Panasonic AN7289NFBQ Datasheet

ICs for FM/AM Tuner

AN7289NFBQ

FM-FE+AM IC for car radio

■ Overview

The AN7289NFBQ is an IC having FM-FE+AM

functions for car radio. A tuner block of car radio can be
constructed by using this IC and the AN7293NSC/NFBQ.

■ Features

• A less number of electrolytic capacitors is required (3

capacitors reduction compared with our conventional
IC)

• AM: Effective sensitivity is improved by 2 dB through

ATC

• AM: Strong-input characteristic is improved by 2-loop-

AGC function

• The AN7289NSC of DIL package type is also available

■ Applications

• Car radios

■ Block Diagram

FM-mix. in

FM-PIN D

24

23

22

21

20

19

18

24 17

25

32

18

0.1±0.1

7.0±0.3

9.2±0.4

LQFP032-P-0707

17

Unit : mm

16

–0.05

+0.10

0.3

7.0±0.3

0.8

9

–0.05

+0.10

0.15

(0.55)

0.625±0.100 0.625±0.100

9.2±0.4

1.4±0.2

V

FOSC

V

AOSC

GND2

Keyed-AGC in

AM-AF

OUT

25

26

27

28

29

30

31

32

FM/AM SW

AM

OSC

FE

OSC

AM

ATC

AM
det.

1

2

CC

V

FM

AGC

AM. S-meter

AM

IF AGC

AM

SSC

3

4

AM-SD out

AM-IF count

FM

mix.

IF amp.

IF amp.

5

6

AM-S. meter

FM

AM

mix.

AM

RF

AGC

AM

7

AM-IF out

16

15

14

13

12

11

10

9

8

GND1

1

AN7289NFBQ ICs for FM/AM Tuner

■ Pin Descriptions

Pin No. Description

1 AM detection output
2V

CC1

3 AM-IF counter output/DX/LO SW
4 AM-SD output
5 AM-signal meter output
6 FM-IF output
7 AM-IF output
8 GND1

9 SSC
10 AM-RF level detection
11 AM-WAGC detection/DX setting
12 AM-IF input
13 AM-mix. output
14 FM-IF input
15 AM-RF gain control
16 AM-mix. input

Pin No. Description

17 FM-PIN diode driver
18 AM-OSC coil pin
19 FM-mix. output 2
20 FM-mix. output 1
21 FM-PIN diode driver
22 FM-mix. input
23 V

/FM/AM SW

CC2

24 FM-AGC output
25 FM-OSC buffer output
26

AM-OSC buffer output/FE-AGC sensitivity setting
27 GND2
28 FM-OSC coil pin
29 FM-keyed-AGC input
30 AM-AM output/LO setting
31 AM-ATC input
32 AM-IF level detection

■ Absolute Maximum Ratings

Parameter Symbol Rating Unit

Supply voltage V
Supply current I

2

Power dissipation
Operating ambient temperature
Storage temperature

Note)*1: Ta = 25°C except power dissipation, operating ambient temperature and storage temperature.

2: Referring to "■ Technical Information" for power dissipation at Ta = 80°C, use the circuit under the conditions not exceeding

*

the allowable limit value.

*

1

*

1

*

CC

CC

P

D

T

opr

T

stg

9.1 V
56 mA

343.3 mW

−35 to +80 °C

−55 to +125 °C

■ Recommended Operating Range

Parameter Symbol Range Unit

Supply voltage V

CC

7.2 to 9.0 V

2