ANPEC APA3544KI-TU, APA3544KI-TR, APA3544JI-TU, APA3544JI-TR, APA3541KI-TU, APA3541KI-TR, APA3541JI-TU, APA3541JI-TR 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 (VDD/2) to Eliminate External Resistors

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

A P A 3541/4

P ackage C ode

J : P D IP - 8

K : S O P - 8

H andling C ode

Y : C hip F rom

T em p . R ange

T em p . R ange

I : - 40 to 85 °

C

P ackage C ode

H andling C ode

T U : Tube

T R : T ape & R eel

A P A 3541/4 J :

A P A 3541/4

X X X X X - D ate C ode

X X X X X

A P A 3541/4 K :

A P A 3541/4

X X X X X - D ate C ode

X X X X X

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.	1	www.anpec.com.tw
Rev. B.1 - Apr., 2003

APA3541/4

Block Diagram

		M UTE
Out A	1			8	V	DD
	0dB		0dB
	(6dB)	A	(6dB)		Out B
Mute 2			B	7
		+	+
Input A	3		BIAS	6	BIAS
		180kΩ	180kΩ
		( 90kΩ )	( 90kΩ )
VSS	4			5	Input B

* The values in parenthessis are for the APA3544.

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
VSS		Power ground pin
Input B	I	B channel input terminal
BIAS	I	Right channel bias input pin
OUT B	O	B channel output pin
VDD		Power input pin

Absolute Maximum Ratings

Symbol	Parameter	Rating	Unit
VDD	Supply Voltage	7	V
tSC(O)	Output Short-circuit Duration, at TA=25° C, Ptot=1W	20	S
TA	Operating Ambient Temperature range	-40 to 85	° C
TJ	Maximum Junction Temperature	150	° C
TSTG	Storage Temperature Range	-65 to +150	° C
TS	Soldering Temperature,10 seconds	300	° C
VESD	Electrostatic Discharge	-3000 to 3000 *1	V

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

Copyright ANPEC Electronics Corp.	2	www.anpec.com.tw
Rev. B.1 -Apr., 2003

APA3541/4

Thermal Characteristics

Symbol	Parameter	Rating	Unit
RTHJA	Thermal Resistance from Junction to Ambient in Free Air
	DIP-8	108	K/W
	SOP-8	210
RTHJC	Thermal Resistance from Junction to Case
	DIP-8	45	K/W
	SOP-8	40

Electrical Characteristics

	VIN=0dBV, VCC=5V, TA=25° C, f=1kHz, RL=32Ω			(unless otherwise noted)
	Symbol	Parameter		Test Condition			APM3541/4			Unit
							Min.	Typ.	Max.
	VDD	Supply Voltage					3.0	5.0	6.0	V
	IQ	Quiescent Current	VIN= 0 Vrms					3.5	5	mA
	Imute	Mute Current						200		µ A
	VTM	Mute Terminal Voltage					0.3	0.7	1.6	V
	∆ GVCL	Differential Channel					-0.5	0	0.5	dB
		Voltage Gain
	GVCL	Voltage Gain	Vin=1Vrms,f= 1kHz,RL=32Ω			APA3541	-2	0	2	dB
			Vin=0.5Vrms, f=1kHz,Rl=32Ω			APA3544	4	6	8
	THD	Total Harmonic Channel	BW<80kHz					0.03	0.1	%
		Distortion Factor
	PU1	Rated Output Power1	RL=32Ω	,THD+N=0.1%,BW<8	APA3541		50	55		mW
			0kHz
						APA3544	75	80
	PU2	Rated Output Power2	RL=16Ω	,THD+N=0.1%,BW<8	APA3541		105	110		mW
			0kHz
						APA3544	140	145
	VNO	Output Noise Voltage	BW=20~20kHz , Vin=0Vrms					-93	-85	dBV
	CS	Channel Separation	F=1kHz			APA3541	-90	-95		dB
						APA3544	-65	-70
	ATT	Mute Attenuation	VIN=1Vrms,f=1kHz,Mute=L				65	70		dB
	RR	Ripple Rejection	FRR=100Hz,VRR=-20dBV				50	60		dB
	Copyright	ANPEC Electronics Corp.		3				www.anpec.com.tw

Rev. B.1 -Apr., 2003

APA3541/4

Test and Application Circuit

1µ F

VINB

1 0 µ

F

Input B

BIAS

Out B

5

6

7

BIAS

B

0dB(6dB)

+

0dB(6dB)

+

A

M UTE

220µ F

VDD											VDD
	8								100µ F
APA3541
(APA3544)

4

3

2

1

VSS

Input A

M ute

Out A

220

µ F

1µ F

100k

Ω

VINA

VMUTE

1µ F

H : Speaker Action

L : M ute on

Copyright ANPEC Electronics Corp.	4	www.anpec.com.tw
Rev. B.1 -Apr., 2003