TDA7266B

更新时间： 2024-02-02 12:07:42

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		放大器
页数	文件大小	规格书
9页	228K
描述
10+10W DUAL BRIDGE AMPLIFIER

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技术参数
数据手册

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TDA7266B 技术参数

生命周期：	Obsolete	包装说明：	CLIPWATT-15
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.33.00.01	风险等级：	5.61
Is Samacsys：	N	标称带宽：	20 kHz
商用集成电路类型：	AUDIO AMPLIFIER	增益：	26 dB
谐波失真：	10%	JESD-30 代码：	R-XZFM-T15
信道数量：	2	功能数量：	1
端子数量：	15	最高工作温度：	70 °C
最低工作温度：		标称输出功率：	5 W
封装主体材料：	UNSPECIFIED	封装形状：	RECTANGULAR
封装形式：	FLANGE MOUNT	最大供电电压 (Vsup)：	13 V
最小供电电压 (Vsup)：	3 V	表面贴装：	NO
温度等级：	COMMERCIAL	端子形式：	THROUGH-HOLE
端子位置：	ZIG-ZAG	Base Number Matches：	1

TDA7266B 数据手册

TDA7266B

ELECTRICAL CHARACTERISTICS

(Continued)

Symbol

VT_MUTE

VT_ST-BY

I_ST-BY

Parameter

Mute Threshold

Test Condition

V_O= -30dB

Min.

2.3

Typ.

2.9

Max.

Unit

4.1

1.8

100

St-by Threshold

0.8

1.3

ST-BY current V6 = GND

Total Output Noise Voltage

µA

e_N

A curve

f = 20Hz to 20kHz

150

220

µV

500

the amplifier, this to avoid "POP" and "CLICK" on

the outputs.

When this voltage reaches the St-by threshold

level, the amplifier is switched-on and the external

capacitors in series to the input terminals (C3,

C5) start to charge.

APPLICATION SUGGESTION

STAND-BY AND MUTE FUNCTIONS

(A) Microprocessor Application

In order to avoid annoying "Pop-Noise" during

Turn-On/Off transients, it is necessary to guaran-

tee the right St-by and mute signals sequence.

It is quite simple to obtain this function using a mi-

croprocessor (Fig. 1 and 2).

At first St-by signal (from mP) goes high and the

voltage across the St-by terminal (Pin 7) starts to

increase exponentially. The external RC network

is intended to turn-on slowly the biasing circuits of

It’s necessary to mantain the mute signal low until

the capacitors are fully charged, this to avoid that

the device goes in play mode causing a loud "Pop

Noise" on the speakers.

A delay of 100-200ms between St-by and mute

signals is suitable for a proper operation.

Figure 1:

Microprocessor Application

470µF

100nF

C1 0.22µF

IN1

OUT1+

R1 10K

ST-BY

10µF

S-GND

µP

OUT1-

OUT2+

Vref

C3 0.22µF

IN2

R2 10K

MUTE

1µF

OUT2-

PW-GND

D95AU258A

3/9

1 234 5 6 7...9

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