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产品型号TDA7388A的概述

芯片TDA7388A的概述 TDA7388A是一款由意法半导体（STMicroelectronics）推出的高性能音频功率放大器芯片。它主要用于汽车音响系统以及其他消费电子设备中，凭借其出色的音质和高效的功率放大能力，TDA7388A成为众多设计师的首选。该芯片集成了多种功能，包括增益控制和保护电路，旨在满足现代汽车音频系统对低失真和高输出功率的需求。这一芯片的设计涉及多个关键参数的选择，使其在较大范围的供电电压内表现稳定，并能在广泛的温度条件下运行。此外，TDA7388A支持多种音频输入方式，使其更具灵活性，能够适应不同的音频源。该芯片的目标应用不仅仅局限于汽车电子，也可广泛应用于家用音响、便携式音频设备等领域。芯片TDA7388A的详细参数 TDA7388A的主要参数如下： 1. 输出功率：可提供4Ω负载下18W的输出功率，要求通道数量为两通道（立体声）。 2. 供电电...

产品型号TDA7388A的Datasheet PDF文件预览

TDA7388A

4 x 42W quad bridge car radio amplifier

Preliminary Data

Features

■ High output power capability:

– 4 x 42W/4Ω max.

– 4 x 27W/4Ω @ 14.4V, 1KHz, 10%

■ Low distortion

■ Low output noise

■ St-by function

Flexiwatt27

■ Mute function

■ Automute at min. supply voltage detection

■ Low external component count:

– Internally fixed gain (26dB)

– No external compensation

– No bootstrap capacitors

■ Fortuitous open gnd

■ Output DC offset detector

■ Reversed battery

■ ESD

■ Clipping detector

■ Offset detector

■ Diagnostic facility for:

– Out to GND short

– Out to V_Sshort

Description

– Thermal shutdown

The TDA7388A is a new technology class AB

audio power amplifier in Flexiwatt 27 package

designed for high end car radio applications.

Protections:

■ Output short circuit to gnd, to V_S, across the

Thanks to the fully complementary PNP/NPN

output configuration the TDA7388A allows a rail to

rail output voltage swing with no need of bootstrap

capacitors. The extremely reduced components

count allows very compact sets.

load

■ Very inductive loads

■ Overrating chip temperature with soft thermal

limiter

■ Load dump voltage

The TDA7388A is also equipped with Clipping

detector and Offset detector features.

Table 1.

Device summary

Order code

Package

Flexiwatt27

Packing

TDA7388A

Tube

December 2007

Rev 1

1/13

This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to

change without notice.

www.st.com

Contents

TDA7388A

Contents

Pins connection and test/application diagrams . . . . . . . . . . . . . . . . . . . 5

Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.1

2.2

2.3

2.4

Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Electrical characteristic curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.1

3.2

3.3

SVR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Input stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Stand-by and Muting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2/13

TDA7388A

List of tables

Table 1.

Table 2.

Table 3.

Table 4.

Table 5.

Device summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3/13

List of figures

TDA7388A

List of figures

Figure 1.

Figure 2.

Figure 3.

Figure 4.

Figure 5.

Figure 6.

Figure 7.

Figure 8.

Figure 9.

Pins connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Standard test and application circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Quiescent current vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Output power vs. supply voltage (4 Ohm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Distortion vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Distortion vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Supply voltage rejection vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Crosstalk vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Output noise vs. source resistance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 10. Power dissipation & efficiency vs. output power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 11. ITU R-ARM frequency response, weighting filter for transient pop. . . . . . . . . . . . . . . . . . . . 9

Figure 12. Flexiwatt27 mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4/13

TDA7388A

Pins connection and test/application diagrams

Figure 1.

Pins connections

FLEX27_O

Figure 2.

Standard test and application circuit

OFFSET

DETECTOR

47K

0.1μF

2200μF

Vcc1-2

Vcc3-4

10K

ST-BY

MUTE

1μF

OUT1

47K

C10

1μF

OUT2

OUT3

OUT4

IN1

IN2

IN3

IN4

0.1μF

C2 0.1μF

C3 0.1μF

C4 0.1μF

S-GND

SVR

1, 27

TAB

0.47μF

47K

47μF

D05AU1614MOD1

CD OUT

5/13

Electrical specifications

TDA7388A

Electrical specifications

2.1

Absolute maximum ratings

Table 2.

Symbol

Absolute maximum ratings

Parameter

Value

Unit

V_S

Operating supply voltage

DC supply voltage

V_{S (DC)}

V_{S (pk)}

Peak supply voltage (t = 50ms)

Output peak current:

I_O

Repetitive (duty cycle 10% at f = 10Hz)

Non repetitive (t = 100μs)

4.5

5.5

P_tot

T_j

Power dissipation, (T_case= 70°C)

Junction temperature

150

°C

T_stg

Storage temperature

– 55 to 150

2.2

Thermal data

Table 3.

Symbol

Thermal data

Parameter

Value

Unit

R_{th j-amb}Thermal resistance junction to ambient

max.

