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AD704JNZ

更新时间： 2024-11-20 12:33:55
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亚德诺 - ADI 运算放大器
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16页 267K
描述
Picoampere Input Current Quad Bipolar Op Amp

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AD704JNZ 数据手册

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Picoampere Input Current Quad  
Bipolar Op Amp  
AD704  
FEATURES  
CONNECTION DIAGRAMS  
High dc precision  
OUTPUT  
–IN  
1
2
3
4
5
6
7
8
16  
15  
14  
OUTPUT  
–IN  
150 µV maximum offset voltage  
1.5 µV/°C maximum offset voltage drift  
270 pA maximum input bias current  
0.3 pA/°C typical IB drift  
1
4
+IN  
+IN  
OUTPUT  
–IN  
1
2
3
4
5
6
7
14  
13  
12  
11  
10  
9
OUTPUT  
–IN  
AD704  
TOP VIEW  
+V  
S
13 –V  
S
1
4
+IN  
+IN  
+IN  
–IN  
12  
11  
10  
9
+IN  
AD704  
TOP VIEW  
+V  
S
–V  
S
2
3
–IN  
Low noise: 0.5 µV p-p  
+IN  
–IN  
+IN  
OUTPUT  
NC  
OUTPUT  
NC  
Typical noise: 0.1 Hz to 10 Hz  
Low power: 600 µA maximum supply current per amplifier  
Dual version: AD706  
2
3
–IN  
(Not to Scale)  
OUTPUT  
8
OUTPUT  
(Not to Scale)  
NC = NO CONNECT  
Figure 1. 14-Lead Plastic DIP (N)  
Figure 2. 16-Lead SOIC (R) Package  
APPLICATIONS  
Industrial/process controls  
Weigh scales  
3
2
1
20 19  
ECG/EKG instrumentation  
Low frequency active filters  
18  
17  
4
5
6
7
8
+IN4  
NC  
+IN1  
NC  
1
2
4
AD704  
TOP VIEW  
(Not to Scale)  
16  
15  
14  
+V  
–V  
S
S
GENERAL DESCRIPTION  
NC  
NC  
The AD704 is a quad, low power bipolar op amp that has the  
low input bias current of a BiFET amplifier and offers a signifi-  
cantly lower IB drift over temperature. It uses superbeta bipolar  
input transistors to achieve picoampere input bias current levels  
(similar to FET input amplifiers at room temperature), while its  
IB typically increases only by 5× at 125°C (unlike a BiFET amp,  
for which IB doubles every 10°C, resulting in a 1000× increase at  
125°C). In addition, the AD704 achieves 150 μV offset voltage and  
the low noise characteristics of a precision bipolar input op amp.  
3
+IN2  
+IN3  
9
10 11 12 13  
NC = NO CONNECT  
Figure 3. 20-Terminal LCC  
(E-20-1) Package  
100  
10  
Because it has only 1/20 the input bias current of an OP07, the  
AD704 does not require the commonly used balancing resistor.  
Furthermore, the current noise is 1/5 that of the OP07, which  
makes the AD704 usable with much higher source impedances.  
At 1/6 the supply current (per amplifier) of the OP07, the  
AD704 is better suited for today’s higher density circuit boards  
and battery-powered applications.  
TYPICAL JFET AMP  
1
0.1  
AD704  
The AD704 is an excellent choice for use in low frequency active  
filters in 12- and 14-bit data acquisition systems, in precision  
instrumentation, and as a high quality integrator. The AD704 is  
internally compensated for unity gain stability. The AD704J is  
rated over the commercial temperature range of 0°C to 70°C.  
The AD704A is rated over the industrial temperature of −40°C  
to +85°C. The AD704S is rated over the military temperature  
range of −55°C to +125°C, processed to MIL-STD-883B.  
0.01  
–55  
25  
TEMPERATURE (°C)  
125  
Figure 4. Input Bias Current Over Temperature  
Table 1. Low IB @ 125°C  
Model 30V  
16V  
1.3 to 5V  
AD8603  
AD8607  
AD8609  
Next Generation  
N/A  
AD8622  
Single  
Dual  
Quad  
N/A  
AD706  
AD704  
AD8663  
AD8667  
AD8669  
AD8624  
Rev. E  
Information furnished by Analog Devices is believed to be accurate and reliable. However, no  
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other  
rights of third parties that may result from its use. Specifications subject to change without notice. No  
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.  
Trademarks and registered trademarks are the property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700 www.analog.com  
Fax: 781.461.3113 ©2001-2010 Analog Devices, Inc. All rights reserved.  
 
 
 
 
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中文翻译

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AD704JNZ 替代型号

型号 品牌 替代类型 描述 数据表
OP497GPZ ADI

类似代替

 Precision Picoampere Input Current Quad Operational Amplifier
OPA4277PA TI

功能相似

 High Precision OPERATIONAL AMPLIFIERS
OP4177ARZ ADI

功能相似

 Precision Low Noise, Low Input Bias Current Operational Amplifiers

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