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參數(shù)資料
| 型號： | TA8251AH |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 21 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| 封裝： | HZIP-25 |
| 文件頁數(shù)： | 7/13頁 |
| 文件大?。?/td> | 1157K |
| 代理商： | TA8251AH |
TA8251AH
2002-10-30
3
Caution And Application Method
(description is made only on the single channel.)
1. Voltage gain adjustment
This IC has no NF (negative feedback) terminals. Therefore, the voltage gain can’t adjusted, but it makes the
device a space and total costs saver.
The voltage gain of amp. 1: GV1 = 0dB
The voltage gain of amp. 2A, B: GV2 = 28dB
The voltage gain of BTL connection: GV (BTL) = 6dB
Therefore, the total voltage gain is decided by expression below.
GV = GV1 + GV2 + GV (BTL) = 0 + 28 + 6 = 34dB
2. Stand-by SW function
By means of controlling pin(2) (stand-by terminal) to high
and low, the power supply can be set to on and off. The
threshold voltage of pin(2) is set at about 3V (typ.), and
the power supply current is about 100A (typ.) at the
stand-by state.
Control voltage of pin(2): V (SB)
Stand
-By
Power
V (SB) (V)
On
Off
0~2
Off
On
3~VCC
Adjustage of stand-by SW
(1) Since VCC can directly be controlled to on or off by the
microcomputer, the switching relay can be omitted.
(2) Since the control current is microscopic the switching relay of small current capacity is satisfactory for
switching
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TA8251AHQ | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:MAX POWER 30W BTL X 4CH AUDIO POWER IC |
| TA8252H | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:Max Power 37W BTL 】 4ch Audio Power IC |
| TA8254BHQ | 功能描述:音頻放大器 21W x 2ch Car Pwr Amp RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TA8254H | 制造商:JVC Worldwide 功能描述:I.C(MONO-ANA) SUB:TA8254BH |
| TA8255AH | 制造商:Panasonic Industrial Company 功能描述:IC |
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