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参数资料
| 型号： | LM4831VFX |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP44 |
| 封装： | TQFP-44 |
| 文件页数： | 11/13页 |
| 文件大小： | 575K |
| 代理商： | LM4831VFX |
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
0.01F–0.1 F.
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 0.1F 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
LM4831
www.national.com
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相关代理商/技术参数 |
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|---|---|
| LM4832 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Digitally Controlled Tone and Volume Circuit with Stereo Audio Power Amplifier, Microphone Preamp Stage and National 3D Sound |
| LM4832M | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Digitally Controlled Tone and Volume Circuit with Stereo Audio Power Amplifier, Microphone Preamp Stage and National 3D Sound |
| LM4832M/NOPB | 功能描述:IC AMP AUDIO PWR .25W AB 28SOIC RoHS:是 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:Boomer® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:DirectDrive® 类型:H 类 输出类型:耳机，2-通道（立体声） 在某负载时最大输出功率 x 通道数量:35mW x 2 @ 16 欧姆 电源电压:1.62 V ~ 1.98 V 特点:I²C，麦克风，静音，短路保护，音量控制 安装类型:表面贴装 供应商设备封装:25-WLP（2.09x2.09） 封装/外壳:25-WFBGA，WLCSP 包装:带卷 (TR) |
| LM4832MT/NOPB | 功能描述:IC AMP AUDIO PWR .25W AB 28TSSOP RoHS:是 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:Boomer® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:DirectDrive® 类型:H 类 输出类型:耳机，2-通道（立体声） 在某负载时最大输出功率 x 通道数量:35mW x 2 @ 16 欧姆 电源电压:1.62 V ~ 1.98 V 特点:I²C，麦克风，静音，短路保护，音量控制 安装类型:表面贴装 供应商设备封装:25-WLP（2.09x2.09） 封装/外壳:25-WFBGA，WLCSP 包装:带卷 (TR) |
| LM4832MTX/NOPB | 功能描述:IC AMP AUDIO PWR .25W AB 28TSSOP RoHS:是 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:Boomer® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:DirectDrive® 类型:H 类 输出类型:耳机，2-通道（立体声） 在某负载时最大输出功率 x 通道数量:35mW x 2 @ 16 欧姆 电源电压:1.62 V ~ 1.98 V 特点:I²C，麦克风，静音，短路保护，音量控制 安装类型:表面贴装 供应商设备封装:25-WLP（2.09x2.09） 封装/外壳:25-WFBGA，WLCSP 包装:带卷 (TR) |
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