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參數(shù)資料
| 型號： | PT2308P-S |
| 廠商： | Princeton Technology Corporation |
| 英文描述： | 2-Channel 300mW Class AB Power Amplifier |
| 中文描述： | 2通道300mW的AB類功率放大器 |
| 文件頁數(shù)： | 6/12頁 |
| 文件大?。?/td> | 277K |
| 代理商： | PT2308P-S |
Tel: 886-2-66296288
4. Output Coupling Capacitor Co
Single power single-ended (SE) configuration generates a DC bias at the output of the amplifier; a
coupling capacitor must be placed at the output to block the DC bias from being sent to the load and
connect a RL at the signal output terminal. The low cut-off frequency may be needs to adjust to
correspond to different load (speaker or earphone) specifications. Similar to the input coupling
capacitor, the output coupling capacitor and impedance of the load form a 1
st
order high-pass filter,
the low cut-off frequency is determined by the equation:
f
c(highpass)
=1/2
π
R
L
Co
The diagram below shows the frequency response when: Co=1000μF/470μF/220μF/100μF.
URL: http://www.princeton.com.tw
Fax: 886-2-29174598
PT2308P V1.0
- 6 -
November, 2005
2-Channel 300mW Class AB Power Amplifier
PT2308P
5. Discharging Resistor (R3)
When the PT2308 is powered ON, the output coupling capacitor Co will start charging. When there is
no load connected at Vout, there will be a DC voltage present. At this time, if a load is suddenly
connected (usually earphone or speaker for general applications), the charged Co will then
discharge through Vout to the load, causing a very loud popping sound, thus, it is recommended to
connect a R3 to regulate the discharge of Co.
The time it takes to discharge is T=CoR3.
The recommended resistance value for R3 is between 1K
~
10K
,
to prevent loading effect from the
amplifier. If the load (ex. Speaker) is permanently connected then R3 can be neglected.
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| PT2308L | 100V Single N-Channel HEXFET Power MOSFET in a TO-262 package; Similar to IRFSL4610 with Lead Free Packaging |
| PT2309 | Headphone Driver IC |
| PT2309-D | Headphone Driver IC |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| PT2308-S | 制造商:PTC 制造商全稱:Princeton Technology Corp 功能描述:Headphone Driver IC |
| PT2309 | 制造商:PTC 制造商全稱:Princeton Technology Corp 功能描述:Headphone Driver IC |
| PT-2309 | 功能描述:BUZZER 2.048KHZ 1-30V 85DB PCB RoHS:是 類別:音頻產品 >> 蜂鳴器 系列:PT 3D 型號:ZA Series.igs ZA Series.stp ZA Series.sat 標準包裝:1 系列:ZA 驅動器電路:指示燈，內部驅動 技術:壓電 輸入類型:AC，DC 電壓 - 額定:- 電壓范圍:16 ~ 28V 頻率:3.3kHz 工作模式:脈沖，慢速 聲壓級:65dB @ 16V，61cm 電流 - 電源:40mA 可清洗:無 安裝類型:面板安裝 端子:端接塊 尺寸/尺寸:圓形 - 30.7mm 直徑 x 43.4mm H 包裝:散裝 電容 @ 頻率:- 工作溫度:-30°C ~ 50°C |
| PT2309_09 | 制造商:PTC 制造商全稱:Princeton Technology Corp 功能描述:Headphone Driver IC |
| PT2309-D | 制造商:PTC 制造商全稱:Princeton Technology Corp 功能描述:Headphone Driver IC |
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