AN7223 Datasheet, PDF (1/3 Pages) Panasonic Semiconductor – AM Tuner, FM/AM IF Amplifier Circuit for Radio Cassette Recorder

ICs for FM/AM Tuner
AN7223
AM Tuner, FM/AM IF Amplifier Circuit for Radio Cassette Recorder
s Overview
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)
Unit : mm
1
18
2
17
3
16
4
15
5
14
6
13
7
12
8
11
9
10
6.3±0.25
3.8±0.25
0.51min.
(3.45)
3 ~ 15˚ _7.62±0.25
0.3^{+–00.1.25}
18-Lead DIP Package (DIP018-P-0300E)
s Block Diagram
89
1
AM/FM
IF Amp.
7
FM IF
Amp.
12
FM
Quad. Det.
Mute Det.
Level Meter
4
3
AM RF
Amp.
AM
Mixer
Mute or
Shock Noise
Canceller
AM
L Osc.
AGC
AF
Amp.
AM
Det.
14 VCC
17
16
13
15
5
18
6
2
10
11
VCC (AM)
GND