ANPEC APA3544KI-TU, APA3544KI-TR, APA3544JI-TU, APA3544JI-TR, APA3541KI-TU Datasheet

APA3541/4

Class AB Stereo Headphone Driver with Mute

Features

••

• High Signal-to-Noise Ratio

••

••

• High Slew Rate

••

••

• Low Distortion

••

••

• Large Output Voltage Swing

••

••

• Flexible Mute Function

••

••

• Excellent Power Supply Ripple Rejection

••

••

• Low Power Consumption

••

••

• Short-circuit Elimination

••

••

• Wide Temperature Range

••

••

• No Switch ON/OFF Clicks

••

••

• Integrated Voltage Divider (V

••

External Resistors

/2) to Eliminate

DD

Applications

••

• Portable Digital Audio

••

General Description

The APA3541/4 is an integrated class AB stereo
headphone driver contained in an SO-8 or a DIP-8
plastic package with Mute feature . Besides the com­mon Mute feature , the APA3541/4 further integrates
a voltage divider inside the chip . Thus , the external
resistors can be eliminated . The APA3541 has a fixed
gain of 0dB and the APA3544 has a fixed gain of 6dB
so that external gain setting is unnecessary. The de­vice is fabricated in a CMOS process and has been
primarily developed for portable digital audio appli­cations .

Ordering and Marking Information

APA3541/4

Handling Code
Temp. Range
Package Code

APA3541/4 J : APA3541/4

APA3541/4 K :

ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise
customers to obtain the latest version of relevant information to verify before placing orders.

Copyright  ANPEC Electronics Corp.
Rev. B.1 - Apr., 2003

XXXXX

APA3541/4
XXXXX

Package Code
J : P D IP - 8 K : S O P - 8
Y : C h ip F ro m
Temp. Range
I : - 40 to 8 5 C
Handling Code
TU : Tube TR : Tape & Reel

XXXXX - Date Code

XXXXX - Date Code

°

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APA3541/4

Block Diagram

Out A

Mute

Input A

V

MUTE

1

0dB

(6dB)

2

3

4

SS

* The values in parenthessis are for the APA3544.

A
+

180k

90k

(

Ω)

180k

Ω

90k

(

Ω)

0dB

(6dB)

B
+

BIAS

Ω

8

7

6

5

V

DD

Out B

BIAS

Input B

Function Pin Description

Pin Name I/O Function Description

Out A O A channel output pin

Mute I Chip disable control input, low active and high for normal operating

Input A I A channel input terminal

V

SS

Input B I B channel input terminal

BIAS I Right channel bias input pin

OUT B O B channel output pin

V

DD

Power ground pin

Power input pin

Absolute Maximum Ratings

Symbol Parameter Rating Unit

V

DD

t

SC(O)

T
T

T

STG

T

V

ESD

Note: 1. Human body model : C=100pF, R=1500Ω, 3 positive pulses plus 3 negative pulses

Copyright  ANPEC Electronics Corp.
Rev. B.1 -Apr., 2003

Supply Voltage 7 V
Output Short-circuit Duration, at TA=25°C, P
Operating Ambient Temperature range -40 to 85

A

Maximum Junction Temperature 150

J

tot

=1W

20 S

Storage Temperature Range -65 to +150
Soldering Temperature,10 seconds 300

S

Electrostatic Discharge -3000 to 3000

*1

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C

°

C

°

C

°

C

°

V

APA3541/4

Thermal Characteristics

Symbol Parameter Rating Unit

R

THJA

R

THJC

Electrical Characteristics

VIN=0dBV, VCC=5V, TA=25°C, f=1kHz, RL=32Ω (unless otherwise noted)

Thermal Resistance from Junction to Ambient in Free Air
DIP-8
SOP-8
Thermal Resistance from Junction to Case
DIP-8
SOP-8

108
210

45
40

K/W

K/W

Symbol Parameter Test Condition

V

DD

Supply Voltage 3.0 5.0 6.0 V

I

Q

Quiescent Current VIN= 0 Vrms 3.5 5 mA

Imute

V

G

∆

G

Mute Current 200
Mute Terminal Voltage 0.3 0.7 1.6 V

TM

Differential Channel

VCL

Voltage Gain

VCL

Vin=1Vrms,f= 1kHz,RL=32

Voltage Gain

Ω

Vin=0.5Vrms, f=1kHz,Rl=32

THD

P

P

Total Harmonic Channel
Distortion Factor

U1

Rated Output Power1

U2

Rated Output Power2

BW<80k Hz 0.03 0.1 %

RL=32Ω,THD+N=0.1% ,BW<8
0kHz

RL=16Ω,THD+N=0.1% ,BW<8
0kHz

APM3541/4

Min. Typ. Max.

-0.5 0 0.5 dB

APA3541 -2 0 2
APA3544 4 6 8

Ω

APA3541 50 55
APA3544 75 80

APA3541 105 110
APA3544 140 145

Unit

A

µ

dB

mW

mW

V

NO

Output Noise Voltage BW=20~20kHz , Vin=0Vrms -93 -85 dBV

CS

ATT

RR

Copyright  ANPEC Electronics Corp.
Rev. B.1 -Apr., 2003

Channel Separation F=1kHz

Mute Attenuation VIN=1Vrms,f=1kHz,Mute=L 65 70 dB
Ripple Rejection F

APA3541 -90 -95
APA3544 -65 -70

=100Hz,VRR=-20dB V 50 60 dB

RR

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dB

APA3541/4

Test and Application Circuit

µ

F

1

V

INB

10µ

F

57

4

V

SS

µ

1

F

V

INA

68

BIAS

0dB(6dB)

+

B

0dB(6dB)

+

A

32 1

Input A

Mute

µ

1

Out BInput B

BIAS

V

(APA3544)

MUTE

Out A

F

DD

APA3541

220µF

220µF

100k

V

DD

100µF

Ω

V

MUTE

H : Speaker Action
L : Mute on

Copyright  ANPEC Electronics Corp.
Rev. B.1 -Apr., 2003

www.anpec.com.tw4