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TDA7396

45W/2Ω BRIDGE CAR RADIO AMPLIFIER

WITH DIAGNOSTIC FACILITY

HIGH POWER CAPABILITY:

- 65W/2

Ω

MAX

- 60W/2

Ω

EIAJ

- 45W/2

Ω

@ V

= 14.4V, f = 1KHz, d = 10%

DIFFERENTIAL INPUTS (EITHER SINGLE

ENDED OR DIFFERENTIAL INPUT SIGNALS

ARE ACCEPTED)

MINIMUM EXTERNAL COMPONENT COUNT:

- NO BOOTSTRAP CAPACITORS

- NO BOUCHEROT CELLS

- INTERNALLY FIXED GAIN (26dB)

- NO SVR CAPACITOR

ST.-BY FUNCTION (CMOS COMPATIBLE)

AUTOMATIC MUTE DURING TURN-ON/OFF

AUTOMUTE AT MINIMUM SUPPLY

VOLTAGE DETECTION

SYNCHRONIZING PIN FOR SIMULTANEOUS

TURN-ON IN MULTI-DEVICE APPLICATIONS

NO AUDIBLE POP DURING MUTE AND ST-

BY OPERATIONS

Diagnostic Facilities:

CLIPPING DETECTOR

SHORT CIRCUIT

OPEN LOAD

THERMAL SHUTDOWN

PROTECTIONS:

SHORT CIRCUIT (TO GND, TO V

ACROSS

THE LOAD)

VERY INDUCTIVE LOADS

CHIP OVER-TEMPERATURE

LOAD DUMP

OPEN GND

ESD

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

September 2013

IN-

0.22µF

IN+

STANDBY

TO µC or V

10 6

OUT+

OUT-

Vref

CD-DIA

TDA7396

D93AU004

10KΩ

1000µF

GND

51KΩ

10µF

100nF

TO µC

Figure 1: Test And Application Circuit

Multiwatt11

ORDERING NUMBER:

TDA7396

1/11

Summary of content (11 pages)

PAGE 1
TDA7396 ® 45W/2Ω BRIDGE CAR RADIO AMPLIFIER WITH DIAGNOSTIC FACILITY HIGH POWER CAPABILITY: - 65W/2Ω MAX - 60W/2Ω EIAJ - 45W/2Ω @ VS = 14.4V, f = 1KHz, d = 10% DIFFERENTIAL INPUTS (EITHER SINGLE ENDED OR DIFFERENTIAL INPUT SIGNALS ARE ACCEPTED) MINIMUM EXTERNAL COMPONENT COUNT: - NO BOOTSTRAP CAPACITORS - NO BOUCHEROT CELLS - INTERNALLY FIXED GAIN (26dB) - NO SVR CAPACITOR ST.
PAGE 2
TDA7396 DESCRIPTION The TDA7396 is a BRIDGE class AB audio power amplifier especially intended for car radio High Power applications. The 2Ω power capability together with the possibility to operate either in DIFFERENTIAL INPUT MODE or SINGLE ENDED INPUT MODE makes it suitable for boosters and high end car radio ap- plications. The exclusive fully complementary output stage and the internally fixed gain configuration drop the external component count.
PAGE 3
TDA7396 ABSOLUTE MAXIMUM RATINGS Symbol VS VOP VPEAK IO Ptot Tstg, Tj Parameter Value Unit DC Supply Voltage Operating Supply Voltage 28 18 V V Peak Supply Voltage (t = 50ms) 50 V Output Peak Current repetitive (f > 10Hz) Output Peak Current non repetitive 6 7 A A 43 -40 to 150 °C Power Dissipation (TCASE = 85°C) Storage and Junction-Case W ELECTRICAL CHARACTERISTICS (VS = 14.
PAGE 4
TDA7396 FUNCTIONAL DESCRIPTION Pin Function 1, 2 INPUTS 4 CD - DIA Description The input stage is a high impedance differential type also capable of operation in single ended mode with one input capacitively coupled to the signal GND. the impedance seen by the inverting and non inverting input pins must be matched.
PAGE 5
TDA7396 Figure 4: Quiescent Current vs Supply Voltage Figure 5: EIAJ power vs Supply Voltage RL = 2Ω RL = 4Ω Figure 6: Output Power vs Supply Voltage (RL =2Ω) RL = 2Ω f = 1KHz Figure 7: Distortion vs Frequency (RL =2Ω) VS = 14.4V RL = 2Ω PO = 18W f (Hz) Figure 8: Output Power vs Supply Voltage (RL =4Ω) RL = 4Ω f = 1KHz Figure 9: Distortion vs Frequency (RL =4Ω) VS = 14.
PAGE 6
TDA7396 Figure 10: Supply Voltage Rejection vs Frequency Figure 11: Common Mode Rejection vs. Frequency VS = 14.4V Vr = 1Vrms RL = 2Ω Rg = 0 f (Hz) Figure 12: Total Power Dissipation & Efficiency vs. Output Power (RL = 2Ω) VS = 14.4V Vcm = 1Vrms RL = 2Ω Rg = 0 f (Hz) Figure 13: Total Power Dissipation & Efficiency vs. Output Power (RL = 4Ω) VS = 14.4V RL = 2Ω f = 1KHz VS = 14.
PAGE 7
TDA7396 Figure 14: Application Circuit +VS C5 100nF C2 0.22µF IN+ 2 3 9 7 C1 0.22µF IN- 1 J1 VS SW1 ST-BY C3 10µF 8 11 TDA7396 10 5 6 R2 51KΩ D93AU108 4 C4 1000µF OUT+ OUT- 5V CD-DIA R3 100KΩ TO µC R1 15KΩ GND C6 100nF Figure 15: P.C.
PAGE 8
TDA7396 CLIPPING DETECTION & DIAGNOSTICS (see fig. 16) An active pull-down circuit is provided to signal out the occurrence of any of the conditions described later. In order to use this function, the CDDIA pin (#4) has to be resistively connected to a positive voltage reference (between 5V and Vs). A) Clipping Detection Current is sunk whenever the output clipping distortion level reaches a fixed 0.5% threshold; this function allows gain compression facility when the amplifier is overdriven.
PAGE 9
TDA7396 Figure 17: Thermal Protection & Diagnostic Waveforms MAX OUTPUT VOLTAGE SWING LINEAR THERMAL SHUT DOWN ABS THERMAL SHUTDOWN 0 140˚C 160˚C DIAGNOSTICS OUTPUT (pin 4) D93AU006A 9/11
PAGE 10
TDA7396 mm DIM. MIN. TYP. inch MAX. MIN. TYP. MAX. A 5 0.197 B 2.65 0.104 C 1.6 D 0.063 1 E 0.49 0.039 0.55 0.019 0.022 F 0.88 0.95 0.035 G 1.45 1.7 1.95 0.057 0.067 0.077 G1 16.75 17 17.25 0.659 0.669 0.679 H1 19.6 0.037 0.772 H2 20.2 0.795 L 21.9 22.2 22.5 0.862 0.874 0.886 L1 21.7 22.1 22.5 0.854 0.87 0.886 L2 17.4 18.1 0.685 L3 17.25 17.5 17.75 0.679 0.689 0.699 L4 10.3 10.7 10.9 0.406 0.421 0.429 L7 2.65 2.9 0.104 0.
PAGE 11
TDA7396 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale.