STMicroelectronics TDA2050 Technical data

®

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

TDA2050

Pentawatt

DESCRIPTION

The TDA 2050 is a monolithic inte grated 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%, V

= ±18V, f = 1KHz and up to 32W into

S

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 V

S

22.5V, f = 1KHz.

TEST AND APPLICATION CIRCUIT

ORDERING NUMBERS:

TDA2050H

TDA2050V

The high power and very low harmonic and cross­over distortion (THD = 0.05% typ, @ VS = ±22V,

= 0.1 to 15W, RL=8ohm, f = 100Hz to 15KHz)

P

O

make the device most suitable for both HiFi and

=

high class TV sets.

March 2002

This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.

1/13

TDA2050

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

V

V
V
I

P

T

stg

Supply Voltage ±25 V

S

Input Voltage V

i

Differential Input Voltage ±15 V

i

Output Peak Current (internally limited) 5 A

O

Power Dissipation T

tot

= 75°C25W

CASE

S

, TjStorage and Junction Temperature -40 to 150 °C

PIN CONNECTION

(Top view)

SCHEMATIC DIAGRAM

THERMAL DATA

Symbol Description Value Unit

Thermal Resistance junction-case Max 3 °C/W

2/13

R

th j-case

TDA2050

ELECTRICAL CHARACTERISTICS

(Refer to the Test Circuit, V

= ±18V, T

S

= 25°C, f = 1 kHz; un-

amb

less otherwise specified)

Symbol Parameter Test Condition Min. Typ. Max. Unit

V

I

I

V

I

OS

P

d Total Harmonic Distortion R

SR Slew Rate 5 8 V/µs
G
G

BW Power Bandwidth (-3dB) R

e

R

SVR Supply Voltage Rejection R

η Efficiency P

T

sd-j

Supply Voltage Range ±4.5 ±25 V

S

Quiescent Drain Current VS = ±4.5V

d

Input Bias Current VS = ±22V 0.1 0.5 µA

b

Input Offset Voltage VS = ±22V ±15 mV

OS

V

= ±25V

S

30
55

Input Offset Current VS = ±22V ±200 nA
RMS Output Power d = 0.5%

O

R

= 4Ω

L

R

= 8Ω

L

V

= ±22V RL = 8Ω

S

24
22

28
18
25

d = 10%
R

= 4Ω

L

R

= 8Ω

L

V

= ±22V RL = 8Ω

S

Music Power
IEC268.3 RULES

Open Loop Voltage Gain 80 dB

V

Closed Loop Voltage Gain 30 30.5 31 dB

V

Total Input Noise curve A

N

d = 10%; T = 1s
V

= ±22.5V; RL = 4Ω 50 W

S

= 4Ω

L

f = 1kHz, P
f = 100H z to 10 kHz, P

= ±22V RL = 8Ω

V

S

f = 1kHz, P
f = 100H z to 10 kHz, P

= 4Ω Vi = 200mV 20 to 80,000 Hz

L

= 0.1 to 24W

O

= 0.1 to 20W

O

O

O

= 0.1 to 18 W

= 0.1 to 15 W

B = 22Hz to 22kHz

Input Resistance (pin 1) 500 kΩ

i

= 22kΩ; f = 100Hz;

s

V

= 0.5Vrms 45 dB

ripple

= 28W; RL = 4Ω 65 %

O

35
22
32

0.03 0.5

0.02

4
510

PO = 25W; RL = 8Ω;
V

= ±22V 67 %

S

Thermal Shut-down

150 °C

Junction Temperature

50
90

0.5

0.5

mA
mA

W
W
W

W
W
W

%
%

%
%

µV
µV

3/13

TDA2050

Figure 1:

Figure 2:

Split Supply Typical Application Circuit

P.C. Board and Components Layout of the Circuit of Fig. 1 (1:1)

4/13

TDA2050

L

R4

R3

R2

C2

R1

C4

C1

Vi

C7

C5

C3

C6

R

+Vs

-Vs