參數(shù)資料
型號(hào)： AD9271BSVZRL-50
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 13/60頁(yè)
文件大?。?/td> 0K
描述： IC ADC OCT 12BIT 50MSPS 100-TQFP
標(biāo)準(zhǔn)包裝： 1,000
位數(shù)： 12
采樣率（每秒）： 50M
數(shù)據(jù)接口： 串行，SPI?
轉(zhuǎn)換器數(shù)目： 8
功率耗散（最大）： 1.49W
電壓電源： 單電源
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 100-TQFP 裸露焊盤
供應(yīng)商設(shè)備封裝： 100-TQFP-EP（14x14）
包裝： 帶卷 (TR)
輸入數(shù)目和類型： 8 個(gè)單端，單極；8 個(gè)差分，單極
AD9271
Rev. B | Page 20 of
60
THEORY OF OPERATION
ULTRASOUND
The primary application for the AD9271 is medical ultrasound.
Figure 39 shows a simplified block diagram of an ultrasound
system. A critical function of an ultrasound system is the time
gain control (TGC) compensation for physiological signal
attenuation. Because the attenuation of ultrasound signals is
exponential with respect to distance (time), a linear-in-dB VGA
is the optimal solution.
Key requirements in an ultrasound signal chain are very low
noise, active input termination, fast overload recovery, low
power, and differential drive to an ADC. Because ultrasound
machines use beam-forming techniques requiring large binary-
weighted numbers (for example, 32 to 512) of channels, the
lowest power at the lowest possible noise is of key importance.
Most modern machines use digital beam forming. In this
technique, the signal is converted to digital format immediately
following the TGC amplifier, and then beam forming is
accomplished digitally.
The ADC resolution of 12 bits with up to 50 MSPS sampling
satisfies the requirements of both general-purpose and high-
end systems.
Power consumption and low cost are of primary importance in
low-end and portable ultrasound machines, and the AD9271 is
designed for these criteria.
For additional information regarding ultrasound systems, refer
Component Choice,” Analog Dialogue, Volume 36, Number 3,
May–July 2002, and “The AD9271—A Revolutionary Solution
for Portable Ultrasound,” Analog Dialogue, Volume 41, Number 7,
July 2007.
Tx HV
BEAM FORMER
CENTRAL CONTROL
Rx BEAM FORMER
(B AND F MODES)
COLOR
DOPPLER (PW)
PROCESSING
(F MODE)
IMAGE AND
MOTION
PROCESSING
(B MODE)
SPECTRAL
DOPPLER
PROCESSING
MODE
DISPLAY
AUDIO
OUTPUT
Tx BEAM FORMER
CW (ANALOG)
BEAM FORMER
AMPs
MULTICHANNELS
TRANSDUCER
ARRAY
128, 256, ETC.,
ELEMENTS
BIDIRECTIONAL
CABLE
HV
MUX/
DEMUX
T/R
SWITCHES
06
30
4-
0
77
AD9271
AAF
VGA
ADC
LNA
CW
Figure 39. Simplified Ultrasound System Block Diagram
相關(guān)PDF資料
PDF描述
VE-J6Z-EY-S CONVERTER MOD DC/DC 2V 20W
MS27656T15B19PB CONN RCPT 19POS WALL MNT W/PINS
LTC487ISW#TR IC DRIVER RS485 QUAD LP 16SOIC
VE-J6K-MW-B1 CONVERTER MOD DC/DC 40V 100W
VI-BVV-MY CONVERTER MOD DC/DC 5.8V 50W
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD9271BSVZRL7-25 制造商:AD 制造商全稱:Analog Devices 功能描述:Octal LNA/VGA/AAF/ADC and Crosspoint Switch
AD9271BSVZRL7-40 制造商:AD 制造商全稱:Analog Devices 功能描述:Octal LNA/VGA/AAF/ADC and Crosspoint Switch
AD9271BSVZRL7-50 制造商:AD 制造商全稱:Analog Devices 功能描述:Octal LNA/VGA/AAF/ADC and Crosspoint Switch
AD9272 制造商:AD 制造商全稱:Analog Devices 功能描述:Octal LNA/VGA/AAF/ADC and Crosspoint Switch
AD9272_09 制造商:AD 制造商全稱:Analog Devices 功能描述:Octal LNA/VGA/AAF/ADC and Crosspoint Switch
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*