MC13022A

5

MOTOROLA ANALOG IC DEVICE DATA

Lout

10

SS

6

VCC

TOKO Part No.

MF292BC–1349Z

28

I

Det

27

L–R

Det

26

Q

Out

25

VCC

24

Loop

Filter

23

Blend

22

GND

21

Stereo

Lamp

20

Osc

Feedbk

19

Osc

In

18

Pilot

Det

In

17

I

Pilot

16

Q

Pilot

15

CMOS

SS Out

See

MC13025

Data Sheet

for

Alternate

Approach

Mixer

Oscillator

IF

450 kHz

To

Signal

Strength

Meter

Tuning Line

From Synthesizer

TOKO Part No.

THB–122

Env

Det

1

Decoder

Input

2

Ref

3

AGC

4

IF

Input

5

Out

7

Left Notch

In

8

FBK

9

Rout

11

FBK

12

Right Notch

In

13

Out

14

MC13022A

Figure 2. High Performance Home Type AM Stereo Receiver

From

Mute Line

Unfiltered

To

Tuning

System

3.9 k

T1

51

.001

Logic VCC

(5.0 V)

T2

T1 – Ceramic Resonator muRata

T2 – Broad Resonance @ 450 kHz

Figure 3. Overall Selectivity of a Typical Receiver

versus Filter Control Voltage

Figure 4. Strength Output versus Input Signal

–60

AUDIO FREQUENCY (kHz)

0

–10

–20

–30

–40

–50

–70

–80

1.5

2.0

3.0

4.0

5.0 6.0

8.0 10

15

20

30

VPin 6 = 3.5 Vdc

2.5 Vdc

1.5 Vdc

SIGNAL INPUT, 10 k

Ω TO PIN 5 (mVrms)

5

236

Signal

Input

10 k 0.01

100 k

0.01

SS Meter

4.0

3.0

2.0

1.0

3.0

10

30

100

300

1.0 k

Zo = 13 k

5.0