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參數(shù)資料
| 型號： | AD620A |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | 運動控制電子 |
| 英文描述： | Precision Instrumentation Amplifier |
| 中文描述： | 精密儀表放大器 |
| 文件頁數(shù)： | 12/16頁 |
| 文件大小： | 571K |
| 代理商： | AD620A |
AD620
REV. E
–12–
3k
V
+5V
DIGITAL
DATA
OUTPUT
ADC
REF
IN
AGND
20k
V
10k
V
20k
V
AD620B
G=100
499
V
1.7mA
0.10mA
0.6mA
MAX
3k
V
3k
V
3k
V
2
1
8
3
7
6
5
4
1.3mA
MAX
AD705
Figure 35. A Pressure Monitor Circuit which Operates on a +5 V Single Supply
Pressure Measurement
Although useful in many bridge applications such as weigh
scales, the AD620 is especially suitable for higher resistance
pressure sensors powered at lower voltages where small size and
low power become more significant.
Figure 35 shows a 3 k
pressure transducer bridge powered
from +5 V. In such a circuit, the bridge consumes only 1.7 mA.
Adding the AD620 and a buffered voltage divider allows the
signal to be conditioned for only 3.8 mA of total supply current.
Small size and low cost make the AD620 especially attractive for
voltage output pressure transducers. Since it delivers low noise
and drift, it will also serve applications such as diagnostic non-
invasive blood pressure measurement.
Medical ECG
The low current noise of the AD620 allows its use in ECG
monitors (Figure 36) where high source resistances of 1 M
or
higher are not uncommon. The AD620’s low power, low supply
voltage requirements, and space-saving 8-lead mini-DIP and
SOIC package offerings make it an excellent choice for battery
powered data recorders.
Furthermore, the low bias currents and low current noise
coupled with the low voltage noise of the AD620 improve the
dynamic range for better performance.
The value of capacitor C1 is chosen to maintain stability of the
right leg drive loop. Proper safeguards, such as isolation, must
be added to this circuit to protect the patient from possible
harm.
G = 7
AD620A
0.03Hz
HIGH
PASS
FILTER
OUTPUT
1V/mV
+3V
–3V
R
8.25k
V
24.9k
V
V
AD705J
G = 143
C1
1M
V
R4
10k
V
R1
R3
24.9k
OUTPUT
AMPLIFIER
PATIENT/CIRCUIT
PROTECTION/ISOLATION
Figure 36. A Medical ECG Monitor Circuit
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD620AN | RE Series - Econoline Unregulated DC-DC Converters; Input Voltage (Vdc): 3.3V; Output Voltage (Vdc): 15V; Power: 1W; Industry Standard Pinout; 1kVDC & 2kVDC Isolation; UL94V-0 Package Material; Optional Continuous Short Circuit Protected; Fully Encapsulated; Custom Solutions Available; Efficiency to 85% |
| AD620AR | Precision Instrumentation Amplifier |
| AD620AR-REEL7 | Precision Instrumentation Amplifier |
| AD620B | Precision Instrumentation Amplifier |
| AD620ACHIPS | Precision Instrumentation Amplifier |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD620ACHIPS | 制造商:AD 制造商全稱:Analog Devices 功能描述:Low Cost Low Power Instrumentation Amplifier |
| AD620AN | 功能描述:IC AMP INST LP LN 18MA 8DIP RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:50 系列:- 放大器類型:J-FET 電路數(shù):2 輸出類型:- 轉(zhuǎn)換速率:3.5 V/µs 增益帶寬積:1MHz -3db帶寬:- 電流 - 輸入偏壓:30pA 電壓 - 輸入偏移:2000µV 電流 - 電源:200µA 電流 - 輸出 / 通道:- 電壓 - 電源，單路/雙路(±):7 V ~ 36 V，±3.5 V ~ 18 V 工作溫度:0°C ~ 70°C 安裝類型:通孔 封裝/外殼:8-DIP（0.300"，7.62mm） 供應商設(shè)備封裝:8-PDIP 包裝:管件 |
| AD620ANZ | 功能描述:IC AMP INST LP LN 18MA 8DIP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝: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） 供應商設(shè)備封裝:14-TSSOP 包裝:帶卷 (TR) 其它名稱:LM324ADTBR2G-NDLM324ADTBR2GOSTR |
| AD620AR | 功能描述:IC AMP INST LP LN 18MA 8SOIC RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:2,500 系列:Excalibur™ 放大器類型:J-FET 電路數(shù):1 輸出類型:- 轉(zhuǎn)換速率:45 V/µs 增益帶寬積:10MHz -3db帶寬:- 電流 - 輸入偏壓:20pA 電壓 - 輸入偏移:490µV 電流 - 電源:1.7mA 電流 - 輸出 / 通道:48mA 電壓 - 電源，單路/雙路(±):4.5 V ~ 38 V，±2.25 V ~ 19 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應商設(shè)備封裝:8-SOIC 包裝:帶卷 (TR) |
| AD620AR | 制造商:Analog Devices 功能描述:SEMICONDUCTORSLINEAR |
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