TDA7296SV datasheet(7/11 Pages) STMICROELECTRONICS

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above, the device features a thermal shutdown

circuit which initially puts the device into a muting

state (@ Tj = 150

oC) and then into stand-by (@

Tj = 160

oC).

Full protection against electrostatic discharges on

every pin is included.

3) Other Features

The device is provided with both stand-by and

mute functions, independently driven by two

CMOS logic compatible input pins.

The circuits dedicated to the switching on and off

of the amplifier have been carefully optimized to

avoid any kind of uncontrolled audible transient at

the output.

The sequence that we recommend during the

ON/OFF transients is shown by Figure 4.

The application of figure 5 shows the possibility of

using only one command for both st-by and mute

functions. On both the pins, the maximum appli-

cable range corresponds to the operating supply

voltage.

APPLICATION INFORMATION

BRIDGE APPLICATION

Another application suggestion is the BRIDGE

configuration, where two TDA7296S are used.

In this application, the value of the load must not

be lower than 8 Ohm for dissipation and current

capability reasons.

A suitable field of application includes HI-FI/TV

subwoofers realizations.

The main advantages offered by this solution are:

- High power performances with limited supply

voltage level.

- Considerably high output power even with high

load values (i.e. 16 Ohm).

With Rl= 8 Ohm, Vs =

±23V the maximum output

power obtainable is 120W (Music Power)

1N4148

10K

30K

20K

µF

MUTE

STBY

D93AU014

MUTE/

ST-BY

Figure 5: Single Signal ST-BY/MUTE Control

Circuit

PLAY

OFF

ST-BY

MUTE

ST-BY

OFF

D98AU817

+Vs

(V)

+40

-40

VMUTE

PIN #10

(V)

VST-BY

PIN #9

(V)

-Vs

VIN

(mV)

(mA)

VOUT

(V)

Figure 4: Turn ON/OFF Suggested Sequence

TDA7296S

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