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产品型号TDA7854的概述

芯片TDA7854的概述 TDA7854是意法半导体（STMicroelectronics）推出的一款高集成度音频功率放大器芯片，主要应用于汽车音响系统。它具备多种音频处理功能，能够支持立体声和环绕声输出，为用户提供高质量的音频体验。随着汽车智能化程度的提高，对音频系统的要求也日益增加，TDA7854凭借其强大的功能和灵活的配置成为汽车音响设计中不可或缺的模块。 TDA7854的详细参数 TDA7854的技术规格包括多个方面，涵盖其电性能、功率输出、失真率等。一般来说，TDA7854的主要参数包括： 1. 工作电压：典型工作电压范围为8V至18V，能够适应汽车电源的波动。 2. 输出功率：在4Ω负载时，TDA7854可提供最高达45W的输出功率（THD为1%），适合大多数汽车音响系统的需求。 3. 信噪比（SNR）：信噪比通常在95dB以上，能够保证音频信号的纯净度。 4. 总...

产品型号TDA7854的Datasheet PDF文件预览

TDA7854

4 x 47W MOSFET quad bridge power amplifier

Features

■ Multipower BCD technology

■ High output power capability:

– 4 x 47W/4Ω max.

– 4 x 80W/2Ω max.

■ MOSFET output power stage

■ Excellent 2Ω driving capability

■ Hi-fi class distortion

Flexiwatt 25

■ Low output noise

■ St-by function

■ Mute function

■ Automute at min. supply voltage detection

■ Fortuitous open GND

■ Low external component count:

– Internally fixed gain (26dB)

– No external compensation

– No bootstrap capacitors

■ Reversed battery

■ ESD

Description

Protections:

The TDA7854 is a breakthrough MOSFET

technology class AB audio power amplifier in

Flexiwatt 25 package designed for high power car

radio. The fully complementary P-Channel/N-

Channel output structure allows a rail to rail

output voltage swing which, combined with high

output current and minimized saturation losses

sets new power references in the car-radio field,

with unparalleled distortion performances.

■ Output short circuit to GND, to V , across the

load

■ Very inductive loads

■ Overrating chip temperature with soft thermal

limiter

■ Load dump voltage

Table 1. Device summary

Order code

Package

Flexiwatt 25

Packing

TDA7854

Tube

October 2007

Rev 1

1/12

www.st.com

Contents

TDA7854

Contents

Block diagram and application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.1

1.2

Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.1

2.2

Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

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

Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.1

3.2

Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4.1

4.2

4.3

4.4

SVR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Input stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Stand-by and muting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Heatsink definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2/12

TDA7854

List of tables

Table 2.

Table 3.

Table 4.

Table 5.

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

Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3/12

List of figures

TDA7854

List of figures

Figure 1.

Figure 2.

Figure 3.

Figure 4.

Figure 5.

Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Power dissipation vs. output power (R = 4Ω, audio program simulation) . . . . . . . . . . . . . . 9

Flexiwatt25 mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4/12

TDA7854

Block diagram and application circuit

1.1

Block diagram

Figure 1.

Block diagram

Vcc1

Vcc2

ST-BY

MUTE

OUT1+

OUT1-

IN1

IN2

IN3

IN4

PW-GND

OUT2+

OUT2-

PW-GND

OUT3+

OUT3-

PW-GND

OUT4+

OUT4-

PW-GND

AC-GND

SVR

TAB

S-GND

D06AU1646

1.2

Application circuit

Figure 2.

Application circuit

0.1μF

2200μF

Vcc1-2

Vcc3-4

10K

ST-BY

MUTE

1μF

OUT1

OUT2

OUT3

OUT4

47K

C10

1μF

IN1

IN2

IN3

IN4

0.1μF

C2 0.1μF

C3 0.1μF

C4 0.1μF

S-GND

SVR

TAB

0.47μF

47μF

D06AU1647A

47K

CD OUT

5/12

Pin description

TDA7854

Pin description

2.1

Pin connection

Figure 3.

Pin connection (top view)

D94AU159mod

2.2

Thermal data

Table 2.

Symbol

Thermal data

Parameter

Value

Unit

R_{th j-case}Thermal resistance junction to case

max

°C/W

6/12

TDA7854

Electrical specifications

3.1

Absolute maximum ratings

Table 3.

Symbol

Absolute maximum ratings

Parameter

Value

Unit

V_S

Operating supply voltage

V_{S (DC)}DC supply voltage

V_{S (pk)}Peak supply voltage (for t = 50ms)

Output peak current

I_O

Non repetitive (t = 100μs)

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

P_tot

T_j

Power dissipation T_case= 70°C

Junction temperature

150

°C

T_stg

Storage temperature

-55 to 150

3.2

Electrical characteristics

Table 4.

Electrical characteristics

(Refer to the test and application diagram, V^S= 14.4V; RL = 4Ω; R_g= 600Ω; f = 1KHz;

T^amb= 25°C; unless otherwise specified).

Symbol

Parameter

Quiescent current

Test condition

Min.

Typ.

Max.

Unit

I_q1

V_OS

G_v

R_L= ∞

100

-60

150

250

+60

Output offset voltage

Voltage gain

Play mode / Mute mode

dG_v

Channel gain unbalance

V_S= 14.4V; THD = 10%

V_S= 14.4V; THD = 1%

P_o

Output power

V_S= 14.4V; THD = 10%, 2Ω

V_S= 14.4V; THD = 1%, 2Ω

V_S= 15.2V; R_L= 4Ω

V_S= 15.2V; R_L= 2Ω

P_{o max.}Max. output power⁽¹⁾

THD

e_No

Distortion

P_o= 4W

0.01

"A" Weighted

μV

Output Noise

Bw = 20Hz to 20KHz

100

120

SVR

f_ch

Supply voltage rejection

High cut-off frequency

Input Impedance

f = 100Hz; V_r= 1Vrms

P_O= 0.5W

100

KHz

KΩ

300

100

R_i

7/12

Electrical specifications

TDA7854

Table 4.

