參數(shù)資料
型號(hào)： AD7706EB
廠商： Analog Devices, Inc.
英文描述： High Performance Switched Capacitor Universal Filter; Package: PDIP; No of Pins: 14; Temperature Range: 0°C to +70°C
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（264.12十一）
文件頁數(shù)： 30/32頁
文件大?。?/td> 264K
代理商： AD7706EB
AD7705/AD7706
–30–
REV. A
AD7705
V
DD
+5V
AIN1(+)
AIN1(–)
REF IN(–)
GND
MCLK IN
MCLK OUT
RESET
DRDY
DOUT DIN
CS
SCLK
REF IN(+)
6.25k
V
400
m
A
R
L1
R
L2
R
L3
R
L4
RTD
Figure 24. RTD Measurement Using the AD7705
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 AD7705 consumes only 320
μ
A, leaving at least 3mA
available for the rest of the transmitter. Figure 25 shows a block
diagram of a smart transmitter which includes the AD7705. The
AD7705 with its dual input channel is ideally suited to systems
requiring an auxiliary channel whose measured variable is used
to correct that of the primary channel.
V
DD
GND
REF IN
ISOLATED SUPPLY
4.7
m
F
100k
V
MCLK IN
MCLK OUT
AD7705
ISOLATED GROUND
MICROCONTROLLER UNIT
PID
RANGE SETTING
CALIBRATION
LINEARIZATION
OUTPUT CONTROL
SERIAL COMMUNICATION
HART PROTOCOL
V
CC
COM
V
CC
BOOST
REF OUT1
REF OUT2
REF IN
AD421
C1 C2 C3
COM
LOOP
RTN
COMP
DRIVE
4.7
m
F
0.01
m
F
0.1
m
F
2.2
m
F
DN25D
1k
V
1000pF
0.01
m
F
0.01
m
F
0.0033
m
F
ISOLATION
BARRIER
SENSORS
RTD
mV
V
TC
MAIN TRANSMITTER ASSEMBLY
4mA
TO
20mA
Figure 25. Smart Transmitter Using the AD7705
相關(guān)PDF資料
PDF描述
AD7706(中文) 3 V/5 V, 1 Mw 2-/3-Channel 16-Bit, Sigma-Delta ADCs(三輸入通道16位A/D轉(zhuǎn)換器)
AD7705(中文) 3 V/5 V, 1 Mw 2-/3-Channel 16-Bit, Sigma-Delta ADCs(完全差分輸入通道16位A/D轉(zhuǎn)換器)
AD7707BR 3 V/5 V, +-10 V Input Range, 1 mW 3-Channel 16-Bit, Sigma-Delta ADC
AD7707BRU 3 V/5 V, +-10 V Input Range, 1 mW 3-Channel 16-Bit, Sigma-Delta ADC
AD7707 ECONOLINE: REC2.2-S_DR/H1 - 2.2W DIP Package- 1kVDC Isolation- Regulated Output- UL94V-0 Package Material- Continuous Short Circiut Protection- Internal SMD design- 100% Burned In- Efficiency to 75%
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD7707 制造商:AD 制造商全稱:Analog Devices 功能描述:3 V/5 V, +-10 V Input Range, 1 mW 3-Channel 16-Bit, Sigma-Delta ADC
AD7707BR 功能描述:IC ADC 16BIT 3CH 20-SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 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)目和類型:1 個(gè)單端，單極；1 個(gè)單端，雙極
AD7707BR-REEL 制造商:Analog Devices 功能描述:ADC Single Delta-Sigma 500sps 16-bit Serial 20-Pin SOIC W T/R 制造商:Analog Devices 功能描述:ADC SGL DELTA-SIGMA 0.5KSPS 16BIT SERL 20SOIC W - Tape and Reel
AD7707BR-REEL7 制造商:Analog Devices 功能描述:ADC Single Delta-Sigma 500sps 16-bit Serial 20-Pin SOIC W T/R 制造商:Analog Devices 功能描述:ADC SGL DELTA-SIGMA 0.5KSPS 16BIT SERL 20SOIC W - Tape and Reel
AD7707BRU 功能描述:IC ADC 16BIT 3CH 20-TSSOP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 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)目和類型:1 個(gè)單端，單極；1 個(gè)單端，雙極
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