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參數(shù)資料
| 型號(hào)： | TA8275HQ |
| 元件分類(lèi)： | 音頻／視頻放大 |
| 英文描述： | 24 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| 封裝： | 1 MM PITCH, PLASTIC, HZIP-25 |
| 文件頁(yè)數(shù)： | 10/16頁(yè) |
| 文件大?。?/td> | 321K |
| 代理商： | TA8275HQ |
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TA8275HQ
2006-04-28
3
Figure 2 With pin 4 set to High,
Power is turned ON
ON
4
OFF
10 k
to BIAS
CUTTING CIRCUIT
≈ 2VBE
VCC
Power
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 = 0 dB
The voltage gain of Amp.2A, B:
GV2 = 20 dB
The voltage gain of BLT Connection: GV (BTL) = 6 dB
Therefore, the total voltage gain is decided by expression below.
GV = GV1 + GV2 + GV (BTL) = 0 + 20 + 6 = 26 dB
2.
Stand-by SW Function (pin 4)
By means of controlling pin 4 (stand-by terminal)
to high and low, the power supply can be set to ON
and OFF. The threshold voltage of pin 4 is set at
about 3VBE (typ.), and the power supply current is
about 2
A (typ.) at the stand-by state.
Control Voltage of pin 4: VSB
Stand-by
Power
VSB (V)
ON
OFF
0~1.5
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
Amp. 1
Input
Amp. 2A
Amp. 2B
Figure 1
Block Diagram
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PDF描述 |
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| TA8275HQ | 24 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| TA8275H | 24 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| TA8276HQ | 23 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| TA8276HQ | 23 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| TA8276H | 23 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| TA8276H | 制造商:TOSHIBA 制造商全稱(chēng):Toshiba Semiconductor 功能描述:Max Power 35 W BTL 】 4 ch Audio Power IC |
| TA8276HQ | 功能描述:音頻放大器 20W x 4ch Car Pwr Amp RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類(lèi)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 |
| TA8277 | 制造商:TOSHIBA 制造商全稱(chēng):Toshiba Semiconductor 功能描述:MAX POWER 43 W BTL x 4 CH AUDIO POWER IC |
| TA8277H | 制造商:TOSHIBA 制造商全稱(chēng):Toshiba Semiconductor 功能描述:MAX POWER 43 W BTL x 4 CH AUDIO POWER IC |
| TA8300F | 制造商:TOSHIBA 制造商全稱(chēng):Toshiba Semiconductor 功能描述:MOTOR DRIVER FOR CAMERA |
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