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Электронный компонент: S1T8602B01-D0B0

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LOW VOLTAGE AUDIO AMPLIFIER
S1T8602B
1
INTRODUCTION
The S1T8602B is the audio power amplifier available for low voltages.
S1T8602B supplies differential outputs for maximizing output swing at
low voltages. S1T8602B doesn
'
t need coupling capacitors to the
speaker. The gain of this amp is controlled easily by two external
resistors.
FEATURES
Wide Supply Voltage (2 ~ 16V)
Low Quiescent Supply Current (I
CC
= 2.7mA : Typ)
Easy Gain Control
Medium Output Power
P
O
= 250mW at V
CC
= 6V, R
L
= 32
, THD = 10%
Minimum External Parts
Various Load Impedance Range (8
100
)
Low Distortion
Mute Function (l
CC
= 65
A: Typ)
ORDERING INFORMATION
Device
Package
Operating Temperature
S1T8602B01-D0B0
8
-
DIP
-
300
-
20
C ~ +70
C
S1T8602B01-S0B0
8
-
SOP
-
225
8
-
DIP
-
300
8
-
SOP
-
225
S1T8602B
LOW VOLTAGE AUDIO AMPLIFIER
2
BLOCK DIAGRAM
PIN CONFIGURATION
2
1
-
+
Amp1
4
BIAS CIRCUIT
8
5
-
+
Amp2
INPUT(-)
INPUT(+)
Vcc
RIPPLE
REJECTION
GND
OUTPUT1
OUTPUT2
3
6
7
MUTE
R
R
1
2
3
4
8
7
6
5
KA8602B
INPUT(+)
INPUT(-)
OUTPUT1
Vcc
RIPPLE REJECTION
MUTE
OUTPUT2
GND
S1T8602B
LOW VOLTAGE AUDIO AMPLIFIER
S1T8602B
3
PIN DESCRIPTION
ABSOLUTE MAXIMUM RATINGS
Pin No
Symbol
Description
1
Input (+)
Analog Ground for the amplifiers. A 1.0
F capacitor at this pin (with a 5.0
F capacitor at
pin 8) provides 52dB (Typ) of power supply rejection. Turn-on time of the circuit is affected
by the capacitor on this pin. This pin can be used as an alternative input.
2
Input (
-
)
Amplifier input. The input capacitor and resistor set low frequency roll-off and input
impedance. The feedback resistor is connected between this pin and output1.
3
Output 1
The output of Amplifier 1. DC Level is (V
CC
-- 0.7V)/2.
4
V
CC
DC supply voltage (+2.0 -- + 16V) is applied to this pin.
5
GND
Ground pin.
6
Output 2
The output of Amplifier 2. This signal is equal in amplitude, but 180
out of phase with that
at output1. The DC level is (V
CC
-- 0.7V)/2.
7
Mute
This pin can be used to power down the IC to conserve power or for muting, or both.
When at a logic Low (0 to 0.8 volts), the S1T8602B is enabled for normal operation. When
at a logic High (2.0 to V
CC
volts), the IC is disabled. If Mute is open, that is equivalent to a
logic Low.
8
Ripple Rejection
A capacitor at this pin increases power supply rejection, and affects turn-on time. This pin
can be left open if the capacitor at pin 1 is sufficient.
Characteristic
Symbol
Vale
Unit
Supply Voltage
V
CC
-
1.0
~
+ 18
V
Output Current (output pin)
I
O
250
mA
Maximum Voltage (input, Ripple rejection, Mute pin)
V
I (MAX)
-
1.0
~
V
CC
+ 1.0
V
Applied Output Voltage (output pin) when disabled
V
O
-
1.0 ~ V
CC
+ 1.0
V
Junction Temperature
T
J
-
55 ~ + 140
C
S1T8602B
LOW VOLTAGE AUDIO AMPLIFIER
4
RECOMMENDED OPERATING CONDITIONS
Characteristic
Symbol
Min.
Typ.
Max.
