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参数资料
| 型号： | TA8201AK |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 17 W, 1 CHANNEL, AUDIO AMPLIFIER, PSFM7 |
| 封装： | HSIP-7 |
| 文件页数： | 3/9页 |
| 文件大小： | 719K |
| 代理商： | TA8201AK |
TA8201AK
2002-10-30
3
For example, when Rf = 0, GV is obtained by
the expression below.
GV≒28+20+6 = 54 (dB)
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 2 and 4.
2. Capacitive value of input and NF capacitor
This IC has the built-in circuit which makes the input voltage of amp. 1 and the voltage of NF terminal equal at
VCC → on by means of providing the pre-amp (amp 1) at the first stage.
Therefore, the off-set voltage produced at the first stage is suppressed, and the pop noise is prevented.
Set the capacitive value of input and NF capacitor according to the gain to be used.
[Reference] (A) At GV = 54dB (Rf = 0) CIN = 4.7F, CNF = 47F
(B) At GV = 40dB (Rf = 560) CIN = 3.3F, CNF = 33F
3. Capacitance of ripple filter capacitor
The capacitance of the ripple filter capacitor of (3) pin determines the time constant at VCC → on and VCC → off.
Since the pop noise varies according to the capacitance of the ripple filter capacitor, C3 =220F recommended.
Having the built-in rapid discharging circuit of ripple and NF voltage at the time when VCC → off, this IC is
effective for preventing the pop noise of VCC continuous on / off.
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| TA8204 | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:LOW FREQUENCY POWER AMPLIFIER |
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