Amplificador De Audio Tea 2025B

TEA2025B
TEA2025D
STEREO AUDIO AMPLIFIER
DUAL OR BRIDGE CONNECTION MODES
FEW EXTERNAL COMPONENTS
SUPPLY VOLTAGE DOWN TO 3V
HIGH CHANNEL SEPARATION
VERY LOW SWITCH ON/OFF NOISE
MAX GAIN OF 45dB WITH ADJUST EXTERNAL RESISTOR
SOFT CLIPPING
THERMAL PROTECTION
3V < VCC < 15V
P = 2 • 1W, VCC = 6V, RL = 4Ω
P = 2 • 2.3W, VCC = 9V, RL = 4Ω
P = 2 • 0.1W, VCC = 3V, RL = 4Ω

POWERDIP 12+2+2SO20 (12+4+4)

ORDERING NUMBERS: TEA2025B (PDIP)
TEA2025D (SO)

DESCRIPTION
The TEA2025B/D is a monolithic integrated circuit
in 12+2+2 Powerdip and 12+4+4 SO, intended for
use as dual or bridge power audio amplifier portable radio cassette players.

ABSOLUTE MAXIMUM RATINGS
Symbol

Parameter

Test Conditions

Unit

VS

Supply Voltage

15

V

IO

Ouput Peak Current1.5

A

TJ

Junction Temperature

150

°C

Tstg

Storage Temperature

150

°C

BLOCK DIAGRAM
GND(Sub) IN 1+ FEED

THERMAL
PROTECT.

GND

50Ω

+

START
CIRCUIT

GND

BOOT 1

OUT 1

10KΩ

1

1
5KΩ
DECOUPLING

SVR

VS+
BRIDGE

-

IN 2+

+

2

2

50Ω

10KΩ

50Ω
D94AU120

June 1994

FEED

GND

GND

BOOT 2

OUT 2

1/9TEA2025B - TEA2025D
POWERDIP 12+2+2 PIN CONNECTION (Top view)

BRIDGE

1

16

+Vs

OUT.2

2

15

OUT.1

BOOT.2

3

14

BOOT.1

GND

4

13

GND

GND

5

12

GND

6

11

FEEDBACK

7

10

IN.1 (+)

8

9

FEEDBACK
IN.2 (+)
SVR

GND (sub.)

SO 12+4+4 PIN CONNECTION (Top view)

BRIDGE

1

20

VCC

OUT 2

2

19

OUT 1BOOT 2

3

18

BOOT 1

GND

4

17

GND

GND

5

16

GND

GND

6

15

GND

GND

7

14

GND

FEEDBACK

8

13

FEEDBACK

IN 2(+)

9

12

IN 1(+)

10

11

GND(Sub)

SVR

D94AU119

THERMAL DATA
Symbol
R th j-case
Rth j-amb

Description
Thermal Resistance Junction-case
Thermal Resistance Junction-ambient

SO 12+4+4 (*)
Max
MaxPDIP 12+2+2 (**)

Unit

15
65

15
60

°C/W
°C/W

(*) The Rth j-amb is measured with 4sq cm copper area heatsink
(**) The Rth j-amb is measured on devices bonded on a 10 x 5 x 0.15cm glass-epoxy substrate with a 35µm thick copper surface of 5 cm2.

2/9

TEA2025B - TEA2025D
ELECTRICAL CHARACTERISTICS (Tamb = 25°C, VCC = 9V, Stereo unless otherwise specified)
SymbolParameter

Test Conditions

Min.

Typ.

VS

Supply Voltage

IQ

Quiescent Current

35

VO

Quiescent Output Voltage

3

Voltage Gain

∆ AV

Voltage Gain Difference

Rj
PO

Input Impedance

Unit

4.5

AV

Max.

Stereo
Bridge

43
49

SVR
EN(IN)
CT

Output Power (d = 10%)

9V
9V
6V
6V
6V
6V
3V
3V
12V

V

45
51

47
53

dB
dB

2.31.3
1
0.6
0.25
0.13
0.1
0.02
2.4

8Ω
4Ω
8Ω
16Ω
32Ω

1.7
0.7

Stereo
Bridge

Supply Voltage Rejection

RG = 0
R G = 10 4Ω

Cross-Talk

W

W

1.5

0.3
0.5

f = 100Hz, VR = 0.5V, Rg = 0

Input Noise Voltage

KΩ

4.7
2.8
1.5
0.18
0.06

4Ω
8Ω
4Ω
8Ω
16Ω
32Ω
4Ω
32Ω
8Ω

9V
6V
6V
3V
3V

Stereo 8 (per channel)

Vs = 9V; RL = 4Ω

f = 1KHz, Rg= 10KΩ

DC VOLT (V)

mA

±1

Distortion

Term. N° (PDIP)

V

50

30

Bridge

d

12

40

46

40

1.5
3
52

%
dB

3
6

mV
dB

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

0.04

4.5

8.9

0

0

0.6

0.04

8.5

0

0.04

0.6

0

0

8.9

4.5

9

Figure 1: Bridge Application (Powerdip)Figure 2: Stereo Application (Powerdip)

C1
C10

C6
C4
C8

C2

C5
C7

C11
C9
C3

3/9

TEA2025B - TEA2025D
Figure 3: Supply Current vs. Supply Voltage
(RL = 4Ω)

Figure 4: Output Voltage vs. Supply Voltage

I(mA)

Vo(V)

8

50

7
6

40

5
4

30

3
2

20

STEREO

1

STEREO

0

10
3

6

9

12

15

3

6

9

12

15

Vs(V)...