參數(shù)資料
型號： LM4831VF
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 消費(fèi)家電
英文描述： Multimedia Computer Audio Chip
中文描述： SPECIALTY CONSUMER CIRCUIT, PQFP44
封裝： TQFP-44
文件頁數(shù)： 7/12頁
文件大?。?/td> 575K
代理商： LM4831VF
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
相關(guān)PDF資料
PDF描述
LM4831 Multimedia Computer Audio Chip
LM4832MX Digitally Controlled Tone and Volume Circuit with Stereo Audio Power Amplifier, Microphone Preamp Stage and National 3D Sound
LM4832 Digitally Controlled Tone and Volume Circuit with Stereo Audio Power Amplifier, Microphone Preamp Stage and National 3D Sound
LM4832M Digitally Controlled Tone and Volume Circuit with Stereo Audio Power Amplifier, Microphone Preamp Stage and National 3D Sound
LM4832N Digitally Controlled Tone and Volume Circuit with Stereo Audio Power Amplifier, Microphone Preamp Stage and National 3D Sound
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM4831VFX 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述:
LM4832 制造商:NSC 制造商全稱: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 制造商全稱: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 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:Boomer® 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:DirectDrive® 類型:H 類 輸出類型:耳機(jī)，2-通道（立體聲） 在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量:35mW x 2 @ 16 歐姆 電源電壓:1.62 V ~ 1.98 V 特點(diǎn):I²C，麥克風(fēng)，靜音，短路保護(hù)，音量控制 安裝類型:表面貼裝 供應(yīng)商設(shè)備封裝:25-WLP（2.09x2.09） 封裝/外殼:25-WFBGA，WLCSP 包裝:帶卷 (TR)
LM4832MT/NOPB 功能描述:IC AMP AUDIO PWR .25W AB 28TSSOP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:Boomer® 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:DirectDrive® 類型:H 類 輸出類型:耳機(jī)，2-通道（立體聲） 在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量:35mW x 2 @ 16 歐姆 電源電壓:1.62 V ~ 1.98 V 特點(diǎn):I²C，麥克風(fēng)，靜音，短路保護(hù)，音量控制 安裝類型:表面貼裝 供應(yīng)商設(shè)備封裝:25-WLP（2.09x2.09） 封裝/外殼:25-WFBGA，WLCSP 包裝:帶卷 (TR)
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