TDA7391现货热卖使用介绍供应商报价哪里找芯片批发报价-中国IC网-芯三七

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产品型号TDA7391的概述

TDA7391芯片概述 TDA7391是一款非常流行的音频功率放大器芯片，主要用于高保真音频系统。这款芯片的设计目的是为了提供高的音频质量和较大的功率输出，使其广泛应用于家庭音响系统、汽车音响、便携式音响设备等。TDA7391采用了一种集成电路的形式，可以有效降低系统设计的复杂度，为制造商提供了一种简便而有效的解决方案。芯片详细参数 TDA7391具有多种特点和技术参数，使其成为音频应用中的热门选择。以下是TDA7391的一些关键技术参数： - 工作电压范围：通常为9V至18V，适配多种电源。 - 输出功率：在某些特定条件下，TDA7391能够提供高达25瓦的输出功率。 - 总谐波失真（THD）：在额定功率输出条件下，THD小于1%，能够确保音频信号的纯净性。 - 信噪比（SNR）：通常在100dB以上，确保静音状态下的背景噪声较低。 - 工作温度范围：可以在-40°C至+85°C的...

产品型号TDA7391的Datasheet PDF文件预览

TDA7391

35W BRIDGE CAR RADIO AMPLIFIER

HIGH POWER CAPABILITY:

40W/4Ω MAX

35W/4Ω EIAJ

45W/3.2Ω MAX

40W/3.2 EIAJ

Ω

32W/3.2 @ V^S= 14.4V, f = 1KHz, d = 10%

Ω

26W/4Ω @ V^S= 14.4V, f = 1KHz, d = 10%

DIFFERENTIAL INPUTS (EITHER SINGLE

ENDED OR DIFFERENTIAL INPUT SIGNAL

ARE ACCEPTED)

Multiwatt11

ORDERING NUMBER: TDA7391

MINIMUM EXTERNAL COMPONENTCOUNT:

- NO BOOTSTRAPCAPACITORS

- NO BOUCHEROT CELLS

ESD

- INTERNALLY FIXED GAIN (30dB)

- NO SVR CAPACITOR

DESCRIPTION

ST.-BY FUNCTION (CMOS COMPATIBLE)

PROGRAMMABLE TURN-ON/OFF DELAY

NO AUDIBLE POP DURING MUTE AND ST-

BY OPERATIONS

The TDA7391 is a BRIDGE class AB audio power

amplifier specially intended for car radio High

Power applications.

The high power capability together with the possi-

bility to operate either in DIFFERENTIAL INPUT

MODE or SINGLE ENDED INPUT MODE makes

it suitable for boosters and high end car radio

equipments.

The exclusive fully complementary output stage

and the internal fixed gain configuration drop the

external component count.

The on board clipping detector allows easy imple-

mentation of gain compression systems.

PROTECTIONS:

SHORT CIRCUIT (TO GND, TO V_S,ACROSS

THE LOAD)

VERYINDUCTIVE LOADS

CHIP OVERTEMPERATURE

LOAD DUMP

OPEN GND

Figure 1: Test And Application Circuit

C5 100nF

C4 1000µF

C2 0.22µF

IN+

IN-

OUT+

C1 0.22µF

OUT-

TDA7391

Vref

4.7KΩ

V_S

SW1

ST-BY

TO µC

GND

33µF

56KΩ

D94AU133

October 1998

1/8

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

TDA7391

Figure 2: Block Diagram

V_CC1V_CC2

SHORT CIRCUIT

DUMP & THERMAL

PROTECTION

REFERENCES

STANDBY THRESHOLD

IN-

OUT-

POWER AMP

COMMON

MODE

ICM

LTS

V=f (Tj)

DISABLE

V_CC/2

POWER AMP

OUT+

IN+

THD

DETECT

V_S

PROGRAMMABLE

CURRENT CIRCUIT

MUTE THRESHOLD

MUTE

SYNC

GND

STANDBY

D94AU134

PIN CONNECTION (Topview)

MUTE

SYNC

+V_S

STAND-BY

OUT+

GND

OUT-

+V_S

IN+

IN-

D94AU135

TAB CONNECTED TO PIN 6

THERMAL DATA

Symbol

Description

Thermal Resistance Junction-case

Value

Unit

R_{th j-case}

Max

1.8

C/W

2/8

TDA7391

ABSOLUTE MAXIMUM RATINGS

Symbol

Parameter

Value

Unit

V_S

V_OP

V_PEAK

I_O

DC Supply Voltage

Operating Supply Voltage

Peak Supply Voltage (t = 50ms)

Output Peak Current repetitive (f > 10Hz)

Output Peak Current non repetitive

4.5

P_tot

Power Dissipation (T_CASE= 85 C)

T_stg, T_j

Storage and Junction-Case Temperature

-40 to 150

ELECTRICAL CHARACTERISTICS (V_S= 14.4V; R_L= 4Ω, f = 1KHz, T_amb= 25°C, unless otherwise

specified)

Symbol

V_S

Parameter

Supply Voltage Range

Total Quiescent Current

Output Offset Voltage

ST-BY Current

Test Condition

Min.

Typ.

Max.

