參數(shù)資料
型號(hào): ADAU1961WBCPZ-RL
廠商: Analog Devices Inc
文件頁(yè)數(shù): 26/76頁(yè)
文件大?。?/td> 0K
描述: IC STEREO AUD CODEC LP 32LFCSP
標(biāo)準(zhǔn)包裝: 5,000
類型: 音頻編解碼器
數(shù)據(jù)接口: I²C,串行,SPI?
分辨率(位): 24 b
ADC / DAC 數(shù)量: 2 / 2
三角積分調(diào)變: 無(wú)
S/N 比,標(biāo)準(zhǔn) ADC / DAC (db): 98 / 98
動(dòng)態(tài)范圍,標(biāo)準(zhǔn) ADC / DAC (db): 96 / 98
電壓 - 電源,模擬: 2.97 V ~ 3.63 V
電壓 - 電源,數(shù)字: 2.97 V ~ 3.63 V
工作溫度: -40°C ~ 105°C
安裝類型: 表面貼裝
封裝/外殼: 32-VFQFN 裸露焊盤,CSP
供應(yīng)商設(shè)備封裝: 32-LFCSP-EP(5x5)
包裝: 帶卷 (TR)
ADAU1961
Data Sheet
Rev. A | Page 32 of 76
Noise Gate Mode 2 (see Figure 41) is selected by setting the
NGTYP[1:0] bits to 10. In this mode, the ADAU1961 improves
the sound of the noise gate operation by first fading the PGA
gain over a period of about 100 ms to the minimum PGA gain
value. The ADAU1961 does not do a hard mute after the fade is
complete, so some small background noise will still exist.
THRESHOLD
INPUT
ANALOG
GAIN
DIGITAL
MUTE
OUTPUT
INTERNAL
NOISE GATE
ENABLE SIGNAL
250ms
MIN GAIN
100ms
08
91
5-
0
29
Figure 41. Noise Gate Mode 2 (Analog Fade)
Noise Gate Mode 3 (see Figure 42) is selected by setting the
NGTYP[1:0] bits to 11. This mode is the same as Mode 2 except
that at the end of the PGA fade gain interval, a digital mute is
performed. In general, this mode is the best-sounding mode,
because the audible effect of the digital hard mute is reduced by
the fact that the gain has already faded to a low level before the
mute occurs.
THRESHOLD
INPUT
ANALOG
GAIN
DIGITAL
MUTE
OUTPUT
INTERNAL
NOISE GATE
ENABLE SIGNAL
MIN GAIN
250ms
100ms
08
915
-03
0
Figure 42. Noise Gate Mode 3 (Analog Fade/Digital Mute)
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