°C/W

2.3

Electrical characteristics

Table 4.

Electrical characteristics

(V = 14.4V; f = 1KHz; R = 600Ω; R = 4Ω;T = 25°C; Refer to the test and application

amb

diagram (Figure 2), unless otherwise specified.)

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

I_q1

Quiescent current

R_L= ∞

100

190

350

100

V_OS

Output offset voltage

Play mode

During mute ON/OFF output

offset voltage

-10

+10

+50

ITU R-ARM weighted

dV_OS

see Figure 11

During St-By ON/OFF

output offset voltage

-50

G_v

ΔG_v

P_o

Voltage gain

Channel gain unbalance

Output power

THD = 10%; V_S= 14.4V

V_S= 14.4V

P_{o max}

Max.output power⁽¹⁾

6/13

TDA7388A

Table 4.

Electrical specifications

Electrical characteristics (continued)

(V = 14.4V; f = 1KHz; R = 600Ω; R = 4Ω;T = 25°C; Refer to the test and application

amb

diagram (Figure 2), unless otherwise specified.)

Parameter Test condition

Distortion

Symbol

Min.

Typ.

Max.

Unit

THD

P_o= 4W

0.04

0.10

μV

KHz

KΩ

μA

"A" Weighted

e_No

Output noise

Bw = 20Hz to 20KHz

f = 100Hz; V_r= 1V_rms

P_o= 0.5W

100

SVR

f_ch

Supply voltage rejection

High cut-off frequency

Input Impedance

100

200

100

R_i

f = 1KHz; Po = 4W

f = 10KHz; Po = 4W

V_St-By= 0V

C_T

Cross talk

I_SB

I_pin4

St-By current consumption

St-By pin current

V_St-By= 1.2 to 2.6V

V_{SB out}

V_{SB IN}

A_M

St-By OUT threshold voltage (Amp: ON)

2.6

St-By IN threshold voltage

Mute attenuation

(Amp: OFF)

P_Oref= 4W

1.2

V_{M out}

V_{M in}

Mute OUT threshold voltage (Amp: Play)

2.6

Mute IN threshold voltage

V_Sautomute threshold

(Amp: Mute)

1.2

(Amp: Mute); Att ≥ 80dB;

P_Oref= 4W

6.5

8.5

V_{AM in}

(Amp: Play); Att < 0.1dB;

P_O= 0.5W

7.6

_MUTE= 1.2V

I_pin22

Muting pin current

μA

(Source current)

Offset detector

V_off

Detected diff. output offset

V_OFFhigh leakage current

V_ST-BY=5V

OD off

1.4

2.6

V_{OFF LK}

µA

V_{OFF SAT}VOFF det saturation voltage OD on; I_OD= 1mA

300

Clipping detector

CD_LK

CD_SAT

CD_THD

Clip det high leakage current CD Off

μA

Clip det sat voltage

Clip det THD level

DC On; I_CD= 1mA

300

0.2

1. Saturated square wave output.

7/13

Electrical specifications

TDA7388A

2.4

Electrical characteristic curves

Figure 3.

Quiescent current vs. supply

voltage

Figure 4.

Output power vs. supply voltage

(4 Ohm)

I_d(mA)

200

P_o(W)

R_L= 4Ω

f= 1 KHz

190

180

170

160

150

140

V_in= 0

R_L= 4

THD = 10%

THD = 1%

(V)

AC00532

(V)

AC00531

Figure 5.

Distortion vs. output power

Figure 6.

Distortion vs. frequency

THD (%)

V_s= 14.4V

R_L= 4Ω

P_o= 4W

0.1

f = 10 KHz

f = 1 KHz

0.01

0.1

100

AC00533

100

1000

f (Hz)

10000

100000

(W)

AC00534

Figure 7.

Supply voltage rejection vs.

frequency

Figure 8.

Crosstalk vs. frequency

SVR (dB)

100

R_L= 4Ω

P_o= 4W

_g= 600Ω

R_g= 600Ω

_ripple= 1 Vrms

100

1000

f (Hz)

10000

100000

100

1000

f (Hz)

10000

100000

AC00535

AC00536

8/13

TDA7388A

Figure 9.

Electrical specifications

Output noise vs. source resistance Figure 10. Power dissipation & efficiency vs.

output power

En (µV)

180

P_diss(W)

η (%)

V_s= 14.4V

R_L= 4Ω

V_s= 13.2V

160

140

120

100

R_L= 4 x 4Ω

f = 1 KHz

22-22K Hz lin

P_diss

"A" wgtd

100

1000

10000

10 12 14 16 18 20 22 24

AC00537

R_g(Ω)

P_o(W)

Figure 11. ITU R-ARM frequency response,

weighting filter for transient pop

Output attenuation (dB)

-10

-20

-30

-40

-50

100

1000

10000

100000

AC00343

9/13

Application hints

TDA7388A

Application hints

Ref. to the circuit of Figure 2.

3.1

SVR

Besides its contribution to the ripple rejection, the SVR capacitor governs the turn ON/OFF

time sequence and, consequently, plays an essential role in the pop optimization during

ON/OFF transients.

