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參數(shù)資料
| 型號： | 9042 |
| 廠商： | Maxwell Technologies, Inc |
| 英文描述： | 12-Bit, 41 MSPS A/D Converter |
| 中文描述： | 12位，41 MSPS的A / D轉(zhuǎn)換 |
| 文件頁數(shù)： | 22/26頁 |
| 文件大?。?/td> | 396K |
| 代理商： | 9042 |
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All data sheets are subject to change without notice
2005 Maxwell Technologies
All rights reserved.
12-Bit, 41 MSPS A/D Converter
9042
01.07.05 REV 7
Another option for ac-coupling is a transformer. The impedance ratio and frequency characteristics of the transformer
are determned by examning the characteristics of the input signal source (transformer primary connection), and the
9042 input characteristics (transformer secondary connection). “RT” should be chosen to satisfy termnation require-
ments of thesource, given the transformer turns ratio. A blocking capacitor is required to prevent 9042 dc bias currents
fromflowing through the transformer.
Figure 28. Transformer-Coupled Analog Input Signal
When calculating the proper termnation resistor, note that the external load resistor is in parallel with the 9042 analog
input resistance, 250 ohms. The external resistor value can be calculated fromthe following equation:
where Z is desired impedance.
9042
A dc-coupled input configuration (shown below) is limted by the drive amplifier performance. The 9042’s on-chip refer-
ence is buffered using the OP279 dual, rail-to-rail operational amplifier. The resulting voltage is combined with the
analog source using an AD9631. Pending improvements in drive amplifiers, this dc-coupled approach is limted to ~75
dB–80 dB of dynamc performance depending on which drive amplifier is used. The AD9631 and OP279 run off ±5 V.
Figure 29. DC-Coupled Analog Input Circuit
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PDF描述 |
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| 9042RPFE | 12-Bit, 41 MSPS A/D Converter |
| 9042RPFH | 12-Bit, 41 MSPS A/D Converter |
| 9042RPFI | 12-Bit, 41 MSPS A/D Converter |
| 9042RPFK | 12-Bit, 41 MSPS A/D Converter |
| 904BC | Super Flux LEDs |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 90-42 | 制造商:COILCRAFT 制造商全稱:Coilcraft lnc. 功能描述:Axial Lead Chokes |
| 9042 LINE UPL1111-1-62-253-B | 制造商:n/a 功能描述:Breaker Assy |
| 904-200 | 功能描述:支架與墊片 Plastic Spcr .2 in Nylon White RoHS:否 制造商:Schurter 類型:Transipillar Spacers 長度:16 m 螺紋大小:M4 外徑:10 mm 材料:Nylon with Steel 電鍍:Zinc |
| 9042000000 | 功能描述:STRIPSY RED LINE RoHS:是 類別:未定義的類別 >> 其它 系列:* 標(biāo)準(zhǔn)包裝:1 系列:* 其它名稱:MS305720A |
| 90420-0002 | 功能描述:集管和線殼 Molok Pn Cont Hdr Ls LsePce SAu Plt 2Ckt RoHS:否 產(chǎn)品種類:1.0MM Rectangular Connectors 產(chǎn)品類型:Headers - Pin Strip 系列:DF50 觸點類型:Pin (Male) 節(jié)距:1 mm 位置/觸點數(shù)量:16 排數(shù):1 安裝風(fēng)格:SMD/SMT 安裝角:Right 端接類型:Solder 外殼材料:Liquid Crystal Polymer (LCP) 觸點材料:Brass 觸點電鍍:Gold 制造商:Hirose Connector |
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