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參數(shù)資料
| 型號(hào)： | AD622AR-REEL |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | Single Supply, Rail-to-Rail, Low Cost Instrumentation Amplifier |
| 中文描述： | INSTRUMENTATION AMPLIFIER, 125 uV OFFSET-MAX, 1 MHz BAND WIDTH, PDSO8 |
| 封裝： | SOIC-8 |
| 文件頁(yè)數(shù)： | 10/11頁(yè) |
| 文件大?。?/td> | 151K |
| 代理商： | AD622AR-REEL |
AD622
REV. C
–10–
GROUNDING
Since the AD622 output voltage is developed with respect to the
potential on the reference terminal, it can solve many grounding
problems by simply tying the REF pin to the appropriate “l(fā)ocal
ground.” The REF pin should however be tied to a low imped-
ance point for optimal CMR.
The use of ground planes is recommended to minimize the
impedance of ground returns (and hence the size of dc errors).
In order to isolate low level analog signals from a noisy digital
environment, many data-acquisition components have separate
analog and digital ground returns (Figure 16). All ground pins
from mixed signal components such as analog to digital converters
should be returned through the “high quality” analog ground
plane. Maximum isolation between analog and digital is
achieved by connecting the ground planes back at the supplies.
The digital return currents from the ADC which flow in the
analog ground plane will in general have a negligible effect on
noise performance.
AD622
12
V
IN
1
V
IN
2
V
DD
AGND
DGND
AD7892-2
+5V
–5V
C
V
DD
GND
C
+5V
0.1
m
F
0.1
m
F
0.1
m
F
DIGITAL P.S.
m
PROCESSOR
ANALOG P.S.
Figure 16. Basic Grounding Practice
GROUND RETURNS FOR INPUT BIAS CURRENTS
Input bias currents are those currents necessary to bias the input
transistors of an amplifier. There must be a direct return path
for these currents; therefore when amplifying “floating” input
sources such as transformers, or ac-coupled sources, there must
be a dc path from each input to ground as shown in Figure 17.
Refer to the
Instrumentation Amplifier Application Guide
(free
from Analog Devices) for more information regarding in amp
applications.
+V
S
R
G
1
2
3
8
6
4
5
REFERENCE
V
OUT
7
–V
S
AD622
–INPUT
+INPUT
LOAD
TO POWER
SUPPLY
GROUND
Figure 17a. Ground Returns for Bias Currents with
Transformer Coupled Inputs
+V
S
R
G
1
2
3
8
6
4
5
REFERENCE
V
OUT
7
–V
S
AD622
–INPUT
+INPUT
LOAD
TO POWER
SUPPLY
GROUND
Figure 17b. Ground Returns for Bias Currents with
Thermocouple Inputs
+V
S
R
G
REFERENCE
V
OUT
–V
S
AD622
–INPUT
+INPUT
LOAD
TO POWER
SUPPLY
GROUND
100k
V
100k
V
Figure 17c. Ground Returns for Bias Currents with
AC Coupled Inputs
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD622AN | Single Supply, Rail-to-Rail, Low Cost Instrumentation Amplifier |
| AD622AR | Single Supply, Rail-to-Rail, Low Cost Instrumentation Amplifier |
| AD622AR-REEL7 | Single Supply, Rail-to-Rail, Low Cost Instrumentation Amplifier |
| AD622 | Low Cost Instrumentation Amplifier(低成本測(cè)量放大器) |
| AD623(中文) | Single Supply, Rail-to-Rail, Low Cost Instrument Amplifier(單電源,滿幅度,低成本測(cè)量放大器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| AD622AR-REEL7 | 功能描述:IC AMP INST LP 18MA 8SOIC RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 放大器類型:通用 電路數(shù):4 輸出類型:滿擺幅 轉(zhuǎn)換速率:0.028 V/µs 增益帶寬積:105kHz -3db帶寬:- 電流 - 輸入偏壓:3nA 電壓 - 輸入偏移:100µV 電流 - 電源:3.3µA 電流 - 輸出 / 通道:12mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 12 V，±1.35 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:14-TSSOP 包裝:剪切帶 (CT) 其它名稱:OP481GRUZ-REELCT |
| AD622ARZ | 功能描述:IC AMP INST LP 18MA 8SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 放大器類型:通用 電路數(shù):4 輸出類型:- 轉(zhuǎn)換速率:0.6 V/µs 增益帶寬積:1MHz -3db帶寬:- 電流 - 輸入偏壓:45nA 電壓 - 輸入偏移:2000µV 電流 - 電源:1.4mA 電流 - 輸出 / 通道:40mA 電壓 - 電源，單路/雙路(±):3 V ~ 32 V，±1.5 V ~ 16 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:14-TSSOP 包裝:帶卷 (TR) 其它名稱:LM324ADTBR2G-NDLM324ADTBR2GOSTR |
| AD622ARZ-R7 | 功能描述:IC AMP INST LP 18MA 8SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 放大器類型:通用 電路數(shù):4 輸出類型:滿擺幅 轉(zhuǎn)換速率:0.028 V/µs 增益帶寬積:105kHz -3db帶寬:- 電流 - 輸入偏壓:3nA 電壓 - 輸入偏移:100µV 電流 - 電源:3.3µA 電流 - 輸出 / 通道:12mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 12 V，±1.35 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:14-TSSOP 包裝:剪切帶 (CT) 其它名稱:OP481GRUZ-REELCT |
| AD622ARZ-RL | 功能描述:IC AMP INST LP 18MA 8SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:100 系列:- 放大器類型:通用 電路數(shù):1 輸出類型:- 轉(zhuǎn)換速率:0.2 V/µs 增益帶寬積:- -3db帶寬:- 電流 - 輸入偏壓:100pA 電壓 - 輸入偏移:30µV 電流 - 電源:380µA 電流 - 輸出 / 通道:- 電壓 - 電源，單路/雙路(±):±2 V ~ 18 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:8-SO 包裝:管件 |
| AD622ARZ-RL7 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Low Cost Instrumentation Amplifier |
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