Electrical characteristics (continued)

(Refer to the test and application diagram, V^S= 14.4V; RL = 4Ω; R_g= 600Ω; f = 1KHz;

T^amb= 25°C; unless otherwise specified).

Parameter Test condition

Symbol

Min.

Typ.

Max.

Unit

f = 1KHz P_O= 4W

f = 10KHz P_O= 4W

C_T

Cross Talk

I_SB

St-by current consumption

St-by pin current

V_St-By= 0

μA

I_pin5

V_St-By= 1.2V to 2.65V

(Amp: ON)

V_{SB out}St-by out threshold voltage

2.65

V_{SB in}

A_M

St-by in threshold voltage

Mute attenuation

(Amp: OFF)

P_Oref= 4W

1.2

V_{M out}

V_{M in}

Mute out threshold voltage

Mute in threshold voltage

(Amp: Play)

(Amp: Mute)

2.6

(Amp: Mute)

Att ≥ 80dB; P_Oref= 4W

6.8

V_{AM in}

VS automute threshold

Muting pin current

(Amp: Play)

Att < 0.1dB; P_O= 0.5W

7.5

_MUTE= 1.2V

(Sourced current)

_MUTE= 2.6V

μA

Ipin23

-5

CLIPPING DETECTOR

CD_LK

Clip Det high leakage current

Cd Off

0.2

μA

CD_SATClip Det sat voltage

CD_THDClip Det THD level

1. Saturated square wave output

DC On; I_CD= 1mA

0.4

8/12

TDA7854

Application hints

4.1

4.2

4.3

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.

Input stage

The TDA7854'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

R-C cells have always to be used in order to smooth down the transitions for preventing any

audible transient noise.

About 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.

A direct connection to Vs of these two pins is admissible but a 470kOhm equivalent

resistance should be present between the power supply and muting and stand-by pins.

4.4

Heatsink definition

Under normal usage (4 Ohm speakers) the heatsink's thermal requirements have to be

deduced from Figure 4, which reports the simulated power dissipation when real

music/speech programmes are played out. Noise with gaussian-distributed amplitude was

employed for this simulation. Based on that, frequent clipping occurrence (worst-case) will

cause P

= 26W. Assuming T_amb= 70°C and T_CHIP= 150°C as boundary conditions, the

diss

heatsink's thermal resistance should be approximately 2°C/W. This would avoid any thermal

shutdown occurrence even after long-term and full-volume operation.

Figure 4.

Power dissipation vs. output power (R = 4Ω, audio program simulation)

P_tot(W)

V_s= 14.4 V

_L= 4 x 4 Ω

GAUSSIAN NOISE

CLIP START

P_o(W)

AC00036

9/12

Package information

TDA7854

Package information

In order to meet environmental requirements, ST offers this device in ECOPACK packages.

This package has a Lead-free second level interconnect. 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 5.

Flexiwatt25 mechanical data and package dimensions

inch

TYP. MAX.

4.65 0.175 0.177 0.183

2.00 0.070 0.074 0.079

0.055

DIM.

MIN. TYP. MAX. MIN.

OUTLINE AND

MECHANICAL DATA

4.45

1.80

4.50

1.90

1.40

0.90

0.39

0.75

0.37

1.05 0.029 0.035 0.041

0.42 0.014 0.015 0.016

F (1)

0.57

0.022

0.80

1.00

1.20 0.031 0.040 0.047

23.75 24.00 24.25 0.935 0.945 0.955

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

1.70

0.5

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

0.067

0.02

0.12

0.049

0.019

0.3

1.25

0.50

5˚ (T p.)

3˚ (Typ.)

20˚ (Typ.)

45˚ (Typ.)

Flexiwatt25 (vertical)

(1): dam-bar protusion not included

(2): molding protusion included

Pin 1

7034862

FLEX25ME

10/12

TDA7854

Revision history

Table 5.

Date

4-Oct-2007

Document revision history

Revision

Changes

Initial release.

11/12

TDA7854

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.

Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no

liability whatsoever relating to the choice, selection or use of the ST products and services described herein.

No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this

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or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such

third party products or services or any intellectual property contained therein.

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Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void

any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any

liability of ST.

ST and the ST logo are trademarks or registered trademarks of ST in various countries.

Information in this document supersedes and replaces all information previously supplied.

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www.st.com

12/12

TDA7854相关文章

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TDA7854产品参数

型号:	TDA7854
是否无铅：	不含铅
是否Rohs认证：	符合
生命周期：	Obsolete
零件包装代码：	ZFM
包装说明：	ZIP, ZIP25,.16,.16,40
针数：	25
Reach Compliance Code：	not_compliant
ECCN代码：	EAR99
HTS代码：	8542.33.00.01
风险等级：	5.72
Samacsys Confidence：	4
Samacsys Status：	Released
Samacsys PartID：	2013203
Samacsys Pin Count：	25
Samacsys Part Category：	Integrated Circuit
Samacsys Package Category：	Other
Samacsys Footprint Name：	TDA7854-2
Samacsys Released Date：	2019-12-19 12:09:16
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-T25
JESD-609代码：	e3
信道数量：	4
功能数量：	1
端子数量：	25
标称输出功率：	48 W
封装主体材料：	UNSPECIFIED
封装代码：	ZIP
封装等效代码：	ZIP25,.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：	250 mA
表面贴装：	NO
技术：	BCDMOS
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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