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參數(shù)資料
| 型號： | EVAL-AD7719EB |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Connector Backshell |
| 中文描述： | 低電壓，低功耗，工廠校準(zhǔn)，16-/24-Bit雙ADC |
| 文件頁數(shù)： | 39/40頁 |
| 文件大?。?/td> | 367K |
| 代理商： | EVAL-AD7719EB |
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REV. 0
AD7719
–39–
Smart Transmitters
Smart transmitters are another key design-in area for the AD7719.
The dual sigma-delta converter, single supply operation, 3-wire
interface capabilities, and small package size are all of benefit is
in smart transmitters. Here, the entire smart transmitter must
operate from the 4 mA-to-20 mA loop. Tolerances in the loop
mean that the amount of current available to power the trans-
mitter is as low as 3.5 mA. Figure 24 shows a block diagram of a
smart transmitter which includes the AD7719.
MICROCONTROLLER
REF OUT2
REF IN
10 F
0.1 F
AV
DD
DV
DD
AIN1
AIN2
CS
DOUT
SCLK
DIN
DGND
AGND
AIN5
AIN5 COM
REFIN2
REFIN(+)
REFIN(
–
)
0.1 F
REF OUT1
CLOCK
LATCH
DATA
4.7 F
COM
C1
C2
C3
V
CC
GND
AD7719
AD421
BOOST V
CC
LV
0.01 F
1k
1000pF
LOOP
POWER
10 F
3.3V
1.25V
DN25D
0.01 F
LOOP
RTN
COMP
DRIVE
MAIN
VARIABLES
SECONDARY
VARIABLES
AIN3
AIN4
Figure 24. Smart Transmitter Employing the AD7719
Not shown in Figure 24 is the isolated power source required to
power the front end. The advantages of the AD7719 in these
applications is the dual channel operation, meaning that the
user does not have to interrupt the main channel when measur-
ing secondary variables, and therefore does not have the latency
associated with the settling times of the digital filter. The fact
that the AD7719 is factory-calibrated means that in the majority
of applications, the user will not have to perform any field cali-
bration given the excellent offset and gain drift performance of
the device as a result of the signal chain chopping employed in
the signal chain.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EVAL-AD7719-EB | 制造商:AD 制造商全稱:Analog Devices 功能描述:Evaluation Board for the AD7719, 16&24-Bit, Dual Sigma Delta ADC |
| EVAL-AD7719EBZ | 功能描述:BOARD EVALUATION FOR AD7719 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 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-AD7721CB | 制造商:Analog Devices 功能描述:EVALUATION BOARD FOR SINGLE SUPPLY, 12/16-BIT 312.5/468.75 KHZ SEGMA-DELTA ADC 制造商:Analog Devices 功能描述:EVALUATION BOARD - Bulk |
| EVAL-AD7722CB | 制造商:Analog Devices 功能描述:EVALUATION CONTROL BOARD I.C. - Bulk |
| EVAL-AD7722CBZ | 功能描述:BOARD EVALUATION FOR AD7722CBZ RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 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 |
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