UTC TDA7266G-J15-A, TDA7266G-J15-B, TDA7266G-J15-D, TDA7266L-J15-A, TDA7266L-J15-B Schematic [ru]

UNISONIC TECHNOLOGIES CO., LTD

TDA7266 LINEAR INTEGRATED CIRCUIT

7+7W DUAL BRIDGE
AMPLIFIER

 DESCRIPTION

The UTC TDA7266 is a 7+7W dual bridge amplifier specially

designed for TV and Portable Radio applications.

 FEATURES

* Wide Supply Voltage Range (3 ~ 18V)
* Minimum External Components
* No SWR Capacitor
* No Bootstrap
* No Boucherot Cells
* Internally Fixed Gain
* Stand-BY & Mute Functions
* Short Circuit Protection
* Thermal Overload Protection

HZIP-15A

HZIP-15B

 ORDERING INFORMATION

Ordering Number

Lead Free Halogen Free
TDA7266L-J15-A-T TDA7266G-J15-A-T HZIP-15A Tube
TDA7266L-J15-B-T TDA7266G-J15-B-T HZIP-15B Tube
TDA7266L-J15-D-T TDA7266G-J15-D-T HZIP-15D Tube

Package Packing

HZIP-15D

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TDA7266 LINEAR INTEGRATED CIRCUIT

 PIN CONFIGURATION

HZIP-15A

15
14
13
12
11
10

9
8
7
6
5
4
3
2

1

OUT2+
OUT2­Vcc

IN2
N.C.
N.C.

S-GND
PW-GND
STAND-BY(ST-BY)

MUTE
N.C.
IN1
Vcc
OUT1­OUT1+

HZIP-15B

15
14
13
12
11
10

9
8
7
6
5
4
3
2

1

OUT2+
OUT2-

Vcc
IN2

N.C.
N.C.
S-GND
PW-GND
STAND-BY(ST-BY)
MUTE

N.C.

IN1

Vcc
OUT1-

OUT1+

HZIP-15D

15
14
13
12
11
10

9
8
7
6
5
4
3

2
1

OUT 2+
OUT 2­V

CC

IN 2
N.C.
N.C.
S-GND
PW-GND
STAND-BY(ST-BY)
MUTE
N.C.
IN 1
V

CC

OUT 1­OUT 1+

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TDA7266 LINEAR INTEGRATED CIRCUIT

 BLOCK DIAGRAM

Vcc

IN1

ST-BY

IN2

MUTE

0.22µF

0.22µF

PW-GND

S-GND

4

9

V

12

8

7

REF

6

470µF

100nF

133

1

15

14

2

OUT1+

OUT1-

OUT2+

OUT2-

+

-

-

+

+

-

-

+

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TDA7266 LINEAR INTEGRATED CIRCUIT

 ABSOLUTE MAXIMUM RATINGS

PARAMETER SYMBOL RATINGS UNIT
Supply Voltage VCC 20 V
Output Peak Current (internally limited) I

Power Dissipation (TC =70°C)

HZIP-15A / HZIP-15B 33

HZIP-15D
Junction Temperature TJ +125
Operating Junction Temperature TJ 0 ~ +70
Storage Temperature T
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.

Absolute maximum ratings are stress ratings only and functional device operation is not implied.

 THERMAL DATA

PARAMETER SYMBOL RATINGS UNIT

Junction to Case

HZIP-15A / HZIP-15B 1.4

HZIP-15D

2 A

OUT

P

D

20

W

°C
°C

-40 ~ +150

STG

θJC

2.5

°C

°C /W

 ELECTRICAL CHARACTERISTICS(V

=11V, R

CC

=8Ω, f=1kHz, Ta=25°C, unless otherwise specified)

L

PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
Supply Range VCC 3 11 18 V
Output Offset Voltage V

) 120 mV

O(OFF

Total Output Noise Voltage eN A curve, f=20Hz ~ 20kHz 150 μV
Total Quiescent Current IQ 48 65 mA
Input Resistance RIN 25 30 kΩ
Output Power P

