參數(shù)資料
型號(hào): AD7946BRMRL7
廠商: ANALOG DEVICES INC
元件分類(lèi): ADC
英文描述: 14-Bit, 500 kSPS PulSAR⑩ ADC in MSOP/QFN
中文描述: 1-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO10
封裝: MO-187-BA, MSOP-10
文件頁(yè)數(shù): 10/27頁(yè)
文件大?。?/td> 301K
代理商: AD7946BRMRL7
AD7946
Preliminary Technical Data
Rev Pr D | Page 18 of 27
CS MODE 3-Wire, No BUSY Indicator
This mode is usually used when a single AD7946 is connected
to an SPI compatible digital host. The connection diagram is
shown in Figure 29 and the corresponding timing is given in
Figure 30.
With SDI tied to VIO, a rising edge on CNV initiates a
conversion, selects the CS mode, and forces SDO to high
impedance. Once a conversion is initiated, it will continue to
completion irrespective of the state of CNV. For instance, it
could be useful to bring CNV low to select other SPI devices,
such as analog multiplexers, but CNV must be returned high
before the minimum conversion time and held high until the
maximum conversion time to avoid the generation of the BUSY
signal indicator. When the conversion is complete, the AD7946
enters the acquisition phase and powers down. When CNV
goes low, the MSB is output onto SDO. The remaining data bits
are then clocked by subsequent SCK falling edges. The data is
valid on both SCK edges. Although the rising edge can be used
to capture the data, a digital host also using the SCK falling edge
will allow a faster reading rate provided it has an acceptable
hold time. After the 14th SCK falling edge or when CNV goes
high, whichever is earlier, SDO returns to high impedance.
CNV
SCK
SDO
SDI
DATA IN
CLK
CONVERT
VIO
DIGITAL HOST
AD7946
Figure 29. CS Mode 3-Wire, No BUSY Indicator
Connection Diagram (SDI High)
04656-P
rC-008
SDO
D13
D12
D11
D1
D0
tDIS
SCK
1
2
3
12
13
14
tSCK
tSCKL
tSCKH
tHSDO
tDSDO
CNV
CONVERSION
ACQUISITION
tCONV
tCYC
ACQUISITION
SDI = 1
tCNVH
tACQ
tEN
Figure 30. CS Mode 3-Wire, No BUSY Indicator Serial Interface Timing (SDI High)
相關(guān)PDF資料
PDF描述
ADP1110AR-12 Top Entry Connector Hood; Enclosure Material:Aluminum Alloy; For Use With:C146 Rectangular Circular Connectors; Thread Size:PG 29; Connecting Termination:Screw; Gender:Male; No. of Contacts:48; Operating Voltage:400V; Series:C-146 RoHS Compliant: Yes
AD573JN 10-Bit A/D Converter
AD746JN Dual Precision, 500 ns Settling, BiFET Op Amp
ADP3157JR 5-Bit Programmable Synchronous Controller for Pentium III Processors
ADP3159JRU 4-Bit Programmable Synchronous Buck Controllers
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD7946BRM-RL7 制造商:Analog Devices 功能描述:ADC Single SAR 500ksps 14-bit Serial 10-Pin MSOP T/R
AD7946BRMZ 功能描述:IC ADC 14BIT 500KSPS SAR 10-MSOP RoHS:是 類(lèi)別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:PulSAR® 其它有關(guān)文件:TSA1204 View All Specifications 標(biāo)準(zhǔn)包裝:1 系列:- 位數(shù):12 采樣率(每秒):20M 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:2 功率耗散(最大):155mW 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:48-TQFP 供應(yīng)商設(shè)備封裝:48-TQFP(7x7) 包裝:Digi-Reel® 輸入數(shù)目和類(lèi)型:4 個(gè)單端,單極;2 個(gè)差分,單極 產(chǎn)品目錄頁(yè)面:1156 (CN2011-ZH PDF) 其它名稱(chēng):497-5435-6
AD7946BRMZRL7 功能描述:IC ADC 14BIT 500KSPS 10-MSOP RoHS:是 類(lèi)別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:PulSAR® 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):12 采樣率(每秒):300k 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散(最大):75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類(lèi)型:表面貼裝 封裝/外殼:24-SOIC(0.295",7.50mm 寬) 供應(yīng)商設(shè)備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類(lèi)型:1 個(gè)單端,單極;1 個(gè)單端,雙極
AD7947 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:3mW, 100kSPS, 14-Bit ADC in 6-Lead SOT-23
AD7947BCP 制造商:Analog Devices 功能描述:ADC SGL SAR 500KSPS 14BIT SERL 10LFCSP - Bulk