AN7273 Panasonic, AN7273 Datasheet

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AN7273

Manufacturer Part Number
AN7273
Description
AM Tuner, FM/AM IF Amplifier Circuit
Manufacturer
Panasonic
Datasheet
for Hi-Fi stereo tuner. They are functioned with stop signal
pin besides the AN7223S function.
ICs for FM/AM Tuner
AN7273, AN7273S
AM Tuner, FM/AM IF Amplifier Circuit
Level meter output (FM–AM common use)
Stop signal output (for synthesizer tuner)
AM : including RF amplifier and high sensitivity
Low power consumption
Low shock noise level from function switch operation
Fewer external parts
Overview
Features
Block Diagram
The AN7273 and the AN7273S are the ICs designed
1
7
4
3
AM RF
Amp.
8
AM–FM
IF Amp.
9
Level Meter
5
AM
Mixer
FM IF
Amp.
AM
L. Osc.
18
FM
Quad. Det.
12
Mute or Shock
Noise Canceller
AGC
6
AN7273S
AN7273
V
CC (AM)
2
3 ~ 15˚
Mute Det.
18-Lead SOP Package (SOP018-P-0300)
0.3
AF Amp.
AM Det.
18-Lead DIP Package (DIP018-P-0300E)
1
2
3
4
5
6
7
8
9
1
9
10
7.62 0.25
6.3 0.25
5.4 0.3
7.7 0.3
GND
11
18
17
16
15
14
13
12
11
10
14
17
16
13
15
3.8 0.25
V
V
18
10
CC
REF
0.51min.
(3.45)
Unit : mm
Unit : mm

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AN7273 Summary of contents

Page 1

... ICs for FM/AM Tuner AN7273, AN7273S AM Tuner, FM/AM IF Amplifier Circuit Overview The AN7273 and the AN7273S are the ICs designed for Hi-Fi stereo tuner. They are functioned with stop signal pin besides the AN7223S function. Features • Level meter output (FM–AM common use) • ...

Page 2

... AN7273, AN7273S Pin Descriptions Pin No. Pin Name Input 2 AM Supply/Mute Adjustment Input 4 AM Mixer Output 5 AGC Output (2) 6 AGC Output ( Input 8 IF By-pass 9 IF By-pass Absolute Maximum Ratings (Ta=25˚C) Parameter Supply Voltage Supply Current AN7273 Power Dissipation AN7273S AN7273 Operating Ambient Temperature ...

Page 3

... CC 14 140 12 120 10 100 (lim 10.7MHz 0 = 400Hz, 22.5kHz ( Mute ON –10 –20 –30 –40 –50 –60 –70 80 100 120 –300 –200 –100 ( AN7273, AN7273S V – 1 (AM 1MHz i 1 400Hz, 30% m (FM 10.7MHz 400Hz, 22.5kHz 0.8 6 0.6 4 0 120 Input Voltage V ...

Page 4

... AN7273, AN7273S Application Circuit D : MA27W 1 From FM Front End. 330 Printed Circuit Board Layout AM ANT SW FM 2.2k AM Mute 0.022 + – 0.022 F – 470 V 2 0.0047 F 0.022 – – – AN7273 – – 0.022 10k 3 1 Mute ON OFF FM IF Input C1 CF1 T3 ANT OSC ...

Page 5

... Connection Diagram Number of Turns Tuning Cap – Matsushita 2 – – – Matsushita 2 – 3 125T 2 4 – – 2 35T Matsushita 2 6 – 4 10T 2 – 1 19T 1 6 Maker Center Freq. Toko 455kHz AN7273, AN7273S Unloaded Q 90 20% 100pF — 95 20% 1500pF 60 30% Band Width Loss 7kHz (–6dB) 2.6dB ...

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