Analog Devices

2007??41??3?

PDF????(PDF, 1,100 KB)

8??,1 bit 10 MSPS~50MSPS ??
AD9271:????????????????????

By Rob Reeder [Rob Reeder@analog.com]

Corey Petersen [Corey Petersen@analog.com]

 

????????1??????????????????????????????????????,??????(RF)????????,?????????????????????????,??????????????????????????????????????????????,?????????????????????????????,????????????????????(PDA)覧???????????????????????????????????????

???????????
???????????????????????(DBF)???????????????????????????????????????????,?????????????????????????16~32(???)???????????????????????,?????????:????????(????????)?????????(?????????)?????????,DBF???????1?????????????????,?????????,??????????????????????????????

Analog Devices:??DBF??????

?1. ??DBF??????

DBF???????????????(ABF)?? - ??????????????????? - ??????????????????,?????????????????,????????,?????????????,?????????????????????????????????????DBF???????????,????????,?????(???????)?????(?????????????????????)?

????,???DBF???????????????????(IC)??????????????(Rx)????????????(LNA)覧??????????;???????(VGA)覧????????????,??????????????????,???????(????????????);??????(AAF)??????(ADC)???????DBF???????????????????????????????????,??????????????????????????????64~256????????,??????????????????16~64????????

????????????
????????????????????????????????????,????????(EMS)???????????????,???????????(ER)?????????????????,???ER????????????????????????????????????????????????????????,???????

????????????????????????,??????????????????????????

?????????????????????????????????????????????????

?????????(NDT)??????(PM)??????????????????????????????????,???????????????????????????????????????????????????????????????????????

?????????????????:??????????????????;???????????????????????,???????????????????????

??AD9271??????????
ADI?????AD92712(??2) - ????????????? ????,????????,???14-mm × 14-mm × 1.2-mm ? ????????,??8???????????????,?? ????????????????????????????? ?,AD9271???????????1/3,????25% - ?40 MSPS??????????150 mW?AD9271????????? ???????,?????????????????????

 

Analog Devices:AD9271????

?2. AD9271????

AD9271????8????????,???????????????(LNA)????????(VGA)???????(AAF)??????(ADC)????????????????(B???????????,F?????B?????????,??????)???????????????,??????????????????????????????

???????????????(CW)??????D??,???????????????????,CW??????????????,??4??????????,??4??????????CW???????????????,????????????????????????????????????????,??????????????????????覧??AD9271?????????????,AD9271???????????????????CW??????????????????????????????????????????AD9271??????????,??????????????AD8339??????????????AD8339???????????????????????????????????,??????????????????????????????

Dynamic?????????
???????????????????????1 dB/cm/MHz???,????8 MHz??????4 cm??覧?????????????????????覧????????????????????????????64 dB(?4 × 8 × 2)(??????????2)?????50 dB??????,???????????????????????,???????????119 dB?????????????,?10 MHz?????1.4 nV/vHz?????0.333 Vp-p??(FS)????88 dB?????????????????????????10 × log(N??)?,??128???????????21 dB,??????????????100~120 dB???

?????????????????????????????????,???????????????ADC,????VGA????????????????????????????????????TGA?LNA???????ADC????????AD9271?10 MHz?????88 dB???????(158 dB/√Hz)??????????????????????(??),??3???LNA??????????,???????????????????????????????

Analog Devices:TGC?12 bit ADC?????

?3. TGC?12 bit ADC?????

???????????????,???????????????????????????AD9271?88 dB????????????,?????????????VGA,??AD83324? ?????????0.72 nV/√Hz,??1???????AD8332????????????????????????????????????????????????????????????????,??????????IC?????????????????????(IP)?

 

?1. ADI????????

??
LNA
????
LNA
????
???????
(???ADC)
?????????
(@ 10 MHz BW)
AD8332
550 mV p-p
0.74 nV/rt-Hz
0.82 nV/rt-Hz
97 dB
AD8335
625 mV p-p
1.2 nV/rt-Hz
1.3 nV/rt-Hz
95 dB
AD9271
400 mV p-p
333 mV p-p
250 mV p-p
1.4 nV/rt-Hz
1.2 nV/rt-Hz
1.1 nV/rt-Hz
1.65 nV/rt-Hz
1.44 nV/rt-Hz
1.31 nV/rt-Hz
89 dB
88 dB
87 dB

 

??
?????????????,??????????????????????????????????????????????AD9271???????IC??,?????????????????????????8??????????????????????AD9271????????????????????????,???????????????????

 

???????

  1. Bandes, Alan. How Are Your Bearings Holding Up? Find Out with Ultrasound. Sensors Magazine. July 2006. pp. 24-27.
  2. Brunner, Eberhard. How Ultrasound System Considerations Influence Front-End Component Choice. Analog Dialogue 36. Part 1. 2002.
  3. Kisslo, Joseph A. and David B. Adams. Principles of Doppler Echocardiography and the Doppler Examination #1. London: Ciba-Geigy. 1987
  4. Kuijpers, F. A. The Role of Technology in Future Medical Imaging. Medicamundi. 1995. Vol. 40. No. 3. Philips Medical Systems.5.
  5. Meire, Hylton B. and Pat Farrant. Basic Ultrasound. Wiley. 1995. pp. 1-66.

????覧?2007?7????

1 http://www.analog.com/library/analogdialogue/archives/36-03/ultrasound/index.html

2 ADI website: www.analog.com (Search) AD9271

3 ADI website: www.analog.com (Search) AD8339

4 ADI website: www.analog.com (Search) AD8332


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