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参数资料
| 型号： | TA8215L |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 18 W, 2 CHANNEL, AUDIO AMPLIFIER, PSFM17 |
| 封装： | HSIP-17 |
| 文件页数： | 6/12页 |
| 文件大小： | 1005K |
| 代理商： | TA8215L |
TA8215H / L
2002-10-30
3
The total closed loop gain GV of this IC can be obtained by expression below when the closed loop voltage gain of
Amp1 is GV1.
GV1 = 20og
R2
f
R
R2)
f
(R
R1
+
(dB) ..... (1)
The closed loop voltage gain of power Amp, Amp3
and Amp4 is fixed at GV3 ≒ GV4 = 20dB.
Therefore, the total closed loop voltage gain GV is
obtained through BTL connection by the expression
below.
GV = GV1 + GV3 + 6 (dB) ..... (2)
For example, when Rf = 0, GV is obtained by the
expressions (1) and (2) as shown below.
GV ≒ 24 + 20 + 6 = 50dB
The voltage gain is reduced when Rf is increased.
(Fig.2)
With the voltage gain reduced, since (1) the oscillation
stability is reduced, and (2) the pop noise changes when
VCC is set to on, refer to the items 3 and 4.
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 1A (typ.) at the
stand-by state.
(4) pin control voltage : V (SB)
Stand
-by
Power
V (SB) (V)
On
Off
0~2
Off
On
3~VCC
~Advantage of stand-by SW~
(1) Since VCC 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.
(4)
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| TA8215H | 18 W, 2 CHANNEL, AUDIO AMPLIFIER, PZFM17 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TA8215LQ | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:18W BTL 】 2CH Audio Power Amplifier |
| TA8216H | 制造商:Panasonic Industrial Company 功能描述:IC |
| TA8216H_02 | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:Dual Audio Power Amplifier |
| TA8216HQ | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:Dual Audio Power Amplifier |
| TA8216HQ(5) | 功能描述:音频放大器 13W x 2ch Gen Audio Pwr Amp RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
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