ETC UTC2025

UTC2025
LINEAR INTEGRATED CIRCUIT
STEREO AUDIO AMPLIFIER
DESCRIPTION
The UTC2025 is a monolithic integrated audio amplifier in a
16-pin plastic dual in line package. It is designed for
portable cassette players and radios.
FEATURES
*Working Voltage down to 3V
*Few External components
*High Channel isolation
*Voltage gain up to 45dB(Adjustable with external
resistor)
*Soft clipping
*Internal Thermal protection
DIP-16
BLOCK DIAGRAM
9
10
11
12
13
14
15
50Ω
10kΩ
THERMAL
PROTECT
START
CIRCUIT
5kΩ
8
16
DECOUPLING
50Ω
7
1
10kΩ
50Ω
6
5
4
3
2
ABSOLUTE MAXIMUM RATINGS
Characteristic
Supply Voltage
Output Peak Current
Junction Temperature
Storage Temperature
Symbol
Value
Unit
VS
IO
Tj
Tstg
15
1.5
150
-40+150
V
A
YOUW ANG ELECTRONICS CO.LTD
°
°
1
UTC2025
LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS
(Tamb=25°,VCC=9V,Stereo,Unless otherwise specified)
Parameter
Symbol
Test conditions
Supply Voltage
Quiescent Current
Quiescent output voltage
Voltage gain
VS
IQ
VO
AV
Voltage gain difference
Input impedance
∆AV
Ri
Output Power
Distortion
PO
d
Supply voltage Rejection
Input noise Voltage
Cross-Talk
SVR
Vn
C.T.
Stereo
Bridge
f=1kHz;d=10%
Stereo per channel
VCC=9V;RL=4Ω
RL=8Ω
VCC=6V;RL=4Ω
RL=8Ω
VCC=3V;RL=4Ω
Bridge
VCC=9V;RL=8Ω
VCC=6V;RL=4Ω
VCC=9V;RL=4Ω
f=1kHz;PO=250mW
Stereo
Bridge
RG=0;AV=45dB
Vripple=150mVRMS
Fripple=100Hz
AV=200
Bandwidth:
20Hz to 20kHz
RG=0
RG=10kΩ
RG=10kΩ;
f=1kHz;RL=4Ω
PO=1W
Min
Typ
Max
Unit
3
43
49
40
4.5
45
51
30
12
50
47
53
±1
V
mA
V
dB
1.7
0.7
2.3
1.3
1
0.6
0.1
4.7
2.8
-
0.3
0.5
1.5
-
%
40
46
-
dB
40
1.5
3
55
3
6
-
µV
dB
kΩ
W
dB
THERMAL RESISTANCE
Rth(j-c):Junction to case thermal resistance 15° /W
Rth(j-a):Junction to ambient thermal resistance 60° /w
YOUW ANG ELECTRONICS CO.LTD
2
UTC2025
LINEAR INTEGRATED CIRCUIT
12
11
10
9
5
6
7
8
GND
EEDBACK
IN.2 (+)
SVR
GND (sub
13
4
GND
IN.1 (+)
BOOT.1
GND
14
3
BOOT.2
GND
OUT.1
15
2
OUT.2
+Vs
16
1
BRIDGE
FEEDBAC
PIN CONNECTION
TYPICAL PERFORMANCE CHARACTERISTICS
Distortion versus output power
d(%)
Distortion versus output power
d(%)
10
1
Vcc=6V
RL=8Ω
Vcc=6V
RL=40Ω
1
0.1
0
0.2
0.4
0.6
0.8
1.0
1.2
0
0.2
0.4
0.6
0.8
1.0
1.2
P0(W)
P0(W)
Distortion versus output Frequency
Output power/versus supply voltage
8
10
d(%)
Po(W)
6
Vcc=9V
RL=9Ω
Po=1.5W
f=1kHz
d=10%
RL=4Ω
4
1
2
0.1
0
10
100
1k
10k
f(Hz) 100k
0
4
YOUW ANG ELECTRONICS CO.LTD
8
12
Vcc(V)
3
UTC2025
LINEAR INTEGRATED CIRCUIT
APPLICATION CIRCUITS
Vcc
Vcc
100µF
100µF
0.22µF
16
10
Vin
100µF
10
100µF
7
RL
8
100µF
470µF
15
11
0.15µF
3
100µF
5
RL
470µF
2
0.15µF
0.15µF
8
4,5,9,12,13
100µF
OUT1
100µF
7
Vin 2
2
1
14
0.22µF
100µF
3
100µF
16
Vin 1
0.15µF
5
100µF
0.22µF
14
15
11
100µF
OUT2
RL
4,5,9,12,13
Fig.6 Stereo Application Fig. 5 Bridge Application
SCHEMATIC DIAGRAM
8
7
I2+
6
I2+Vs
16
3
OUT 2
2
GND
4
9
5
I1+
10
11
I114
OUT 1
15
12
1
13
YOUW ANG ELECTRONICS CO.LTD
4