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參數(shù)資料
| 型號： | TA2145AFG |
| 廠商： | Toshiba Corporation |
| 英文描述： | 3 V Stereo Headphone Amplifier (3 V USE) |
| 中文描述： | 3伏立體聲耳機(jī)放大器（3伏使用） |
| 文件頁數(shù)： | 6/16頁 |
| 文件大小： | 313K |
| 代理商： | TA2145AFG |
TA2145AFG
2006-04-19
6
Application Note
V
CC
and GND
This IC has two V
CC
terminals and three GND terminals. Pattern layout should be designed carefully to
reduce the common impedance.
V
CC
V
CC
(pin 17) ---------------- Preamplifier stage and power amplifier stage.
GVN V
CC
(pin 16)--------- Motor governor stage.
GND
PRE GND (pin 1)-----------Preamplifier stage, and power amplifier stage except for the power drive stage.
PW GND (pin 11)-----------Power drive stage of power amplifier.
GVN GND (pin 12)---------Motor governor stage.
V
REF
It is necessary to stabilize the V
REF
circuit, because the internal circuit operate on this reference.
RF IN
As this terminal is an input terminal of the ripple filter, it cannot supply a power supply to other ICs etc.
Preamplifier
Input signal should be applied to V
REF
standard, otherwise pop noise become bigger when V
CC
is turned on
and off.
Power amplifier
It is necessary to insert the coupling capacitor through the PW IN terminal. In case that DC current or DC
voltage is applied to the PW IN terminal, the internal circuit has unbalance and the power amplifier doesn
’
t
operate normally.
Operating supply voltage range of motor governor stage
As for the minimum of operating supply voltage range, the motor voltage is 1.8 V.
In case that it is more than 1.8 V, the low voltage performance becomes bad.
PRE SW sensitivity (Ta
=
25°C)
PRE SW
Supply voltage V
CC
(V)
T
1
1.5 V
1.8 V
0.5 V
0
1.5
2.0
2.5
3.5
4.0
3.0
2
4
1
3
1.2 V
3.0 V
3.6 V
“H”
PRE AMP: OFF
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| TA2145F | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:3V STEREO GEADPHONE AMPLIFIER (3V USE) |
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| TA2149BN | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:3 V AM/FM 1 Chip Tuner IC (for Digital Tuning System) |
| TA2149N | 制造商:Panasonic Industrial Company 功能描述:TUNER |
| TA2151FN | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:RF Amplifier for Digital Servo CD System |
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