To conveniently serve both needs, ITS MINIMUM RECOMMENDED VALUE IS 10µF.

3.2

3.3

Input stage

The TDA7388A’s inputs are ground-compatible and can stand very high input signals (

8Vpk) without any performances degradation.

If the standard value for the input capacitors (0.1µF) is adopted, the low frequency cut-off

will amount to 16 Hz.

Stand-by and Muting

Stand-by and Muting facilities are both 3.3V CMOS-COMPATIBLE. If unused, a straight

connection to Vs of their respective pins would be admissible.

Conventional/low-power transistors can be employed to drive muting and stand-by pins in

absence of true CMOS ports or microprocessors. R-C cells have always to be used in order

to smooth down the transitions for preventing any audible transient noises.

Since a DC current of about 10µA normally flows out of pin 23, the maximum allowable

muting-series resistance (R₂) is 70KΩ, which is sufficiently high to permit a muting capacitor

reasonably small (about 1µF).

If R₂is higher than recommended, the involved risk will be that the voltage at pin 23 may rise

to above the 1.5V threshold voltage and the device will consequently fail to turn OFF when

the mute line is brought down.

About the stand-by, the time constant to be assigned in order to obtain a virtually pop-free

transition has to be slower than 2.5V/ms.

10/13

TDA7388A

Package information

In order to meet environmental requirements, ST (also) offers these devices in ECOPACK

packages. ECOPACK packages are lead-free. The category of second Level Interconnect

is marked on the package and on the inner box label, in compliance with JEDEC Standard

JESD97. The maximum ratings related to soldering conditions are also marked on the inner

box label.

ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com.

Figure 12. Flexiwatt27 mechanical data and package dimensions

inch

TYP. MAX.

DIM.

MIN. TYP. MAX. MIN.

OUTLINE AND

MECHANICAL DATA

4.45

1.80

4.50

1.90

1.40

0.90

0.39

4.65 0.175 0.177 0.183

2.00 0.070 0.074 0.079

0.055

1.05 0.029 0.035 0.041

0.42 0.014 0.015 0.016

0.75

0.37

F (1)

0.57

0.022

0.80

1.00

1.20 0.031 0.040 0.047

25.75 26.00 26.25 1.014 1.023 1.033

H (2) 28.90 29.23 29.30 1.139 1.150 1.153

17.00

12.80

0.80

0.669

0.503

0.031

L (2) 22.07 22.47 22.87 0.869 0.884 0.904

L1 18.57 18.97 19.37 0.731 0.747 0.762

L2 (2) 15.50 15.70 15.90 0.610 0.618 0.626

7.70

7.85

3.5

4.00

2.20

7.95 0.303 0.309 0.313

0.197

0.138

3.70

3.60

4.30 0.145 0.157 0.169

4.40 0.142 0.157 0.173

0.086

0.079

1.70

0.5

0.3

1.25

0.50

0.067

0.02

0.12

0.049

0.019

5˚ (Typ.)

3˚ (Typ.)

20˚ (Typ.)

45˚ (Typ.)

Flexiwatt27 (vertical)

(1): dam-bar protusion not included

(2): molding protusion included

Pin 1

FLEX27ME

7139011

11/13

Revision history

TDA7388A

Revision history

Table 5.

Date

6-Dec-2007

Document revision history

Revision

Changes

Initial release.

12/13

TDA7388A

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right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any

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13/13

TDA7388A相关文章

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TDA7388A产品参数

型号:	TDA7388A
Brand Name：	STMicroelectronics
是否Rohs认证：	符合
生命周期：	Active
IHS 制造商：	STMICROELECTRONICS
零件包装代码：	ZFM
包装说明：	ROHS COMPLIANT, FLEXIWATT-27
针数：	27
Reach Compliance Code：	compliant
ECCN代码：	EAR99
HTS代码：	8542.33.00.01
Factory Lead Time：	11 weeks
风险等级：	2.29
Is Samacsys：	N
标称带宽：	20 kHz
商用集成电路类型：	AUDIO AMPLIFIER
谐波失真：	10%
JESD-30 代码：	R-XZFM-T27
JESD-609代码：	e3
湿度敏感等级：	3
信道数量：	4
功能数量：	1
端子数量：	27
标称输出功率：	27 W
封装主体材料：	UNSPECIFIED
封装代码：	ZIP
封装等效代码：	ZIP27,.16,.16,40
封装形状：	RECTANGULAR
封装形式：	FLANGE MOUNT
峰值回流温度（摄氏度）：	NOT SPECIFIED
电源：	14.4 V
认证状态：	Not Qualified
子类别：	Audio/Video Amplifiers
最大压摆率：	350 mA
表面贴装：	NO
技术：	BIPOLAR
端子面层：	Tin (Sn)
端子形式：	THROUGH-HOLE
端子节距：	1 mm
端子位置：	ZIG-ZAG
处于峰值回流温度下的最长时间：	NOT SPECIFIED
Base Number Matches：	1

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