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參數(shù)資料
| 型號： | TA2002FN |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 0.05 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24 |
| 封裝： | SSOP-24 |
| 文件頁數(shù)： | 16/18頁 |
| 文件大?。?/td> | 458K |
| 代理商： | TA2002FN |
TA2002F / FN
2002-10-30
7
(7) Increase of ripple filter current
It is built in PNP transistor for a ripple filter, the current
capacity is about 10mA.
Then this IC can be increased the current capacity of the
ripple filter with an external transistor QX (exp. 2SA1362). In
this case, as the current gain is up, it is necessary to connect
external parts for phase-compensation (see Fig.4). And it is
necessary to stabilize the ripple filter circuit carefully, because
the ripple filter circuit supplies internal circuit except power
amplifier circuit with power source.
Fig.4 Increase of ripple filter current
(8) Pattern layout
(a) The GND line of pin(1) (PRE GND) should be isolated from that of pin(12) (PW GND) at the GND point,
where the VCC decoupling condenser is placed.
(b) The GND line of capacitor (for ripple filter) should be isolated from that of compensation capacitor, at the
point of pin(12) (PW GND).
(c) The pattern diagram between the pin(24) (VREF) and capacitor should be made shortly.
As for pin(1) (PRE GND), it's as well.
(d) The pattern diagram between the pin(12) (PW GND) and compensation capacitor, should be shortly. And this
positive line of compensation capacitor should be kept away from the terminals of PW IN, pin(6), (19).
(e) The lines of PW IN should be kept away from those of PW OUT. And each of the PW OUT lines should be
kept away.
※
See the example of pattern layout as shown next page.
(9) Oscillation precaution
Small temperature coefficient and excellent frequency characteristic is needed by capacitors below.
Oscillation preventing capacitors for power amplifier output.
Bypass capacitor for ripple filter
Capacitor between VCC and GND
Capacitor between VREF and GND
43
10k
16
15
RF out
VCC
※
+
VCC
QX
RF OUT
Base
Monolithic
ceramic condenser
0.22F
※
+
17
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PDF描述 |
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| TA2002F | 0.05 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24 |
| TA2003FG | AM/FM, AUDIO SINGLE CHIP RECEIVER, PDSO16 |
| TA2003PG | AM/FM, AUDIO SINGLE CHIP RECEIVER, PDIP16 |
| TA2003P | AUDIO SINGLE CHIP RECEIVER, PDIP16 |
| TA2003F | AUDIO SINGLE CHIP RECEIVER, PDSO16 |
相關(guān)代理商/技術(shù)參數(shù) |
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| TA2003 | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:AM/FM RADIO IC |
| TA2003FG | 制造商:Toshiba America Electronic Components 功能描述: |
| TA2003P | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:AM/FM RADIO IC |
| TA2003P(M) | 制造商:Toshiba America Electronic Components 功能描述: |
| TA2003PG | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:AM / FM Radio IC |
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