參數(shù)資料
型號(hào)： 8408RPFB
廠商： MAXWELL TECHNOLOGIES
元件分類： DAC
英文描述： Quad 8-Bit Multiplying CMOS D/A Converter with Memory
中文描述： PARALLEL, 8 BITS INPUT LOADING, 0.19 us SETTLING TIME, 8-BIT DAC, DFP28
封裝： RAD PAK, LDFP-28
文件頁(yè)數(shù)： 17/20頁(yè)
文件大?。?/td> 472K
代理商： 8408RPFB
M
17
All data sheets are subject to change without notice
2002 Maxwell Technologies
All rights reserved.
Quad 8-Bit Multiplying CMOS
D/A Converter with Memory
8408
08.20.02 REV 1
F
IGURE
13. A D
IGITALLY
P
ROGRAMMABLE
, L
OW
-D
ISTORTION
S
INEWAVE
O
SCILLATOR
A LOW-DISTORTION, PROGRAMMABLE SINEWAVE OSCILLATOR
By varying the previous state-variable filter topology slightly, one can obtain a very low distortion sinewave oscillator
with programmable frequency feature as shown in Figure 13. Again, DAC B and DAC D in tandem control the oscillat-
ing frequency based on the relationship fC = 1/2
π
RC. Positive feedback is accomplished via the 82.5 k
and the 20
k
potentiometer. The Q of the oscillator is determined by the ratio of 10 k
and 475
in series with the FET transis-
tor, which acts as an automatic gain control variable resistor. The AGC action maintains a very stable sinewave ampli-
tude at any frequency. Again, only two ICs accomplish a very useful function.
At the highest frequency setting, the harmonic distortion level measures 0.016%. As the frequencies drop, distortion
also drops to a low of 0.006%. At the lowest frequency setting, distortion came back up to a worst case of 0.035%
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
8408RPFE 制造商:MAXWELL 制造商全稱:Maxwell Technologies 功能描述:Quad 8-Bit Multiplying CMOS D/A Converter with Memory
8408RPFI 制造商:MAXWELL 制造商全稱:Maxwell Technologies 功能描述:Quad 8-Bit Multiplying CMOS D/A Converter with Memory
8408RPFS 制造商:MAXWELL 制造商全稱:Maxwell Technologies 功能描述:Quad 8-Bit Multiplying CMOS D/A Converter with Memory
8408-SRF 制造商:SPC Multicomp 功能描述:STRAIN RELIEF BUSHING KIT; Kit Contents:Installation Tool, Strain Reliefs, Storage Box, Kit Lid Label ;RoHS Compliant: NA
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