Total Harmonic Distortion THD

THD=10% 6.3 7 W

OUT

P

=1W 0.05 0.2 %

OUT

P

=0.1~2W, f=100Hz~15kHz 1 %

OUT

Crosstalk CT 46 60 dB
Closed Loop Voltage Gain Gv 25 26 27 dB
Voltage Gain Matching △Gv 0.5 dB
Supply Voltage Rejection SVR f=100Hz, VR=0.5V 40 56 dB
Thermal Threshold Tt 150

°C

MUTE FUNCTION

Mute Threshold VM

Mute Attenuation A

for VCC>6.4V, V

THD

for V

<6.4V, V

CC

60 80 dB

MUTE

= -30dB 2.3 2.9 4.1 V

OUT

= -30dB

OUT

VCC/2-1.0

VCC/2-0.75

VCC/2-0.5

V

STAND BY FUNCTION

STAND-BY Threshold VT
STAND-BY Current V6=GND I

0.8 1.3 1.8 V

ST-BY

100 μA

ST-BY

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TDA7266 LINEAR INTEGRATED CIRCUIT

 APPLICATION SUGGESTION

For Microprocessor Application

In order to avoid annoying ”Pop-Noise” during Turn-On/Off transients, it is necessary to guarantee the right ST-BY

and MUTE signals sequence. It is quite simple to obtain this function using a microprocessor (Fig 1 and Fig 2).

At first ST-BY signal (from mP) goes high and the voltage across the ST-BY terminal (Pin 7) starts to increase
exponentially. The external RC network is intended to turn-on slowly the biasing circuits of the amplifier, this to
avoid ”POP” and ”CLICK” on the outputs.

When this voltage reaches the ST-BY threshold level, the amplifier is switched-on and the external capacitors in
series to the input terminals (C3, C5) start to charge.

It’s necessary to maintain the mute signal low until the capacitors are fully charged, this to avoid that the device
goes in play mode causing a loud “Pop Noise” on the speakers.

A delay of 100 ~ 200ms between ST-BY and MUTE signals is suitable for a proper operation.

Vcc

µP

ST-BY

IN2

MUTE

IN1

C1

0.22µF

R1

10k

C3

0.22µF

R2

10k

C2
10µF

S-GND

C4
1µF

12

4

7

9

133

1

2

TDA7266

15

6

OUT1+

OUT1-

OUT2+

C5
470µF

C6
100nF

OUT2-

PW-GND

8

14

Fig. 1 Microprocessor Application

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TDA7266 LINEAR INTEGRATED CIRCUIT

 APPLICATION SUGGESTION(Cont.)

+Vcc(V)

+18

IN (mV)

V

V

ST-BY

Pin 7

1.8

1.3

0.8

V

MUTE

Pin 6

Q (mA)

I

OUT (V)

V

4.1

2.9

2.3

OFF

ST-BY

MUTE

PLAY MUTE ST-BY OFF

Fig 2 Microprocessor Driving Signals

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TDA7266 LINEAR INTEGRATED CIRCUIT

 APPLICATION SUGGESTION(Cont.)

For Low Cost Application

In low cost applications where the mP is not present, the suggested circuit is shown in Fig 3.

The ST-BY and mute terminals are tied together and they are connected to the supply line via an external voltage
divider.

The device is switched-on/off from the supply line and the external capacitor C4 is intended to delay the ST-BY
and MUTE threshold exceeding, avoiding “Popping” problems.

Vcc

Vcc

R1
47k

R2
47k

C4
10µF

IN1

IN2

C3

0.22µF

C5

0.22µF

ST-BY

S-GND

12

4

7

9

TDA7266

133

1

2

15

OUT1+

OUT1-

OUT2+

C1
470µF

C2
100nF

MUTE

PW-GND

6

OUT2-

14

8

Fig 3 Stand Alone Low Cost Application

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TDA7266 LINEAR INTEGRATED CIRCUIT

 TYPICAL CHARACTERISTICS

5.0000

4.0000

3.0000

2.0000

1.0000

-1.000

Level (dBr)

-2.000

-3.000

-4.000

-5.000

0.0

10

Vcc=11V
R

I=8O

P

OUT=1W

Gain vs Frequency

10

0

1k

Frequency (Hz)

10k

100k

UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.

Quiescent Current vs Supply Voltage

70

65

60

50

IQ (mA)

45

40

35

30

3

4

7558

5

6910

Vsupply (V)

11

121314 15 16 17 18

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