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參數資料
型號: AD7714YR
廠商: ANALOG DEVICES INC
元件分類: ADC
英文描述: 3 V/5 V, CMOS, 500 uA Signal Conditioning ADC
中文描述: 5-CH 24-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO24
封裝: WSOIC-24
文件頁數: 38/40頁
文件大小: 306K
代理商: AD7714YR
AD7714
REV. C
–38–
Smart Transmitters
Another area where the low power, single supply, three-wire
interface capabilities is of benefit is in smart transmitters. Here,
the entire smart transmitter must operate from the 4mA to
20mA loop. Tolerances in the loop mean that the amount of
current available to power the transmitter is as low as 3.5mA.
The AD7714 consumes only 500
μ
A, leaving 3mA available for
the rest of the transmitter. Figure 16 shows a block diagram of a
smart transmitter which includes the AD7714. Not shown in
Figure 16 is the isolated power source required to power the
front end.
INPUT/OUTPUT
STAGE
SIGNAL
CONDITIONER
VOLTAGE
REFERENCE
MCLK
OUT
AD7714
ISOLATED SUPPLY
ISOLATION
BARRIER
SENSORS
RTD
mV
ohm
TC
LOOP
RTN
MCLK
IN
COM
3V
4–20mA
DV
DD
AMBIENT
TEMP.
SENSOR
AV
DD
REF IN
AGND
DGND
ISOLATED GROUND
COM
V
CC
3V
VOLTAGE
REGULATOR
MAIN TRANSMITTER ASSEMBLY
BANDPASS
FILTER
D/A
CONVERTER
WAVEFORM
SHAPER
HART
MODEM
BELL 202
MICROCONTROLLER UNIT
*PID
*RANGE SETTING
*CALIBRATION
*LINEARIZATION
*OUTPUT CONTROL
*SERIAL COMMUNICATION
*HART PROTOCOL
VOLTAGE
REFERENCE
Figure 16. Smart Transmitter Using the AD7714
相關PDF資料
PDF描述
AD7714AR-3 VARISTOR 300V RMS 14MM RADIAL
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相關代理商/技術參數
參數描述
AD7714YR-REEL 制造商:Analog Devices 功能描述:ADC Single Delta-Sigma 1ksps 24-bit Serial 24-Pin SOIC W T/R 制造商:Analog Devices 功能描述:ADC SGL DELTA-SIGMA 1KSPS 24BIT SERL 24SOIC W - Tape and Reel
AD7714YR-REEL7 制造商:Analog Devices 功能描述:ADC Single Delta-Sigma 1ksps 24-bit Serial 24-Pin SOIC W T/R 制造商:Analog Devices 功能描述:ADC SGL DELTA-SIGMA 1KSPS 24BIT SERL 24SOIC W - Tape and Reel
AD7714YRU 功能描述:IC ADC SIGNAL COND 3/5V 24-TSSOP RoHS:否 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1,000 系列:- 位數:12 采樣率(每秒):300k 數據接口:并聯 轉換器數目:1 功率耗散(最大):75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC(0.295",7.50mm 寬) 供應商設備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數目和類型:1 個單端,單極;1 個單端,雙極
AD7714YRU-REEL 制造商:Analog Devices 功能描述:ADC Single Delta-Sigma 1ksps 24-bit Serial 24-Pin TSSOP T/R 制造商:Analog Devices 功能描述:ADC SGL DELTA-SIGMA 1KSPS 24BIT SERL 24TSSOP - Tape and Reel
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