ICs for FM/AM Tuner
AN7223
AM Tuner, FM/AM IF Amplifier Circuit for Radio Cassette Recorder
s
Overview
1
18
17
16
14
13
12
11
10
0.51min.
6.3±0.25
3.8±0.25
(3.45)
2.54
0.3
–
1
+ 0. 5
0.2
Unit : mm
0.5±0.1
1.2±0.25
14 V
CC
1
7
AM/FM
IF Amp.
FM IF
Amp.
FM
Quad. Det.
Mute Det.
17
16
13
15
The AN7223 is an IC designed for high-class radio cas-
sette recorder with multifunctioned FM/AM IF system.
s
Features
•
Wide operating supply voltage range : V
CC
= 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)
2
3
21.7±0.3
4
5
6
7
8
9
15
3 ~ 15˚
7.62±0.25
18-Lead DIP Package (DIP018-P-0300E)
s
Block Diagram
8
9
12
Level Meter
Mute or
Shock Noise
Canceller
AF
Amp.
4
3
AM RF
Amp.
AM
Mixer
AM
L Osc.
AGC
AM
Det.
5
18
6
2
V
CC (AM)
10
11
GND
PANASONIC [ PANASONIC SEMICONDUCTOR ]
