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參數(shù)資料
| 型號： | LM4831 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Multimedia Computer Audio Chip |
| 中文描述： | 多媒體計算機音頻芯片 |
| 文件頁數(shù)： | 7/12頁 |
| 文件大小： | 575K |
| 代理商： | LM4831 |
Pin Descriptions
(Continued)
MIC+IN
This pin is the positive input of the
microphone amplifier. The microphone
amplifier is typically configured as an
inverting amplifier, so this pin should
be connected to the BYPASS pin to
properly bias the amplifier. Further,
this pin should be individually
bypassed with a capacitor of
0.01μF–0.1 μF.
MICIN
This pin is the inverting input for the
microphone amplifier. Because the
microphone amplifier is typically used
as an inverting amplifier, this pin
should be capacitor coupled to the
input signal.
MIC OUT
This pin is the microphone amplifier
output. If this pin is to be connected to
any chips other than the LM4831, it
should be capacitor coupled to the
load.
BEEP A,
BEEP B,
BEEP C,
BEEP D
These four pins are used to “wake up”
the LM4831 for a specified amount of
time (dictated by the parallel resistor
and capacitor connected to the RC
pin). If the device is in shutdown and
an edge appears at any of the four
BEEP pins, then the device will
power-up, pass the sound, and then
power-down again.
BEEP OUT
This pin outputs the result of an
exclusive-or of the four BEEP inputs.
BEEP OUT connects back to the
Audio Codec as a status pin.
RC
This pin is connected to an external
resistor-capacitor network which sets
the on-time for a beep request.
Typically, a 0.1μF capacitor is
paralleled with a 1–10M
resistor.
Typical Performance Characteristic
Supply Current vs
Supply Voltage
DS100057-31
Power Derating Curve
DS100057-23
THD+N vs Frequency
DS100057-5
THD+N vs Frequency
DS100057-4
THD+N vs Frequency
DS100057-29
www.national.com
7
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| LM4832M | Digitally Controlled Tone and Volume Circuit with Stereo Audio Power Amplifier, Microphone Preamp Stage and National 3D Sound |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LM4831 WAF | 制造商:Texas Instruments 功能描述: |
| LM48310 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Ultra-Low EMI, Filterless, 2.6W, Mono, Class D Audio Power Amplifier with E2S |
| LM48310SD | 制造商:Texas Instruments 功能描述:Audio Amp Speaker 1-CH Mono 2.6W Class-D 10-Pin LLP EP T/R |
| LM48310SD/NOPB | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型: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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LM48310SDBD | 功能描述:音頻 IC 開發(fā)工具 LM48310SD EVAL BOARD RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V |
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