Stereo 290mW 8
Speaker Driver
Copyright
ANPEC Electronics Corp.
Rev. A.2 - Apr., 2001
APA4800
www.anpec.com.tw
1
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.
Features
Ordering Information
The APA4800 is an integrated class AB stereo head-
phone amplifier contained in an SO-8 or a DIP-8 plas-
tic package . The APA4800 is capable of delivering
290mW of max . output power to an 8
load with less
than 10% (THD+N) from a 5V power supply . The de-
vice has been primarily developed for portable digital
audio applications .
Applications
Portable Digital Audio
Personal Computers
Microphone Preamplifier
Gereral Description
Block Diagram
1
2
3
4
5
6
7
8
Out A
Inverting Input A
Non-inverting Input A
Non-inverting Input B
Out B
Inverting Input B
-
-
+
+
V
SS
V
DD
APA4800
O perating Voltage
Single Supply 3V to 7V
Dual Supply
1.5V to
3.5V
High Signal-to-Noise Ratio 100dB
High Slew Rate 5V/
s
Low Distortion -65dB
Output Power at 10% THD+N
into 8
!!!!!!!!!!!!!!
290mW
into 16
!!!!!!!!!!!!!!
190mW
Large Output Voltage Swing
Excellent Power Supply Ripple Rejection
Low Power Consumption
Short-circuit Elimination
Wide Temperature Range
No Switch ON/OFF Clicks
Available in 8 pin SOP or DIP Package
APA4800
Handling Code
Temp. Range
Package Code
Package Code
J : PDIP - 8
K : SOP - 8
Temp. Range
I : - 40 to 85 C
Handling Code
TU : Tube
TR : Tape & Reel
Copyright
ANPEC Electronics Corp.
Rev. A.2 - Apr., 2001
APA4800
www.anpec.com.tw
2
Thermal Characteristics
Symbol
Parameter
Value
Unit
R
THJA
Thermal Resistance from Junction to Ambient in Free Air
DIP-8
SO-8
109
210
K/W
K/W
Absolute Maximum Ratings
Electrical Characteristics
T
A
=25C, f=1kHz( unless otherwise noted)
Symbol
Parameter
Rating
Unit
V
DD
Supply Voltage
5
V
T
SC (O)
Output Short-circuit Duration, at T
A
=25
C, P
TOT
=1W
20
S
T
A
Operating Ambient Temperature range
-40 to 85
C
T
J
Maximum Junction Temperature
150
C
T
STG
Storage Temperature Range
-65 to +150
C
T
S
Soldering Temperature,10 seconds
260
C
V
ESD
Electrostatic Discharge
-3000 to 3000
*1
V
Note: *1. Human body model : C=100pF, R=1500
, 3 positive pulses plus 3 negative pulses
APA4800
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
DD
Power Supply Voltage
2.7
5.5
V
V
DD
=5V
I
DD
Supply Current
No Load
2.5
mA
V
I(OS)
Input Offset Voltage
5
50
mV
AC Characteristics
(THD+N)/S Total Harmonic Distortion
plus Noise to Signal
Ratio
P
O
=200mW, R
L
=8
, f=1kHz
P
O
=120mW, R
L
=16
, f=1kHz
0.1
0.05
%
P
O
Output Power
(THD+N)/S=0.2%, f=1kHz
mW
R
L
=8
210
R
L
=16
140
P
O
Output Power
(THD+N)/S=10%, f=1kHz
mW
R
L
=8
290
R
L
=16
190
PSRR
Power Supply Rejection
Ratio
C
B
=2.2
F,V
RIPPLE
=200mVrms,
f=120Hz
55
dB
S/N
Signal to Noise Ratio
R
L
=8
20
Vrms
Copyright
ANPEC Electronics Corp.
Rev. A.2 - Apr., 2001
APA4800
www.anpec.com.tw
3
Electrical Characteristics Cont.
T
A
=25C, f=1kHz( unless otherwise noted)
220pF
1
2
3
4
6
7
8
-
+
-
+
15k
15k
15k
15k
V
INA
V
INB
R
L
R
L
220
F
100
F
V
DD
V
OUTA
V
OUTB
220
F
2.2
F
220pF
5
2.2
F
APA4800
V
REF
typ.1/2V
DD
Test And Application Circuits
APA4800
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
DD
=3V
I
DD
Supply Current
No Load
2.2
mA
V
I(OS)
Input Offset Voltage
5
mV
AC Characteristics
(THD+N)/S Total Harmonic Distortion
plus Noise to Signal
Ratio
P
O
=50mW, R
L
=8
, f=1kHz
P
O
=40mW, R
L
=16
, f=1kHz
0.15
%
P
O
Output Power
(THD+N)/S=0.2%, f=1kHz
mW
R
L
=8
60
R
L
=16
45
P
O
Output Power
(THD+N)/S=10%, f=1kHz
mW
R
L
=8
90
R
L
=16
65
Copyright
ANPEC Electronics Corp.
Rev. A.2 - Apr., 2001
APA4800
www.anpec.com.tw
4
Typical Characteristics
Output Power (W)
THD+N (%)
THD+N vs Output Power
10m
300m
100m
0.01
10
0.1
1
f=20Hz
f=20kHz
f=1kHz
V
DD
=
5V
R
L
=16
A
V
= -1
BW<80kHz
THD+N vs Output Power
V
DD
=
5V
R
L
=8
A
V
= -1
BW<80kHz
THD+N (%)
Output Power (W)
f=20Hz
f=20kHz
f=1kHz
10m
500m
0.01
10
0.1
1
100m
0.01
10
0.1
1
20
20k
100
1k
10k
Frequency (Hz)
THD+N (%)
V
DD
=
5V
P
O
=200mW
R
L
=8
NO FILTERS
THD+N vs Frequency
A
V
= -2
A
V
= -5
A
V
= -1
0.01
10
0.1
1
Frequency (Hz)
V
DD
=
5V
P
O
=120mW
R
L
=16
NO FILTERS
THD+N vs Frequency
THD+N (%)
A
V
= -2
A
V
= -5
A
V
= -1
20
20k
100
1k
10k
Copyright
ANPEC Electronics Corp.
Rev. A.2 - Apr., 2001
APA4800
www.anpec.com.tw
5
Typical Characteristics Cont.
0.01
10
0.1
1
10m
100m
50m
Output Power (W)
THD+N (%)
THD+N vs Output Power
f=20Hz
f=20kHz
f=1kHz
V
DD
=
3V
R
L
=16
A
V
= -1
BW<80kHz
THD+N vs Output Power
0.01
10
0.1
1
10m
200m
100m
V
DD
=
3V R
L
=8
A
V
= -1
BW<80kHz
f=20Hz
f=20kHz
f=1kHz
THD+N (%)
Output Power (W)
10
20
20k
100
1k
10k
0.01
0.1
1
Frequency (Hz)
THD+N vs Frequency
V
DD
=
3V
P
O
=50mW
R
L
=8
NO FILTERS
THD+N (%)
A
V
= -2
A
V
= -5
A
V
= -1
Frequency (Hz)
THD+N (%)
THD+N vs Frequency
0.01
10
0.1
1
V
DD
=
3V
P
O
=40mW
R
L
=16
NO FILTERS
A
V
= -2
A
V
= -5
A
V
= -1
20
20k
100
1k
10k
PDF 
ZIP