參數(shù)資料
型號: TDA7406T
廠商: STMICROELECTRONICS
元件分類: 消費(fèi)家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP44
封裝: 10 X 10 MM, TQFP-44
文件頁數(shù): 4/49頁
文件大小: 830K
代理商: TDA7406T
TDA7406T
12/49
Figure 4. 1st and 2nd Order Loudness @ Attn. = 15dB, fP=400Hz
2.4 Soft Mute
The digitally controlled Soft Mute stage allows signal muting/demutingwith a programmable slope. The Mute
time is selectable among 4 values: 0.48, 0.96, 123 and 324ms. The mute process can either be activated by the
Soft Mute pin or via the I
2C-bus. This slope is realized in a special S-shaped curve to mute slow in the critical
regions (see Figure 5).
For timing purposes the I
2C-bus output register (Bit0 = SM read bit) is set to 1 from the start of muting until the
end of de-muting.
Figure 5. Soft Mute-Timing
Note: Please notice that a started Mute-action is always terminated and could not be interrupted by a change of the mute -signal.
dB
Hz
-20.0
-15.0
-10.0
-5.0
0.0
10.0
100.0
1.0K
10.0K
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