參數(shù)資料
型號: MAX97002EWP+T
廠商: Maxim Integrated Products
文件頁數(shù): 13/37頁
文件大?。?/td> 0K
描述: IC AUDIO SUBSYSTEM 20WLP
產(chǎn)品培訓模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝: 1
系列: DirectDrive®
類型: D 類
輸出類型: 1-通道(單聲道),帶立體聲耳機
在某負載時最大輸出功率 x 通道數(shù)量: 920mW x 1 @ 8 歐姆; 37mW x 2 @ 16 歐姆
電源電壓: 2.7 V ~ 5.5 V
特點: 消除爆音,差分輸入,I²C,靜音,關(guān)閉,音量控制
安裝類型: 表面貼裝
供應(yīng)商設(shè)備封裝: 20-WLP
封裝/外殼: 20-WFBGA,WLBGA
包裝: 標準包裝
其它名稱: MAX97002EWP+TDKR
Audio Subsystem with Mono Class D
Speaker and Class H Headphone Amplifiers
MAX97002
20
Ultra-Low EMI Filterless Output Stage
Traditional Class D amplifiers require the use of exter-
nal LC filters or shielding in order to meet EN55022B
electromagnetic-interference (EMI) regulation stan-
dards. Maxim’s active emissions limiting edge-rate
control circuitry and spread-spectrum modulation
reduces EMI emissions, while maintaining up to 87%
efficiency. Maxim’s spread-spectrum modulation
mode flattens wideband spectral components, while
proprietary techniques ensure that the cycle-to-cycle
variation of the switching period does not degrade audio
reproduction or efficiency. The MAX97002’s spread-
spectrum modulator randomly varies the switching
frequency by Q20kHz around the center frequency
(250kHz). Above 10MHz, the wideband spectrum looks
like noise for EMI purposes (see Figure 4).
Figure 4. EMI with 15cm of Speaker Cable
FREQUENCY (MHz)
AMPLITUDE
(dBV/m)
280
260
240
220
200
180
160
140
120
100
80
60
0
10
20
30
40
-10
30
300
FREQUENCY (MHz)
AMPLITUDE
(dBV/m)
950
900
850
800
750
700
650
600
550
500
450
400
0
10
20
30
40
-10
300
350
1000
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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