Panasonic AN7293NFBQ Datasheet

ICs for FM/AM Tuner

AN7293NFBQ

FM-IF, NC, MPX IC for Car Radio

■ Overview

The AN7293NFBQ is an IC having FM-IF, NC and
MPX function for car radio. A tuner block of car radio can
be constructed by this IC and the AN7289NFBQ/NSC.

■ Features

• A less number of external components is required (8

components reduction compared with our conventional
IC)

• Neighbering-station interference characteristics im-

provement by band-ATC function

• Band-mute on/off function

• DIL package product (the AN7293NSC) is also available

■ Applications

• Car radios

■ Block Diagram

23

22

V

CC

Mute

GND

V

REF

IF-In

25

26

27

28

29

Mute-Adj.

24

IF

det.

V

REF

IF

limiter

AFC

21

SD-Adj.

20

19

Band-det.

SD

IF-counter

25

32

0.1±0.1

ST-Ind.

Mono: high

Stereo: low
18

PNL

Noise

det.

24 17

18

7.0±0.3

9.2±0.4

SSOP032-P-0375

Unit: mm

16

–0.05

+0.10

0.3

0.8

9

–0.05

+0.10

0.15

(0.55)

0.625±0.100 0.625±0.100

17

16

15

14

13

V

BAND

12

7.0±0.3

9.2±0.4

1.4±0.2

Level

30

Out

V

S

31

det.

Multipath

det.

Demod.

32

1

2

3

4

5

R-Out

SEP-Adj.

ATC-Adj.

6

L-Out

VCO

PLL

Pilot

det.

7

11

10

9

8

Forced mono

1

AN7293NFBQ ICs for FM/AM Tuner

■ Pin Description

Pin No. Description

1 ASC adjustment/forced monaural
2 ATC adjustment
3 Separation adjustment
4 ATC low-pass filter
5 R-ch. output
6 L-ch. output
7 Mute voltage
8 Pilot detection low-pass filter

9 PLL low-pass filter
10 PLL low-pass filter
11 VCO
12 Pilot cancel control low-pass filter
13 Band signal output/band mute SW
14 PNL low-pass filter
15 PNL AGC
16 PNL input

Pin No. Description

17 Detection output
18 PNL output hold
19 SD/FM-IF counter output/stereo indicator
20 SD sensitivity adjustment
21 AFC voltage
22 V

CC

23 FM detection
24 Soft mute adjustment
25 GND
26 V

REF

27 IF bypass
28 IF input
29 Control voltage adjustment
30 Control voltage
31 Multi-path noise input
32 Multi-path detection

■ Absolute Maximum Ratings

Parameter Symbol Rating Unit

Supply voltage V
Supply current I

2

Power dissipation
Operating ambient temperature
Storage temperature

Note)*1: Except for the power dissipation, operating ambient temperature, and storage temperature, all ratings are for Ta = 25°C.

2: Ta = 80°C

*

*

1

*

1

*

CC

CC

P

D

T

opr

T

stg

9.1 V
45 mA

343.3 mW

−30 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