is switched on when the Blend Pin 23 is externally held low and the signal is weak or has 110%
27
2
Decoder
1.0 mH
10 µF
13 k
120
L2
Out
IF Out
Ref
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
3. User is cautioned not to require more than 1.0 mA from Pin 6.
26
Q
+
3.0 V
3
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.
to the tuning system, telling the tuning system to continue searching for a good signal.
10 µF
V CC
AGC
0.001
25
4
IF/AGC
100 k
+
47 µF
Loop
Filt
24
5
0.01
Input
IF
Tuning System
10 k
+
0.01
Signal
Strength
Output
From
Blend
Stop Sense,
2.2 k
SS Meter
23
6
Figure 1. Test Circuit
Detector
20 µF
+
Quality
Signal
1.0 k
MC13022A
Gnd
22
7
Filtered
Output
Q1
Left
Buffer
Stereo
Lamp
Gain–Controlled L–R
Envelope L+R
21
8
LED
43 k
370
21.5 k
3.0 k
Osc
Fbk
20
9
Filter Amp
T1 – Ceramic Resonator muRata
T1 –
L2 – Miller 9230–92
VCO
370
T1
3.9 k
43 k
740
CSA 3.60 MGF103
Osc
L Output
10
19
In
.001
Pilot Det
Matrix
51
Input
R Output
11
18
Filter Amp
0.33
10 µF
43 k
370
Pilot
Detector
12
17
Pilot
I
+
+
21.5 k
0.68
370
740
43 k
0.47
1.7 V ref
Pilot
13
16
Q
Buffer
Logic V CC
14
Filtered
(5.0 V)
15
Output
Right
Q2
47 k
Sense
Stop
To CMOS
Logic
3