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