PJ2822M
Dual Low-Voltage Power Amplifier
1-8
2002/01.ver.A
he PJ2822M is a monolithic integrated circuit in 8 lead
Minidip package.It is intended for use as dual audio
power amplifier in portable cassette player and radios.
Supply Voltage Down to 1.8V
Low Crossover Distorsion
Low Quiescent Current
Bridge or Stereo Configuration
Parameter Symbol
Value
Unite
Supply Voltage
Vs
16
V
Peak Output Current
Io
1
A
Total Power Dissipation at Tamb = 50
Tcase = 50
Ptot 1
1.4
W
W
Storage and Junction Temperature
Tstg,Tj
-40 ~ +150
Parameter Symbol
Value
Unite
Thermal Resistance Junction-ambient Max.
Rthj-amb
100
/W
Thermal Resistance Junction-pin(4) Max.
Rthj-case
70
/W
T
Device Operating
Temperature Package
PJ2822MCD DIP-8
PJ2822MCS
-20 ~ +85
SOP-8
FEATURES
DIP-8
SOP-8
THERMAL DATA
ABSOLUTE MAXIMUM RATINGS
ORDERING INFORMATION
SCHEMATIC DIAGRAM
Pin : 1.Compensation 5.Gnd
2.Voltage Feedbacl 6.Output
3.Current Sense 7.Vcc
4.RT/CT 8.Vref
PJ2822M
Dual Low-Voltage Power Amplifier
2-8
2002/01.ver.A
Paramete
Symbol
Test Conditions
Min.
Typ.
Max.
Unit
STEREO(test circuit of Figure 1)
Suppy Voltage
Vs
1.8
15
V
Quiescent Ouput Voltage
Vo
Vs = 3V
2.7
1.2
V
V
Quiescent Drain Current
Id
6
9
mA
Input Bias Current
Ib
100
nA
Outut Power (each channel)
(f =1KHz, d =10%)
Po R
L
= 32 Vs = 9V
Vs = 6V
Vs = 4.5V
Vs = 3V
Vs = 2V
R
L
= 16 Vs = 6V
R
L
= 8 Vs = 9V
Vs = 6V
R
L
= 4 Vs = 6V
Vs = 4.5V
Vs = 3V
90
15
170
300
450
300
120
60
20
5
220
1000
380
650
320
110
mW
Distortion (f =1KHz)
d
R
L
= 32 Po = 40mW
R
L
= 16 Po = 75mW
R
L
= 8 Po = 150mW
0.2
0.2
0.2
%
%
%
Close Loop Voltage Gain
Gv
F =1KHz
36
39
41
dB
Channel Balance
Gv
1 dB
Input Resistance
Ri
F =1KHz
100
K
Total Input Noise
N
Rs = 10K B = Curve A
B =22Hz to 22KHz
2
2.5
V
V
Supply Voltage Rejection
SVR
F =100Hz, C1 = C2 = 100F 24
30
dB
Channel Separation
Cs
F =1KHz
50
dB
BRIDGE(test circuit of Figure 2)
Supply Voltage
Vs
1.8
15
V
Quiescent Drain Current
Id
R
L
=
6
9
mA
Output Offset Voltage
(between the outputs)
Vos R
L
= 8
+/-50
mV
Input Bias Current
Ib
100
nA
Output Bias Current
Po
R
L
= 32 Vs = 9V
Vs = 6V
Vs = 4.5V
Vs = 3V
Vs = 2V
R
L
= 16 Vs = 9V
Vs = 6V
Vs = 3V
R
L
= 8 Vs = 6V
Vs = 4.5V
Vs = 3V
R
L
= 4 Vs = 4.5V
Vs = 3V
Vs = 2V
320
50
900
200
1000
400
200
65
8
2000
800
120
1350
700
220
1000
350
80
mW
Output Power (f=1KHz,d=10%)
d
Po =0.5W, R
L
= 8, f =1KHz
0.2
%
Closed Loop Voltage Gain
Gv
F =1KHz
39
dB
Input Resistance
Ri
F =1KHz
100
K
Total Input Noise
e
N
Rs
=10K B =Curve A
B = 22Hz to 22KHz
2.5
3
V
V
Supply Voltage Rejection
SVR
F =100Hz
40
dB
Power Bandwidth (-3dB)
B
R
L
= 8, Po =1W
120
KHz
ELECTRICAL CHARACTERISTICS
(Vs=6V,Tamb=25
, unless otherwise specified)
PJ2822M
Dual Low-Voltage Power Amplifier
3-8
2002/01.ver.A
Figure 1. TEST CIRCUIT (Stereo)
Figure 2. TEST CIRCUIT (Bridge)
Figure 3. TYPICAL APPLICATION IN
PORTABLE PLAYERS
Figure 4. LOW COST APPLICATION IN
PORTABLE PLAYERS
(using only one 100F output capacitor)
PJ2822M
Dual Low-Voltage Power Amplifier
4-8
2002/01.ver.A
Figure 5. PORTABLE RADIO CASSETTE PLAYERS
Figure 6. PORTABLE STEREO RADIO
Type Supply
Voltage
TDA7220
TDA7211A
TEA1330
TDA7282
PJ2822M
1.5V to 6V
1.2V to 6V
3V to 6V
1.5V to 6V
1.8V to 6V
Type Supply
Voltage
TDA7220
TDA7211A
TEA1330
PJ2822M
1.5V to 6V
1.2V to 6V
3V to 6V
1.8V to 6V
PJ2822M
Dual Low-Voltage Power Amplifier
5-8
2002/01.ver.A
Figure 7. APPLICATION IN PORTABLE RADIO RECEIVERS
Figure 8. 3V STEREO CASSETTE PLAYER WITH MOTOR SPEED CONTROL
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