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參數(shù)資料
| 型號： | 8408 |
| 廠商： | Maxwell Technologies, Inc |
| 英文描述： | Quad 8-Bit Multiplying CMOS D/A Converter with Memory |
| 中文描述： | 四8位乘法的CMOS的D / A轉(zhuǎn)換器與內(nèi)存 |
| 文件頁數(shù)： | 17/20頁 |
| 文件大?。?/td> | 472K |
| 代理商： | 8408 |
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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參數(shù)描述 |
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| 8408 001500 | 功能描述:多芯電纜 16AWG 2C SHIELD 500ft SPOOL BROWN RoHS:否 制造商:Alpha Wire 導(dǎo)體數(shù)量:3 線規(guī) - 美國線規(guī)（AWG）:16 絞合:19 x 29 屏蔽:Shielded 長度:100 ft 電壓額定值:600 V 外殼材料:Polytetrafluoroethylene (PTFE) 絕緣材料:Polytetrafluoroethylene (PTFE) 類型:Communication and Control |
| 8408 001BULK | 制造商:Belden Inc 功能描述:2 #16 EPDM BRD CSM BROWN BULK |
| 84080 | 功能描述:SET SCRPR FLATS 4PC 制造商:apex tool group 系列:* 零件狀態(tài):在售 標(biāo)準(zhǔn)包裝:1 |
| 840800.W3ASA | 制造商:NORTH SAFETY PRODUCTS 功能描述:DURALITE LIFELINE RETRACTABLE 3.5M |
| 84080100 | 制造商:Phoenix Contact 功能描述:ALUBOS CASE 82X32X100MM |
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