參數(shù)資料
型號： AD1953YSTRL7
廠商： ANALOG DEVICES INC
元件分類： 消費家電
英文描述： 16-bit fixed point DSP with Flash
中文描述： SPECIALTY CONSUMER CIRCUIT, PQFP48
封裝： PLASTIC, MS-026BBC, LQFP-48
文件頁數(shù)： 32/36頁
文件大小： 750K
代理商： AD1953YSTRL7
REV. 0
AD1953
–32–
The sub output of the AD1953 has a lower drive strength than
the left and right output pins (
±
0.25 mA peak versus
±
0.5 mA
peak for the left and right outputs). For this reason, it is best to
use higher resistor values in the external sub filter. Figure 24
shows a recommended filter design for the subwoofer output
pins used as a full-bandwidth channel in a custom-designed
program. This design is also a 100 kHz Bessel filter.
For best performance, a large (> 10
μ
F) capacitor should be
connected between the FILTCAP pin and analog ground. This
pin is connected to an internal node in the bias generator, and
by adding an external capacitance to this pin, the thermal noise
of the left/right channels is minimized. The sub channel is not
affected by this connection.
1.50k
3.01k
2.80k
2.7nF
499
1.00k
806
1nF
820pF
270pF
2.2nF
549
– INPUT
+ INPUT
OUT
Figure 22. Recommended External Analog Filter for
Main Channels
GRAPHICAL CUSTOM PROGRAMMING TOOLS
Custom programming tools are available for the AD1953 from
ADI. These graphical tools allow the user to modify the default
signal processing flow by individually placing each block (e.g.,
biquad filter, Phat Stereo, dynamics processor) and connecting
them in any desired fashion. The program then creates a file
that is loaded into the AD1953’s program RAM. All of the
contents of the parameter RAM can also be set using these
tools. For more information on these programming tools, email
SigmaDSP@analog.com.
3.01k
11k
11k
56nF
1.5k
15nF
5.62k
5.62k
27nF
6.8nF
220nF
604
– INPUT
+ INPUT
OUT
560nF
270nF
68pF
150pF
2.2nF
Figure 23. Recommended External Analog Filter for
Sub Channel
3.01k
11k
11k
56nF
1.5k
5.62k
5.62k
27nF
604
– INPUT
+ INPUT
OUT
68pF
150pF
2.2nF
Figure 24. Recommended External Analog Filter for Full
Bandwidth Signals on the Sub Channel Output
相關(guān)PDF資料
PDF描述
AD1954 CONNECTOR COAXIAL BNC
AD1954YS RESISTOR
AD1954YSRL 16-bit fixed point DSP with Flash
AD1954YST RESISTOR
AD1954YSTRL Hook-Up Wire; Conductor Size AWG:12; No. Strands x Strand Size:65 x 30; Jacket Color:Yellow; Approval Bodies:UL, CSA; Approval Categories:UL AWM Style 1015, CSA Type TEW, JQA-F-, Passes VW-1 Flame Test; Conductor Material:Copper RoHS Compliant: Yes
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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