Panasonic AN7223 Datasheet

ICs for FM/AM Tuner

■ Overview

The AN7223 is an IC designed for high-class radio cas-

sette recorder with multifunctioned FM/AM IF system.

■ Features

•

Wide operating supply voltage range : VCC= 2.8V~12V

•

Incorporating both FM and AM detectors

•

Incorporating a level indicator output

(FM/AM common use)

•

AM : High sensitivity,including RF amplifier

•

Low power consumption

•

Muting control

•

AFC control

•

Fewer external parts

•

High stability on both AM and FM

•

Low shock noise level from function switch operation

•

SW band available (f= 30MHz)

AN7223

AM Tuner, FM/AM IF Amplifier Circuit for Radio Cassette Recorder

1
2
3
4
5
6
7
8
9

21.7±0.3

1.2±0.25

3 ~ 15˚

Unit : mm

6.3

±

0.25

0.5±0.1

2.54

18-Lead DIP Package (DIP018-P-0300E)

(3.45)

7.62±0.25

0.3

+ 0.1

– 0.25

18
17
16
15
14
13
12
11
10

0.51min.

3.8±0.25

■ Block Diagram

8 9 12

1

AM/FM
IF Amp.

7

Level Meter

4

3

AM RF
Amp.

5 18 6 2 10 11

AM
Mixer

FM IF
Amp.

AM
L Osc.

FM
Quad. Det.

Mute or
Shock Noise
Canceller

AGC

Mute Det.

AM)

CC (

AF
Amp.

AM
Det.

14

V

CC

17

16

13

15

GNDV

ICs for FM/AM Tuner

AN7223

Pin No.

Pin Name
1
2
3
4
5
6
7
8
9

FM IF Amp. Input
V

CC

(AM)
AM RF Amp. Input
AM Mixer Output
AGC Output (2)
AGC Output (1)
AM IF Amp. Input
IF By-pass
IF By-pass

■ Pin Descriptions

Pin No.

Pin Name
10
11
12
13
14
15
16
17
18

AM Detection Output
GND
FM Detector Coil
AF Output
V

CC

Level Meter Output
AFC Output
Reference Voltage
Local Oscillation

V

CC

P

D

T

opr

T

stg

Supply Voltage
Power Dissipation
Operating Ambient Temperature
Storage Temperature

V

mW

˚C
˚C

Parameter Symbol Rating Unit

14.4
317

–20 ~ + 75

–55 ~ + 150

■ Absolute Maximum Ratings (Ta=25˚C)

Vi= 80dBµ, f=10.7MHz,
f

dev.

= 22.5kHz, fm= 400Hz

Input at υO= –3dB
Input at υ

O

= less than –20dB

Vi= 50dBµ, f=10.7MHz,
f

dev.

= 22.5kHz, fm= 400Hz

V

i

= 80dBµ, f= 10.7MHz,

f

dev.

= 22.5kHz, fm= 400Hz

Vi= 80dBµ, f= 1MHz,
Mod.= 30%, f

m

= 400Hz

Input at υ

O

= 10mV

Vi= –10dBµ, f= 1MHz,
Mod.= 30%, f

m

= 400Hz

Vi= 80dBµ, f= 1MHz,
Mod.= 30%, f

m

= 400Hz

Parameter Symbol Condition min. typ. max. Unit

Total Circuit Current
Demodulation Output Level
Limiting Sensitivity

Muting Sensitivity
Signal Meter Driving

Output 1
Signal Meter Driving

Output 2
Total Circuit Current

Detection Output Level
Max.Sensitivity

Signal Meter Driving
Output 1

Signal Meter Driving
Output 2

I

tot

υ

O (FM)

V

i (lim)

Vi

(mute)

V

15

V

15

I

tot

υ

O (AM)

S

max.

V

15

V

15

9

75

41.5
45

120

1.14

8

60

4.5
0

1.12

FM

AM

mA
mV

dBµ
dBµ

mV

V
mA
mV

dBµ

mV

V

(DC measurement)

(DC measurement)

14

100

44.5
50

600

1.26
13
80

9.5

1.25

20

125

47.5
59

1150

1.42
19

100

12.5

130

1.38

■ Electrical Characteristics (V

CC

=5V, Ta= 25˚C)