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OP400_07

更新时间： 2024-09-16 03:44:51
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16页 400K
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Quad Low Offset, Low Power Operational Amplifier

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Quad Low Offset, Low Power  
Operational Amplifier  
OP400  
FUNCTIONAL BLOCK DIAGRAMS  
FEATURES  
Low input offset voltage: 150 μV maximum  
Low offset voltage drift over –55°C to +125°C: 1.2 pV/°C  
maximum  
Low supply current (per amplifier): 725 μA maximum  
High open-loop gain: 5000 V/mV minimum  
Input bias current: 3 nA maximum  
Low noise voltage density: 11 nV/√Hz at 1 kHz  
Stable with large capacitive loads: 10 nF typical  
Pin-compatible to LM148, HA4741, RM4156, and LT1014,  
with improved performance  
OUTA  
–IN A  
+IN A  
V+  
1
2
3
4
5
6
7
8
16 OUT D  
15 –IN D  
14 +IN D  
13 V–  
OUT A  
–IN A  
+IN A  
V+  
1
2
3
4
5
6
7
14 OUT D  
13 –IN D  
12 +IN D  
11 V–  
–
+
–
+
–
–
+
–
–
+
OP400  
+IN B  
–IN B  
OUT B  
NC  
12 +IN C  
11 –IN C  
10 OUT C  
OP400  
–
–
+
+
+IN B  
–IN B  
OUT B  
10 +IN C  
+
+
9
8
–IN C  
9
NC  
OUT C  
NC = NO CONNECT  
Figure 1. 14-Pin Ceramic DIP (Y-Suffix)  
and 14-Pin Plastic DIP (P-Suffix)  
Figure 2. 16-Pin SOIC (S-Suffix)  
Available in die form  
GENERAL DESCRIPTION  
The OP400 is the first monolithic quad operational amplifier  
that features OP77-type performance. Precision performance is  
not sacrificed with the OP400 to obtain the space and cost  
savings offered by quad amplifiers.  
The OP400 features low power consumption, drawing less than  
725 μA per amplifier. The total current drawn by this quad  
amplifier is less than that of a single OP07, yet the OP400 offers  
significant improvements over this industry-standard op amp.  
Voltage noise density of the OP400 is a low 11 nV/√Hz at  
10 Hz, half that of most competitive devices.  
The OP400 features an extremely low input offset voltage of less  
than 150 μV with a drift of less than 1.2 μV/°C, guaranteed over  
the full military temperature range. Open-loop gain of the  
OP400 is more than 5 million into a 10 kΩ load, input bias  
current is less than 3 nA, CMR is more than 120 dB, and PSRR  
is less than 1.8 μV/V. On-chip Zener zap trimming is used to  
achieve the low input offset voltage of the OP400 and eliminates  
the need for offset nulling. The OP400 conforms to the industry-  
standard quad pinout, which does not have null terminals.  
The OP400 is pin-compatible with the LM148, HA4741,  
RM4156, and LT1014 operational amplifiers and can be used to  
upgrade systems having these devices. The OP400 is an ideal  
choice for applications requiring multiple precision operational  
amplifiers and where low power consumption is critical.  
V+  
BIAS  
VOLTAGE  
LIMITING  
NETWORK  
OUT  
+IN  
–IN  
V–  
Figure 3. Simplified Schematic (One of Four Amplifiers Is Shown)  
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 ofthird 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 and registeredtrademarks arethe property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.461.3113  
www.analog.com  
©2007 Analog Devices, Inc. All rights reserved.  
 
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