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參數(shù)資料
| 型號： | TA8215H |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 18 W, 2 CHANNEL, AUDIO AMPLIFIER, PZFM17 |
| 封裝： | HZIP-17 |
| 文件頁數(shù)： | 6/12頁 |
| 文件大?。?/td> | 1005K |
| 代理商： | TA8215H |
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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| TA8216HQ | 13 W, 2 CHANNEL, AUDIO AMPLIFIER, PZFM12 |
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| TA8220HQ | 30 W, 2 CHANNEL, AUDIO AMPLIFIER, PZFM17 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TA8215HQ | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:18W BTL 】 2CH Audio Power Amplifier |
| TA8215HQ-A | 制造商:Toshiba 功能描述:Class-AB 制造商:Toshiba 功能描述:Class-AB Cut Tape |
| TA8215L | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:18W BTL x 3CH AUDIO POWER AMPLIFIER |
| TA8215LQ | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:18W BTL 】 2CH Audio Power Amplifier |
| TA8216H | 制造商:Panasonic Industrial Company 功能描述:IC |
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