參數(shù)資料
型號(hào)： MX839DW
廠商： Electronic Theatre Controls, Inc.
英文描述： Digitally Controlled Analog I/O Processor
中文描述： 數(shù)字控制的模擬I / O處理器
文件頁(yè)數(shù)： 17/20頁(yè)
文件大?。?/td> 165K
代理商： MX839DW
Digitally Controlled Analog I/O Processor
17
MX839 PRELIMINARY INFORMATION
1998 MX
x
COM Inc.
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA
www.mxcom.com Tele: 800 638-5577 336 744-5050 Fax: 336 744-5054
Doc. # 20480164.002
All trademarks and service marks are held by their respective companies.
Operating Characteristics Notes:
1. Measured over a 0 to 30kHz Band.
2. The extremes of the DAC output range (when resistively loaded) is affected by the output impedance of the DAC
buffer. Under these conditions, the output impedance can approach 200
:
. However; when the output is operating
well within the supply; the output impedance will be significantly lower, thereby improving the loaded performance.
3. R
LOAD
= 5k
:
AV
DD
= 5.0V.
4. Loads less than 1k
:
will produce output distortion.
5. Small signal impedance, at AV
DD
= 5V and T
AMB
= 25°C.
6. Differential non-linearity is defined as the difference in width between adjacent code midpoints and the width of an
ideal LSB, divided by the width of an ideal LSB. See Figure 3.
7. Integral non-linearity is defined as the width difference between an actual code midpoint and the line of best fit
through all code midpoints, divided by the width of an ideal LSB. See Figure 4.
8. 6MHz operation at V
DD
= 5.0V only. The ‘C-BUS’ clock must be at lest 4 times slower than the XTAL/CLOCK
frequency.
Analog
Output
Digital
Input
Ideal
Response
Actual Response
Code Width=2LSBs
Differential Non-Linearity=1LSB
0V
000$
To $2FF
To
AV
DD
Figure 3: Differential Non-Linearity of a D/A Converter
000
040
080
0C0
Analog
Output
100
140
180
1C0 200
240
280
2FF
0/768
64/768
128/768
192/768
256/768
320/768
384/768
448/768
512/768
576/768
640/768
704/768
768/768
Digital
Input
5 LSBs
Ideal
Response
Actual Response
Figure 4: Integral Non-Linearity of a D/A Converter
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