TDA2050
32W Hi-Fi AUDIO POWER AMPLIFIER
HIGH OUTPUT POWER
(50W MUSIC POWER IEC 268.3 RULES) HIGH OPERATING SUPPLY VOLTAGE (50V) SINGLE OR SPLIT SUPPLY OPERATIONS VERY LOW DISTORTION
SHORT CIRCUIT PROTECTION (OUT TO GND)
THERMAL SHUTDOWN
DESCRIPTION
The TDA 2050 is a monolithic integrated circuit in Pentawatt package, intended for use as an audio class AB audio amplifier. Thanks to its high power capability the TDA2050 is able to provide up to 35W true rms power into 4 ohm load @ THD = 10%, VS = ±18V, f = 1KHz and up to 32W into 8ohm load @ THD = 10%, VS = ±22V, f = 1KHz.
Moreover, the TDA 2050 delivers typically 50W music power into 4 ohm load over 1 sec at VS= 22.5V, f = 1KHz.
Pentawatt
ORDERING NUMBERS: TDA2050V
TDA2050H
The high power and very low harmonic and crossover distortion (THD = 0.05% typ, @ VS = ±22V, PO = 0.1 to 15W, RL=8ohm, f = 100Hz to 15KHz) make the device most suitable for both HiFi and high class TV sets.
TEST AND APPLICATION CIRCUIT
March 1995 |
1/13 |
TDA2050
ABSOLUTE MAXIMUM RATINGS
Symbol |
Parameter |
Value |
Unit |
VS |
Supply Voltage |
±25 |
V |
Vi |
Input Voltage |
VS |
|
Vi |
Differential Input Voltage |
±15 |
V |
IO |
Output Peak Current (internally limited) |
5 |
A |
Ptot |
Power Dissipation TCASE = 75°C |
25 |
W |
Tstg, Tj |
Storage and Junction Temperature |
-40 to 150 |
°C |
PIN CONNECTION (Top view)
SCHEMATIC DIAGRAM
THERMAL DATA
Symbol |
Description |
|
Value |
Unit |
Rth j-case |
Thermal Resistance junction-case |
Max |
3 |
°C/W |
2/13
TDA2050
ELECTRICAL CHARACTERISTICS (Refer to the Test Circuit, VS = ±18V, Tamb = 25°C, f = 1 kHz; unless otherwise specified)
Symbol |
Parameter |
Test Condition |
Min. |
Typ. |
Max. |
Unit |
VS |
Supply Voltage Range |
|
±4.5 |
|
±25 |
V |
Id |
Quiescent Drain Current |
VS = ±4.5V |
|
30 |
50 |
mA |
|
|
VS = ±25V |
|
55 |
90 |
mA |
Ib |
Input Bias Current |
VS = ±22V |
|
0.1 |
0.5 |
μA |
VOS |
Input Offset Voltage |
VS = ±22V |
|
|
±15 |
mV |
IOS |
Input Offset Current |
VS = ±22V |
|
|
±200 |
nA |
PO |
RMS Output Power |
d = 0.5% |
|
|
|
|
|
|
RL = 4Ω |
24 |
28 |
|
W |
|
|
RL = 8Ω |
|
18 |
|
W |
|
|
VS = ±22V RL = 8Ω |
22 |
25 |
|
W |
|
|
d = 10% |
|
|
|
|
|
|
RL = 4Ω |
|
35 |
|
W |
|
|
RL = 8Ω |
|
22 |
|
W |
|
|
VS = ±22V RL = 8Ω |
|
32 |
|
W |
|
Music Power |
d = 10%; T = 1s |
|
|
|
|
|
IEC268.3 RULES |
VS = ±22.5V; RL = 4Ω |
|
50 |
|
W |
d |
Total Harmonic Distortion |
RL = 4Ω |
|
|
|
|
|
|
f = 1kHz, PO = 0.1 to 24W |
|
0.03 |
0.5 |
% |
|
|
f = 100Hz to 10kHz, PO = 0.1 to 18W |
|
|
0.5 |
% |
|
|
VS = ±22V RL = 8Ω |
|
|
|
|
|
|
f = 1kHz, PO = 0.1 to 20W |
|
0.02 |
|
% |
|
|
f = 100Hz to 10kHz, PO = 0.1 to 15W |
|
|
0.5 |
% |
SR |
Slew Rate |
|
5 |
8 |
|
V/μs |
GV |
Open Loop Voltage Gain |
|
|
80 |
|
dB |
GV |
Closed Loop Voltage Gain |
|
30 |
30.5 |
31 |
dB |
BW |
Power Bandwidth (-3dB) |
RL = 4Ω Vi = 200mV |
|
20 to 80,000 |
|
Hz |
eN |
Total Input Noise |
curve A |
|
4 |
|
μV |
|
|
B = 22Hz to 22kHz |
|
5 |
10 |
μV |
Ri |
Input Resistance (pin 1) |
|
500 |
|
|
kΩ |
SVR |
Supply Voltage Rejection |
Rs = 22kΩ; f = 100Hz; |
|
|
|
|
|
|
Vripple = 0.5Vrms |
|
45 |
|
dB |
η |
Efficiency |
PO = 28W; RL = 4Ω |
|
65 |
|
% |
|
|
PO = 25W; RL = 8Ω; |
|
|
|
|
|
|
VS = ±22V |
|
67 |
|
% |
Tsd- j |
Thermal Shut-down |
|
|
150 |
|
°C |
|
Junction Temperature |
|
|
|
|
|
3/13
TDA2050
Figure 1: Split Supply Typical Application Circuit
Figure 2: P.C. Board and ComponentsLayout of the Circuit of Fig. 1 (1:1)
TDA2050
R L
|
R4 |
|
R3 |
+Vs |
|
R2 |
||
C7 |
||
|
||
C2 |
C5 |
|
C3 |
||
|
||
R1 |
|
|
C4 |
C6 |
|
C1 |
|
Vi |
-Vs |
|
4/13
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