參數(shù)資料
型號： LM4935
廠商： National Semiconductor Corporation
元件分類： ADC
英文描述： Audio Sub-System with Dual-Mode Stereo Headphone and Mono High Efficiency Loudspeaker Amplifiers and Multi-Purpose ADC
中文描述： 音頻子系統(tǒng)的雙模單聲道立體聲耳機(jī)和揚(yáng)聲器放大器的高效率和多功能模數(shù)轉(zhuǎn)換器
文件頁數(shù)： 33/112頁
文件大?。?/td> 5017K
代理商： LM4935
12.0 Status & Control Registers
(Continued)
12.12 AGC_1 CONFIGURATION REGISTER
This register is used to control the LM4935’s Automatic Gain Control. (Note 16)
TABLE 13. AGC_1 (0x08h)
Bits
0
Field
Description
AGC_ENABLE
If set the AGC controls the analog microphone preamplifier gain into the system. The microphone
input must be passed to the ADC.
Programs the target level of the AGC. This will depend on the expected transients and desired
headroom. Refer to AGC_TIGHT (bit 7 of 0x09h) for more detail.
AGC_TARGET
000
2
001
2
010
2
011
2
100
2
101
2
110
2
111
2
If set, signals below the noise gate threshold are muted.The noise gate is only activated after a set
period of signal absence.
This field sets the expected background noise level relative to the peak signal level. The sole
presence of signals below this level will not result in an AGC gain change of the input and will be
gated from the ADC output if the NOISE_GATE_ON is set. This level must be set even if the noise
gate is not in use as it is required by the AGC algorithm.
NOISE_GATE_THRES
000
2
001
2
010
2
011
2
100
2
101
2
110
2
111
2
3:1
AGC_TARGET
Target Level
6 dB
8 dB
10 dB
12 dB
14 dB
16 dB
18 dB
20 dB
4
NOISE_GATE_ON
7:5
NOISE_
GATE_
THRES
Level
72 dB
66 dB
60 dB
54 dB
48 dB
42 dB
36 dB
30 dB
Note 16:
See the
AGC overview
.
L
www.national.com
33
相關(guān)PDF資料
PDF描述
LM4935WL Audio Sub-System with Dual-Mode Stereo Headphone and Mono High Efficiency Loudspeaker Amplifiers and Multi-Purpose ADC
LM4935WLX Audio Sub-System with Dual-Mode Stereo Headphone and Mono High Efficiency Loudspeaker Amplifiers and Multi-Purpose ADC
LM4936 Stereo 2W Audio Power Amplifiers with Volume Control and Selectable Control Interface (SPI or I2C)
LM4951 Wide Voltage Range 1.8 Watt Audio Amplifier
LM4953 Ground-Referenced, Ultra Low Noise, Ceramic Speaker Driver
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM49350 制造商:NSC 制造商全稱:National Semiconductor 功能描述:High Performance Audio Codec Sub-System with a Ground-Referenced Stereo Headphone Amplifier
LM49350RL 制造商:Texas Instruments 功能描述:Audio Codec 1ADC / 1DAC 36-Pin uSMD T/R 制造商:Texas Instruments 功能描述:AUDIO CODEC SUBSYSTEM 36MICRO SMDXT
LM49350RL/NOPB 功能描述:接口—CODEC Hi Perf Audio Codec Subsystem RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel
LM49350RL/NOPB 制造商:Texas Instruments 功能描述:Audio Codec IC
LM49350RLEVAL 功能描述:音頻 IC 開發(fā)工具 LM49350RL 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
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*