參數(shù)資料
型號(hào)： AD7656
廠商： Analog Devices, Inc.
英文描述： 250 kSPS, 6-Channel,Simultaneous Sampling, Bipolar 12/14/16-Bit ADC
中文描述： 250 kSPS的6通道同步采樣ADC的雙極12/14/16-Bit
文件頁(yè)數(shù)： 24/25頁(yè)
文件大?。?/td> 308K
代理商： AD7656
AD7658/AD7657/AD7656
Preliminary Technical Data
APPLICATION HINTS
Layout
The printed circuit board that houses the AD7656 should be
designed so the analog and digital sections are separated and
confined to certain areas of the board. This facilitates the use of
ground planes that can be easily separated. Digital and analog
ground planes should be joined in only one place, preferably
underneath the AD7656, or, at least, as close as possible to the
AD7656. If the AD7656 is in a system where multiple devices
require analog to digital ground connections, the connection
should still be made at one point only, a star ground point,
which should be established as close as possible to the AD7656.
Rev. PrI | Page 24 of 25
It is recommended to avoid running digital lines under the
device as these will couple noise onto the die. The analog
ground plane should be allowed to run under the AD7656 to
avoid noise coupling. Fast switching signals like CONVST or
clocks should be shielded with digital ground to avoid radiating
noise to other sections of the board and should never run near
analog signal paths. Crossover of digital and analog signals
should be avoided. Traces on different but close layers of the
board should run at right angles to each other. This will reduce
the effect of feedthrough through the board.
The power supply lines to the AD7656 should use as large a
trace as possible to provide low impedance paths and reduce
the effect of glitches on the power supply lines. Good
decoupling is also important to lower the supplies impedance
presented to the AD7656 and to reduce the magnitude of the
supply spikes. Decoupling ceramic capacitors, typically 100 nF,
should be placed on all of the power supply pins, power
supplies pins V
DD
, V
SS
, AV
CC
, DV
CC
, and V
DRIVE
. The decoupling
capacitors should be placed close to, and ideally right up
against, these pins and their corresponding ground pins.
Additionally, low ESR 10
μ
F capacitors should be located in the
vicinity of the ADC to further reduce low frequency ripple.
The decoupling capacitors should be close to the ADC and
connected with short and large traces to minimize parasitic
inductances.
相關(guān)PDF資料
PDF描述
AD7656BSTZ 250 kSPS, 6-Channel,Simultaneous Sampling, Bipolar 12/14/16-Bit ADC
AD7656BSTZ-REEL 250 kSPS, 6-Channel,Simultaneous Sampling, Bipolar 12/14/16-Bit ADC
AD7657 250 kSPS, 6-Channel,Simultaneous Sampling, Bipolar 12/14/16-Bit ADC
AD7657BSTZ 250 kSPS, 6-Channel,Simultaneous Sampling, Bipolar 12/14/16-Bit ADC
AD7657BSTZ-REEL 250 kSPS, 6-Channel,Simultaneous Sampling, Bipolar 12/14/16-Bit ADC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD7656-1 制造商:AD 制造商全稱:Analog Devices 功能描述:250 kSPS, 6-Channel, Simultaneous Sampling, Bipolar, 16-/14-/12-Bit ADC
AD7656A-1BSTZ 功能描述:16 Bit Analog to Digital Converter 6 Input 6 SAR 64-LQFP (10x10) 制造商:analog devices inc. 系列:iCMOS? 包裝:托盤 零件狀態(tài):有效 位數(shù):16 采樣率（每秒）:250k 輸入數(shù):6 輸入類型:單端 數(shù)據(jù)接口:SPI，并聯(lián)，DSP 配置:S/H-ADC 無(wú)線電 - S/H:ADC:1:1 A/D 轉(zhuǎn)換器數(shù):6 架構(gòu):SAR 參考類型:外部， 內(nèi)部 電壓 - 電源，模擬:5V 電壓 - 電源，數(shù)字:5V 特性:仿真采樣，真正的雙極性 工作溫度:-40°C ~ 85°C 封裝/外殼:64-LQFP 供應(yīng)商器件封裝:64-LQFP（10x10） 標(biāo)準(zhǔn)包裝:1
AD7656A-1BSTZ-RL 功能描述:16 Bit Analog to Digital Converter 6 Input 6 SAR 64-LQFP (10x10) 制造商:analog devices inc. 系列:iCMOS? 包裝:帶卷（TR） 零件狀態(tài):有效 位數(shù):16 采樣率（每秒）:250k 輸入數(shù):6 輸入類型:單端 數(shù)據(jù)接口:SPI，并聯(lián)，DSP 配置:S/H-ADC 無(wú)線電 - S/H:ADC:1:1 A/D 轉(zhuǎn)換器數(shù):6 架構(gòu):SAR 參考類型:外部， 內(nèi)部 電壓 - 電源，模擬:5V 電壓 - 電源，數(shù)字:5V 特性:仿真采樣，真正的雙極性 工作溫度:-40°C ~ 85°C 封裝/外殼:64-LQFP 供應(yīng)商器件封裝:64-LQFP（10x10） 標(biāo)準(zhǔn)包裝:1,500
AD7656ABSTZ 功能描述:16 Bit Analog to Digital Converter 6 Input 6 SAR 64-LQFP (10x10) 制造商:analog devices inc. 系列:iCMOS? 包裝:托盤 零件狀態(tài):有效 位數(shù):16 采樣率（每秒）:250k 輸入數(shù):6 輸入類型:單端 數(shù)據(jù)接口:SPI，并聯(lián)，DSP 配置:S/H-ADC 無(wú)線電 - S/H:ADC:1:1 A/D 轉(zhuǎn)換器數(shù):6 架構(gòu):SAR 參考類型:外部， 內(nèi)部 電壓 - 電源，模擬:5V 電壓 - 電源，數(shù)字:5V 特性:仿真采樣，真正的雙極性 工作溫度:-40°C ~ 85°C 封裝/外殼:64-LQFP 供應(yīng)商器件封裝:64-LQFP（10x10） 標(biāo)準(zhǔn)包裝:1
AD7656ABSTZ-RL 功能描述:16 Bit Analog to Digital Converter 6 Input 6 SAR 64-LQFP (10x10) 制造商:analog devices inc. 系列:iCMOS? 包裝:帶卷（TR） 零件狀態(tài):有效 位數(shù):16 采樣率（每秒）:250k 輸入數(shù):6 輸入類型:單端 數(shù)據(jù)接口:SPI，并聯(lián)，DSP 配置:S/H-ADC 無(wú)線電 - S/H:ADC:1:1 A/D 轉(zhuǎn)換器數(shù):6 架構(gòu):SAR 參考類型:外部， 內(nèi)部 電壓 - 電源，模擬:5V 電壓 - 電源，數(shù)字:5V 特性:仿真采樣，真正的雙極性 工作溫度:-40°C ~ 85°C 封裝/外殼:64-LQFP 供應(yīng)商器件封裝:64-LQFP（10x10） 標(biāo)準(zhǔn)包裝:1,500
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