TA8205AHQ

更新时间： 2024-01-29 21:43:38

品牌	Logo	应用领域
东芝 - TOSHIBA		消费电路商用集成电路音频放大器视频放大器功率放大器局域网
页数	文件大小	规格书
14页	935K
描述
18W BTL 】 2CH Audio Power Amplifier

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技术参数
数据手册

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TA8205AHQ 技术参数

是否Rohs认证：	不符合	生命周期：	Transferred
零件包装代码：	SFM	包装说明：	2 MM PITCH, PLASTIC, HSIP-17
针数：	17	Reach Compliance Code：	unknown
风险等级：	5.54	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-PSFM-T17
信道数量：	2	功能数量：	1
端子数量：	17	最高工作温度：	85 °C
最低工作温度：	-30 °C	标称输出功率：	18 W
封装主体材料：	PLASTIC/EPOXY	封装形状：	RECTANGULAR
封装形式：	FLANGE MOUNT	认证状态：	Not Qualified
最大供电电压 (Vsup)：	18 V	最小供电电压 (Vsup)：	9 V
表面贴装：	NO	技术：	BIPOLAR
温度等级：	OTHER	端子形式：	THROUGH-HOLE
端子位置：	SINGLE	Base Number Matches：	1

TA8205AHQ 数据手册

TA8205AHQ/ALQ

The total closed loop gain G of this IC can be obtained by expression below when the closed loop voltage gain of

Amp 1 is G

R1+ (R + R2)

= 20log

(dB) ..... (1)

+ R2

The closed loop voltage gain of power Amp, Amp 3

and Amp 4 is fixed at G ≒ G = 20dB.

Therefore, the total closed circuit voltage gain G is

obtained through BTL connection by the expression

below.

= G + G + 6 (dB) ............... (2)

V1 V3

For example, when Rf = 0Ω, GV is obtained by the

expressions (1) and (2) as shown below.

≒ 24 + 20 + 6 = 50dB

The voltage gain is reduced when R is increased. (Fig.2)

With the voltage gain reduced, since (1) the oscillation

stability is reduced, and (2) the pop noise changes when

is set to on, refer to the items 3 and 4.

Fig.2

2. Stand−by SW function

By means of controlling pin(4) (stand−by terminal) to high

and low, the power suply can be set to on and off.

The threshold voltage of pin(4) is set at about 3V (typ.),

and the power supply current is about 1µA (typ.) at the

stand−by state.

Pin(4) control voltage : V

(SB)

Stand−by

Power

(V)

(SB)

Off

0~2

3~V

Fig.3 With pin(4) set to high, power is turened on.

Advantage of stand−by SW

(1) Since V can directly be controlled to on / off by the microcomuter, the switching relay can be omitted.

(2) Since the control current is microscopic, the switching relay of small current capacity is satisfactory for

switching.

2006-04-28

1 234 5 6 7...14

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