參數(shù)資料
型號(hào)： EVAL-AD7705EB
廠商： Analog Devices, Inc.
英文描述： 3 V/5 V, 1 mW 2-/3-Channel 16-Bit, Sigma-Delta ADCs
中文描述： 3伏/ 5伏，1毫瓦2-/3-Channel 16位Σ-Δ模數(shù)轉(zhuǎn)換器
文件頁(yè)數(shù)： 25/32頁(yè)
文件大?。?/td> 264K
代理商： EVAL-AD7705EB
AD7705/AD7706
–25–
REV. A
POWER-ON/RESET FOR AD7705
CONFIGURE & INITIALIZE
m
C/
m
P SERIAL PORT
WRITE TO COMMUNICATIONS REGISTER SELECTING
CHANNEL & SETTING UP NEXT OPERATION TO BE A
WRITE TO THE CLOCK REGISTER (20 HEX)
WRITE TO CLOCK REGISTER SETTING THE CLOCK
BITS IN ACCORDANCE WITH THE APPLIED MASTER
CLOCK SIGNAL AND SELECT UPDATE RATE FOR
SELECTED CHANNEL (0C HEX)
WRITE TO COMMUNICATIONS REGISTER SELECTING
CHANNEL & SETTING UP NEXT OPERATION TO BE A
WRITE TO THE SETUP REGISTER (10 HEX)
WRITE TO SETUP REGISTER CLEARING F SYNC,
SETTING UP GAIN, OPERATING CONDITIONS &
INITIATING A SELF-CALIBRATION ON SELECTED
CHANNEL (40 HEX)
POLL
DRDY
PIN
NO
YES
WRITE TO COMMUNICATIONS REGISTER SETTING UP
NEXT OPERATION TO BE A READ FROM THE DATA
REGISTER (38 HEX)
READ FROM DATA REGISTER
WRITE TO COMMUNICATIONS REGISTER SETTING UP NEXT
OPERATION TO BE A READ FROM THE COMMUNICATIONS
REGISTER (08 HEX)
READ FROM COMMUNICATIONS REGISTER
POLL
DRDY
BIT OF COMMUNICATIONS REGISTER
WRITE TO COMMUNICATIONS REGISTER SETTING UP
NEXT OPERATION TO BE A READ FROM THE DATA
REGISTER (38 HEX)
START
READ FROM DATA REGISTER
DRDY
LOW
NO
YES
DRDY
LOW
Figure 18. Flowchart for Setting Up and Reading from the AD7705
CONFIGURING THE AD7705/AD7706
The AD7705/AD7706 contains six on-chip registers that the
user can accesses via the serial interface. Communication with
any of these registers is initiated by writing to the Communica-
tions Register first. Figure 18 outlines a flow diagram of the
sequence used to configure all registers after a power-up or reset
on the AD7705, similar procedures apply to the AD7706. The
flowchart also shows two different read options—the first where
the
DRDY
pin is polled to determine when an update of the
data register has taken place, the second where the
DRDY
bit of
the Communications Register is interrogated to see if a data
register update has taken place. Also included in the flowing dia-
gram is a series of words that should be written to the registers
for a particular set of operating conditions. These conditions
are gain of one, no filter sync, bipolar mode, buffer off, clock of
4.9512MHz and an output rate of 50 Hz.
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PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
EVAL-AD7705EBZ 功能描述:BOARD EVALUATION FOR AD7705 RoHS:是 類(lèi)別:編程器，開(kāi)發(fā)系統(tǒng) >> 評(píng)估板 - 模數(shù)轉(zhuǎn)換器 (ADC) 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- ADC 的數(shù)量:1 位數(shù):12 采樣率（每秒）:94.4k 數(shù)據(jù)接口:USB 輸入范圍:±VREF/2 在以下條件下的電源（標(biāo)準(zhǔn)）:- 工作溫度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，軟件
EVAL-AD7706EB 制造商:Analog Devices 功能描述:EVALUATION BOARD I.C. - Bulk
EVAL-AD7706EBZ 功能描述:BOARD EVALUATION FOR AD7706 RoHS:是 類(lèi)別:編程器，開(kāi)發(fā)系統(tǒng) >> 評(píng)估板 - 模數(shù)轉(zhuǎn)換器 (ADC) 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- ADC 的數(shù)量:1 位數(shù):12 采樣率（每秒）:94.4k 數(shù)據(jù)接口:USB 輸入范圍:±VREF/2 在以下條件下的電源（標(biāo)準(zhǔn)）:- 工作溫度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，軟件
EVAL-AD7707EB 制造商:Analog Devices 功能描述:EVAL KIT FOR 3V/5 V, 610 V INPUT RANGE, 1 MW 3-CH 16BIT, SIG - Bulk
EVAL-AD7708EB 制造商:Analog Devices 功能描述:EVALUATION BOARD I.C. - Bulk
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