Unit

I_q

150

120

100

V_OS

I_SB

V_ST-BY= 1.5V

I_SBin

V_SBon

V_SBoff

ATT_ST-BY

I_{M in}

ST-BY Input Bias Current

ST-BY On Threshold Voltage

ST-BY Off threshold Voltage

ST-BY Attenuation

V_ST-BY= 5V

1.5

3.5

Mute Input Bias Current

Mute Attenuation

(V_MUTE= 5V)

A_M

P_O

Output Power

d = 10%

d = 1%

d = 10%; R_L= 3.2Ω

P_{O EIAJ}

P_{O MAX}

EIAJ Output Power (*)

MAX Output Power (*)

Distortion

VS = 13.7V; R = 3.2

Ω

VS = 14.4V; R = 3.2

Ω

0.06

0.03

_O= 0.1 to 15W

G_V

f_H

Voltage Gain

29.5

30.5

KHz

KΩ

High Frequency rolloff

Input Impedance

P_O= 1W; -3dB

Differential

R_IN

Single Ended

Ω

E_IN

CMRR

SVR

CDL

T_sd

Input Noise Voltage

R = 0 ; f = 22Hz to 22KHz

Ω

Input Common Mode Rejection

Supply Voltage Rejection

Clipping Detection Level

f = 1KHz; V_IN= 1Vrms

160

R_g= 0Ω; V_r= 1Vrms

Absolute Thermal Shutdown

Junction Temperature

(*) Saturated sqare wave output.

3/8

TDA7391

FUNCTIONAL DESCRIPTION

1, 2

3,9

Function

INPUTS

+V_S

Description

The input stage is a high impedance 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.

Supply Voltage.

The TDA7391 is equipped with a diagnostic circuitry able to detect the clipping in the

Output Signal (distortion = 10%).

The CD pin (open collector) gives out low level signal during clipping.

The output stage is a bridge type able to drive loads as low as 3.2Ω.

It consists of two class AB fully complementary PNP/NPN stages fully protected.

A rail to rail output voltage swing is achieved without need of bootstrap capacitors.

No external compensation is necessary.

5, 7

OUTPUTS

GND

Ground.

The device features a ST-BY function which shuts down all the internal bias supplies

when the ST-BY pin is low.

In ST-BY mode the amplifier sinks a small current (in the range of few µA).

STAND-BY

When the ST-BY pin is high the IC becomes fully operational.

A resistor (R₂) has to be connect between pin 10 and GND in order to program the current

that flows in the C₃capacitor (pin 11). The values of C₃and R₂determine the time

required to bias the amplifier.

SYNC

MUTE

The pin will have a capacitor (C₃) tied to GND to set the MUTE/STAND-BY time. An

automatic Mute during turn on/off is provided to prevent noisy transients.

Figure 3: P.C. Board and Component Layout of the Fig. 1 (1:1 scale).

4/8

TDA7391

Figure 4: Quiescent Current vs Supply Voltage

Figure 5: EIAJ power vs Supply Voltage

R = 3.2

Ω

R = 4

Ω

Figure 7: Distortion vs Frequency(@ R_L= 4Ω)

Figure 6: OutputPowervs SupplyVoltage

(@R_L=4Ω)

V_S= 14.4V

R = 4

f = 1KHz

Ω

R = 4

Ω

_O= 12W

f = (Hz)

Figure 8: OutputPowervs SupplyVoltage

(@R_L=3.2Ω)

Figure 9: Distortion vs Frequency(R_L=4Ω)

V_S= 14.4V

R = 3.2

R_L= 3.2Ω

f = 1KHz

Ω

_O= 15W

f = (Hz)

5/8

TDA7391

Figure 10: Supply VoltageRejection vs Fre-

Figure 11: Common Mode Rejection vs. Fre-

quency

V_S= 14.4V

V_r= 1Vrms

V_S= 14.4V

_cm= 1Vrms

R = 4

Ω

R = 4

Ω

R_g= 0

f = (Hz)

Figure 13: PowerBandwidth

Figure 12: TotalPowerDissipation & Efficiencyvs.

OutputPower(@R_L= 4Ω)

V_S= 14.4V

R_L= 4Ω

V_S= 14.4V

R_L= 4Ω

f = 1KHz

_O= 1W

f = (Hz)

_O(W)

6/8

TDA7391

inch

DIM.

OUTLINE AND

MIN. TYP. MAX. MIN. TYP. MAX.

MECHANICAL DATA

0.197

0.104

0.063

2.65

1.6

0.039

0.49

0.88

1.45

16.75

19.6

0.55 0.019

0.95 0.035

0.022

0.037

1.7

1.95 0.057 0.067 0.077

17.25 0.659 0.669 0.679

0.772

20.2

0.795

21.9

21.7

17.4

22.2

22.1

22.5 0.862 0.874 0.886

22.5 0.854 0.87 0.886

18.1 0.685

0.713

17.25 17.5 17.75 0.679 0.689 0.699

10.3

2.65

4.25

4.73

1.9

10.7

10.9 0.406 0.421 0.429

2.9 0.104 0.114

4.55

5.08

4.85 0.167 0.179 0.191

5.43 0.186 0.200 0.214

2.6

0.075

0.102

0.152

Dia1

1.9

Multiwatt11 V

3.65

3.85 0.144

7/8

TDA7391

Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences

of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is

granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specification mentioned in this publication are

subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products

are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.

The ST logo is a registered trademark of STMicroelectronics

MULTIWATT is a Registered Trademark of SGS-THOMSON Microelectronics

STMicroelectronics GROUP OF COMPANIES

Australia - Brazil - Canada - China - France - Germany - Italy - Japan - Korea - Malaysia - Malta - Mexico - Morocco - The Netherlands -

Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A.

http://www.st.com

8/8

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