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ADA4177-4

更新时间： 2024-09-17 00:44:55
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亚德诺 - ADI /
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31页 854K
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OVP and EMI Protected, Precision, Low Noise and Bias Current Op Amps

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OVP and EMI Protected, Precision,  
Low Noise and Bias Current Op Amps  
Data Sheet  
ADA4177-1/ADA4177-2/ADA4177-4  
FEATURES  
PIN CONNECTION DIAGRAM  
OUT A  
–IN A  
+IN A  
V–  
1
2
3
4
8
7
6
5
V+  
Low offset voltage: 60 µV maximum at 25°C (8-lead and  
14-lead SOIC)  
Low offset voltage drift: 1 µV/°C maximum (8-lead and  
14-lead SOIC)  
ADA4177-2  
OUT B  
–IN B  
+IN B  
TOP VIEW  
(Not to Scale)  
Figure 1. ADA4177-2  
Low input bias current: 1 nA maximum at 25°C  
Low voltage noise density: 8 nV/√Hz typical at 1 kHz  
Large signal voltage gain (AVO): 100 dB minimum over full  
supply voltage and operating temperature  
Input overvoltage protection to 32 V above and below the  
supply voltage rail  
Integrated EMI filter  
Applications for this amplifier include sensor signal conditioning  
(such as thermocouples, RTDs, and strain gages), process control  
front-end amplifiers, and precision diode power measurement in  
optical and wireless transmission systems.  
70 dB typical rejection at 1000 MHz  
90 dB typical rejection at 2400 MHz  
Rail-to-rail output swing  
Low supply current: 500 µA typical per amplifier  
Wide bandwidth  
The ADA4177-2 and ADA4177-4 operate over the −40°C to  
Gain bandwidth product (AV = +100): 3.5 MHz typical  
Unity-gain crossover (AV = +1): 3.5 MHz typical  
−3 dB bandwidth (AV = +1): 6 MHz typical  
Dual-supply operation  
Specified at 5 V to 15 V, operates over 2.5 V to 18 V  
Unity-gain stable  
+125°C industrial temperature range. The ADA4177-1 and the  
ADA4177-2 are available in an 8-lead SOIC package and an 8-lead  
MSOP package. The ADA4177-4 is available in a 14-lead TSSOP  
and a 14-lead SOIC package.  
12  
10  
8
No phase reversal  
V
= ±15V  
SY  
6
4
APPLICATIONS  
Wireless base station control circuits  
Optical network control circuits  
Instrumentation  
2
0
–2  
–4  
–6  
–8  
–10  
Sensors and controls  
Thermocouples, resistor thermal detectors (RTDs), strain  
gages, shunt current measurements  
Precision filters  
GENERAL DESCRIPTION  
–50  
–30  
–10  
10  
30  
50  
V
(V)  
IN  
The ADA4177-1 single channel, ADA4177-2 dual channel, and  
ADA4177-4 quad channel amplifiers feature low offset voltage  
(2 µV typical) and drift (1 µV/°C maximum), low input bias  
current, low noise, and low current consumption (500 µA  
typical). Outputs are stable with capacitive loads of more than  
1000 pF with no external compensation.  
Figure 2. Overvoltage Current Limiting, Voltage Follower Configuration  
Table 1. Evolution of Protected Input Op Amps by Generation1  
Gen. 1,  
OVP  
(10 V)  
Gen. 2,  
OVP (25 V)  
Gen. 3,  
OVP (32 V)  
Gen. 4  
EMI Filters  
Gen. 5, OVP  
(32 V) + EMI  
OP191  
OP291  
OP491  
ADA4091-2  
ADA4091-4  
ADA4092-4  
ADA4096-2  
ADA4096-4  
AD8657  
AD8659  
ADA4177-1  
ADA4177-2  
ADA4177-4  
The inputs of the ADA4177-1, ADA4177-2, and ADA4177-4 set a  
new standard in precision amplifier robustness, providing input  
protection against signal excursions 32 V beyond either supply, as  
well as 70 dB of rejection for electromagnetic interference (EMI) at  
1000 MHz.  
AD8546  
AD8548  
ADA4661-2  
ADA4666-2  
1 Gen. stands for Generation.  
Rev. C  
Document Feedback  
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  
rightsof third parties that may result fromits 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 andregisteredtrademarks 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 ©2014–2015 Analog Devices, Inc. All rights reserved.  
Technical Support  
www.analog.com  
 
 
 
 
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