Unit
Supply Voltage
V
CC
+2.0
-
+16
V
Load Impedance
Z
L
8
-
100
W
Peak Load Current
I
L (PK)
-
200
-
200
mA
Differential Gain (5KHz Bandwidth)
G
V
0
-
46
dB
Voltage at Mute (Pin 7)
V
I (MUTE)
0
-
V
CC
V
Ambient Temperature
Ta
-
20
-
470
C
ELECTRICAL CHARACTERISTIC
(V
CC
= 6V, Ta = 25
C, unless otherwise noted)
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Unit
DC ELECTRICAL CHARACTERISTICS
Operating Current (RL = 0)
I
CC
V
CC
= 3.0V, Mute = 0.8V
V
CC
= 16.0V, Mute = 0.8V
-
2.7
3.3
4.0
5.0
mA
V
CC
= 3.0V, Mute = 2.0V
-
65
100
A
Output Voltage (output pin)
V
O
RL = 16
R1 = 75k
V
CC
= 3.0V
V
CC
= 6.0V
V
CC
= 12.0V
1.0
1.15
2.65
5.65
1.25
V
Output Offset Voltage
V
OO
V
CC
= 6.0V, R
f
= 75k
, R
L
= 32
-
30
0
+30
mV
Output High Level
V
OH
2.0V
V
CC
16V, I
out
= -75mA
-
V
CC
-
1.0
-
V
Output Low Level
V
OL
2.0V
V
CC
16V, I
out
= 75mA
-
0.16
-
V
Input Bias Current (pin 2)
I
BIAS
-
-
-
100
-200
nA
Equivalent Resistance
R
EQ
pin 1
pin 8
100
18
150
25
220
40
k
Input Low Voltage
V
IL (MUTE)
-
-
-
0.8
V
Mute
Input High Voltage
V
IH (MUTE)
-
2.0
-
-
V
Input Resistance
R
I (MUTE)
V
CC
= Mute = 16V
50
90
175
k
AC ELECTRICAL CHARACTERISTICS
Open Loop Gain (Amp 1)
G
V (AMP1)
-
80
-
-
dB
Close Loop Gain (Amp 2)
G
V (AMP2)
f = 1.0kHz, R
L
= 32
-
0.35
0
+0.35
dB
Output Power
P
O
V
CC
= 3.0V, R
L
= 6
, THD
10%
V
CC
= 6.0V, R
L
= 32
, THD
10%
V
CC
= 12V, R
L
= 100
, THD
10%
55
250
400
-
-
mW
LOW VOLTAGE AUDIO AMPLIFIER
S1T8602B
5
Total Harmonic Distortion
(f = 1.0kHz)
THD
V
CC
= 6.0V, R
L
= 32
, P
O
=125mW
V
CC
3.0V, R
L
= 8
, P
O
= 20mW
V
CC
12V, R
L
= 32
, P
O
= 200mW
-
0.5
0.5
0.6
1.0
%
Gain Bandwidth Product
GBW
-
-
1.5
-
MHz
Power Supply Rejection
(V
CC
= 6.0V,
V
CC
= 3.0V)
PSRR
C
1
=
, C
2
= 0.01
F
C
1
=0.1
F, C
2
=0, f=1.0kHz
C
1
= 1.0
F, C
2
= 5.0
F, f = 1.0kHz
50
12
52
-
dB
Muting
G
V (MUTE)
Mute = 2.0V, 1.0Khz
f
20kHz
-
> 70
-
dB
ELECTRICAL CHARACTERISTIC (Continued)
(V
CC
= 6V, Ta = 25
C, unless otherwise noted)
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Unit
S1T8602B
LOW VOLTAGE AUDIO AMPLIFIER
6
APPLICATION CIRCUIT
Figure 1.
Figure 2.
2
1
8
5
3
6
4
7
+
+
Audio
Input
0.1
F
R
i
R
f
KA8602B
Vcc
Mute
1
F
5
F
Speaker
S1T8602B
2
1
8
5
3
6
4
7
+
+
Audio
Input
0.1
F
KA8602B
Vcc
Mute
0.1
F
5
F
Speaker
3K
75K
S1T8602B
LOW VOLTAGE AUDIO AMPLIFIER
S1T8602B
7
Figure 3.
Figure 4.
2
1
8
5
3
6
4
7
Audio
Input
0.1
F
3K
75K
KA8602B
Vcc(1.0 ~8.0V)
Speaker
V
EE
( -1.0 ~ -8.0V)
10K
20K
20K
4.7K
Vcc
Mute
S1T8602B
2
1
8
5
3
6
4
7
+
Audio
Input
0.1
F
KA8602B
Vcc
Mute
5
F
Speaker
5.1K
75K
503
503
5.1K
S1T8602B
S1T8602B
LOW VOLTAGE AUDIO AMPLIFIER
8
Figure 5.
2
1
8
5
3
6
4
7
+
Audio
Input
0.1
F
KA8602B
Vcc
Mute
5
F
Speaker
5.1K
100K
503
503
5.1K
100K
101
100
S1T8602B