參數(shù)資料
型號： MAX97003EWP+T
廠商： Maxim Integrated Products
文件頁數(shù)： 18/48頁
文件大小： 0K
描述： IC AUDIO SUBSYSTEM LN 20WLP
標準包裝： 2,500
類型： D 類；H 類
輸出類型： 1-通道（單聲道）或 2-通道（立體聲）
在某負載時最大輸出功率 x 通道數(shù)量： 1W x 2 @ 8 歐姆
電源電壓： 2.7 V ~ 5.5 V
特點： 消除爆音，差分輸入，關閉
安裝類型： *
供應商設備封裝： *
封裝/外殼： *
包裝： *
Maxim Integrated Products 25
MAX97003
High-Efficiency, Low-Noise Audio Subsystem
Expander
The IC’s speaker and headphone amplifier signal paths
include and expander. The expander reduces the noise
floor when there is no desired input signal by attenuat-
ing peak signals that are below the selected expander
threshold (Figure 8). Attenuation is achieved by automati-
cally modifying the speaker or headphone volume to a
lower gain setting. Expansion ratio and attack time set-
tings are configured by registers 0x0C for the headphone
path and 0x0D for the speaker path. The expansion ratio
determines the input:output relationship used when the
input signal is below the selected threshold. The expan-
sion attack time determines the time-per-step used when
the expander engages. Figure 9 and Figure 10 show
the benefits of the expander by comparing the output
with the expander disabled against the output with the
expander enabled.
The expander acts as a noise gate when the expansion
ratio is set to an input:output relationship of infinity:1. In
this case, all signals below the selected threshold are
muted.
Figure 8. Expander Gain Curve
Figure 9. High-Signal to Low-Signal Transition, Expander
Disabled
Figure 10. High-Signal to Low-Signal Transition, Expander
Enabled
THRESHOLD
1 TO 32
1200
∞:1
4:1
2:1
1:1
INPUT
(mVP)
OUTPUT
(mVP)
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相關代理商/技術參數(shù)
參數(shù)描述
MAX9700AEBC 制造商:Maxim Integrated Products 功能描述:1.2W LOW EMI FILTERLESS CLASS D - Rail/Tube
MAX9700AEBC+ 制造商:Maxim Integrated Products 功能描述:AUD AMP SPKR 1CH MONO 1.6W CLS-D 12UCSP - Rail/Tube
MAX9700AEBC+T 功能描述:音頻放大器 1.2W L-EMI Filterles Class D Audio Amp RoHS:否 制造商:STMicroelectronics 產品: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
MAX9700AEBC-T 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產品: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
MAX9700AETB 制造商:Maxim Integrated Products 功能描述:1.2W, LOW EMI, FILTERLESS, CLASS D AUDIO AMPL - Rail/Tube
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