Panasonic AN12906A User Manual

New

Audio Interface IC AN12906A

■ Overview

The AN12906A is an input/output interface IC that has built-in audio capability.

This IC integrates in a single chip configuration a speaker amplifier , headphone

amplifier , microphone amplifier , AGC , microphone voltage supply and LPF.

Power supply voltage for Speaker-drive can drive low-voltage of 1.8 voltage.

AN12906A has the power-save function for each amplifier’s.

■ Features

● Built-in Amplifier’s.

Speaker/BTL (mono) , Headphone (stereo ) , Microphone (mono) ,LPF

● Built-in Power-save function.

Speaker-Amp. , Headphone-Amp. , Microphone-Amp. , All-Standby

● Beep-input , Input-Gain change High & Low , Mute , AGC ON/OFF

● Power supply voltage : Vcc = 2.7 V to 4.2 V , Vcc_SP = 1.8 V to 4.2 V

● Speaker absolute maximum rating : 270 mW (typ)

● Package : QFN44-pin

■ Applications

● IC-Recorder , PDA , DSC , etc.

■ Applications Circuit

1 Kotari-Yakemachi, Nagaokakyo, Kyoto 617-8520, Japan Tel. [phone] http://www.panasonic.co.jp/semicon/

New publication, effective from Nov. 27. 2001.

E00105AE

¶ The products and specifications are subject to change without any notice. Please ask for the latest product standards to guarantee the satisfaction of your product requirements.

(6.00)

0.20±0.10

(0.48)

(1.10)

0.80 max 6.20±0.10

5.00±0.10

3-C0.50

(6.00)

6.20±0.10

(1.10)

5.00±0.10

R 0.30

SEATING PLANE

1

22

12

34

44

11

0.10

33 23

23

44

34

12

22

33

(0.48)

0.16±0.06

111

0.10

M

0.40

QFN044-P-0606A

Unit:mm

AN12906A

MIC IN

Audio Rec OUT

Audio IN L-ch

Audio IN R-ch

SP

HP OUT

Supply for Microphone

LR

Beep IN

Low power drive · Mini package

■ Block Diagram

21

20

18

17

16

14

12

33 3132 26 25 23

1110987654321

44

43

42

41

39

37

36

34

40

Mic voltage

Supply

Det

AGC

LPF

Vref

Vcc

VrefHP

LPF

15

13

2.2Ω0.1µF

2.2Ω0.1µF

0.47µF

0.47µF

0.47µF

15kΩ

18.8kΩ

2.17kΩ

0.47µF

35

1µF

10µF

38

0.01µF

10µF

0.01µF

1µF

0.1µF 2.2Ω

15Ω 220µF

15Ω 220µF

0.1µF 2.2Ω

30 29 28

22

19

0.47µF

Mute

ON/OFF

NC

Audio IN R-ch

Audio IN L-ch

STB ON/OFF

Audio Rec Out

AGC ON/OFF

220kΩ

27kΩ

0.47µF

1.0µF

0.47µF

Mic Amp

ON/OFF

Mic IN

Vcc

+3.3 V

Vcc_SP

+3.3 V

HP

GND

HP

Save

SP

GND

SP

Save

NC

HP

16Ω

SP

8Ω

+

−

Vref

L-ch

R-ch

0.47µF

Gain Change

High/Low

NC

0.47

µF

Beep IN

Vref

150pF

330pF

10kΩ

10kΩ

0.47µF

27kΩ

100kΩ

2427

Gain Change

circuit Output

Vref

(Note) • Circui,circuit constant show an example and don't guaratee design of set.

• The condenser and the resistor for the osillation measure of Headphone output, speaker output is in need

of install on the bord.

• Please you make use to 20-pin and 21-pin are short, and 19-pin is open , if you don't use a low pass filter is

made up 19-pin,20-pin and 21-pin.

■ Absolute Maximum Ratings

■ Recommended Operating Range

Note1) All items are at T

a

= 25°C, except for the operating ambient temperature and storage temperature parameters.

Note2)

The range under Absolute Maximum Ratings, Power dissipation.

Note3)

Power dissipation shows the value of only package at Ta=70°C

Parameters

Storage temperature

Operating ambient temperature

Supply voltage

Supply current

Power dissipation

Symbol

T

stg

T

opr

V

CC

/V

CC_SP

I

CC

P

D

Rating

-55 to +125

-20 to +70

4.5

-

194.2

Unit

°C

°C

V

mA

mW

Note

1

1

2

3

■ Pin Description

Pin No. Function Pin No. Function

1 N.C 23 OP Amp. input

2 SP output (-) 24 AGC Output

3 GND (for SP) 25 AGC demodulation pin

4 SP output (+) 26 Gain change circuit output

5 SP Power save SW 27 Gain change bias output

6 Beep input 28 Gain change Low-input

7 SP amp. input 29 Gain change High-input

8 MIX amp. output 30 MIC amp. output

9 GND 31 GND

10 N.C 32 Gain change SW

11 Mute ON/OFF SW 33 MIC amp. power save SW

12 N.C 34 MIC amp. input

13 Playback input R-ch 35 MIC supply

14 Standy SW 36 MIC supply filter

15 Playback input L-ch 37 1/2 V

CC

(V

REF

)

16 GND 38 V

CC

17 REC output 39 1/2 V

CC_SP

(V

REF_SP

)

18 Feedback pin for Rec-out amp. 40 HP output L-ch

19 LPF2 OP Amp. output 41 GND (for HP)

20 LPF2 OP Amp. input 42 HP output R-ch

21 OP Amp. output 43 V

CC_SP

(for SP drive)

22 AGC ON/OFF SW 44 HP power save SW

Supply voltage

2.7 V to 4.2 V

1.8 V to 4.2 V

Vcc

V

CC_SP

(Note 2)