Panasonic AN7293NSC Datasheet

ICs for FM/AM Tuner

AN7293NSC

FM-IF, NC, MPX IC for car radio

■ Overview

The AN7293NSC is an IC having FM-IF, NC and
MPX functions for car radio. A tuner block of car radio
can be constructed in combination with the AN7289NFBQ/
NSC. Small outline package product (the AN7293NFBQ)
is also available.

■ Features

• A less number of external components is required (8

components reduction compared with our conventional
IC)

• Neighbouring-station interference characteristics im-

provement by band-ATC function

• Band-mute on/off function

■ Applications

• Car radios

■ Block Diagram

Unit: mm

32 17

116

17.81±0.3

0.35±0.1

Seating plane

SSOP032-P-0375

9.3±0.3

7.2±0.3

0.3

0.15

2.0±0.2

1.01.23

0.9

0.1±0.1

30

3

GND

29

28

V

REF

4

5

Forced Mono

IF In

32

31

IF limiter IF det.

Level det. Multipath det. Demod. VCO PLL

1

2

S-Meter

S-Meter Adj.

27

6

ATC Adj.

CC

AFC

V

26

25

Mute PNL Noise det.

7

8

Sep. Adj.

IF-Count./ST-Ind./SD

24

23

SD, IF counter
Band Mute

9

10

L-Out

R-Out

22

11

21

Pilot

det.

12

20

13

19

14

18

15

17

16

BAND

V

1

AN7293NSC ICs for FM/AM Tuner

■ Pin Description

Pin No. Description

1 Control voltage adjustment
2 Control voltage
3 Multiple-path noise input
4 Multiple-path detection
5 ASC adjustment/forced monaural
6 ATC adjustment
7 Separation adjustment
8 ATC low-pass filter

9 R-channel output
10 L-channel output
11 Mute voltage
12 Pilot detection low-pass filter
13 PLL low-pass filter
14 PLL low-pass filter
15 VCO
16 Pilot cancel control low-pass filter

Pin No. Description

17 Band signal output/band mute SW
18 PNL low-pass filter
19 PNL AGC
20 PNL input
21 Detection output
22 PNL output hold
23 SD/FM-IF counter output/stereo indicator
24 SD sensitivity adjustment
25 AFC voltage
26 V

CC

27 FM detection
28 Soft mute adjustment
29 GND
30 V

REF

31 IF bypass
32 IF input

■ 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: Ta = 80°C

*

*

1

*

1

*

CC

CC

P

D

T

opr

T

stg

9.1 V
45 mA

380.2 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