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OP270FZ

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21
Dual Very Low Noise Precision
Operational Amplifier
Data Sheet
OP270
Rev. F Document Feedback
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FEATURES
Very low noise density of 5 nV/√Hz at 1 kHz maximum
Excellent input offset voltage of 75 μV maximum
Low offset voltage drift of 1 μV/°C maximum
Very high gain of 1500 V/mV minimum
Outstanding CMR of 106 dB minimum
Slew rate of 2.4 V/μs typical
Gain bandwidth product of 5 MHz typical
Industry-standard 8-lead dual pinout
FUNCTIONAL BLOCK DIAGRAMS
00325-001
–IN A
1
+IN A
2
NC
3
V–
4
OUT A
16
NC
15
NC
14
V+
13
NC
5
NC
12
+IN B
6
NC
11
–IN B
7
OUT B
10
NC
8
NC
9
NC = NO CONNECT
OP270
Figure 1. 16-Lead SOIC
(S-Suffix)
00325-002
OP270
OUT A
AB
1
–IN A
2
+IN A
3
V–
4
V+
8
OUT B
7
–IN B
6
+IN B
5
Figure 2. 8-Lead PDIP (P-Suffix)
8-Lead CERDIP
(Z-Suffix)
GENERAL DESCRIPTION
The OP270 is a high performance, monolithic, dual operational
amplifier with exceptionally low voltage noise density (5 nV/√Hz
maximum at 1 kHz). It offers comparable performance to the
industry-standard OP27 from Analog Devices, Inc.
The OP270 features an input offset voltage of less than 75 μV
and an offset drift of less than 1 μV/°C, guaranteed over the full
military temperature range. Open-loop gain of the OP270 is more
than 1,500,000 into a 10 kΩ load, ensuring excellent gain accuracy
and linearity, even in high gain applications. The input bias
current is less than 20 nA, which reduces errors due to signal
source resistance. With a common-mode rejection (CMR) of
greater than 106 dB and a power supply rejection ratio (PSRR)
of less than 3.2 μV/V, the OP270 significantly reduces errors
due to ground noise and power supply fluctuations. The power
consumption of the dual OP270 is one-third less than two OP27
devices, a significant advantage for power conscious applications.
The OP270 is unity-gain stable with a gain bandwidth product
of 5 MHz and a slew rate of 2.4 V/μs.
The OP270 offers excellent amplifier matching, which is
important for applications such as multiple gain blocks, low
noise instrumentation amplifiers, dual buffers, and low noise
active filters.
The OP270 conforms to the industry-standard 8-lead CERDIP
and PDIP pinouts.
For higher speed applications, the ADA4004-2 or the AD8676
are recommended. For a quad op amp, see the OP470 data sheet.
OP270* PRODUCT PAGE QUICK LINKS
Last Content Update: 02/23/2017
COMPARABLE PARTS
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DOCUMENTATION
Application Notes
• AN-649: Using the Analog Devices Active Filter Design
Tool
• AN-940: Low Noise Amplifier Selection Guide for Optimal
Noise Performance
Data Sheet
• OP270: Dual Very Low Noise Precision Operational
Amplifier Data Sheet
TOOLS AND SIMULATIONS
• OP270 SPICE Macro Model
DESIGN RESOURCES
• OP270 Material Declaration
• PCN-PDN Information
• Quality And Reliability
• Symbols and Footprints
DISCUSSIONS
View all OP270 EngineerZone Discussions.
SAMPLE AND BUY
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TECHNICAL SUPPORT
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number.
DOCUMENT FEEDBACK
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OP270 Data Sheet
Rev. F | Page 2 of 20
TABLE OF CONTENTS
Features .............................................................................................. 1
Functional Block Diagrams ............................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Electrical Specifications ............................................................... 4
Absolute Maximum Ratings ............................................................ 5
ESD Caution .................................................................................. 5
Typical Performance Characteristics ............................................. 6
Test Circuits ..................................................................................... 11
Applications Information .............................................................. 12
Voltage and Current Noise ........................................................ 12
Total Noise and Source Resistance ........................................... 12
Noise Measurements .................................................................. 14
Capacitive Load Driving and Power Supply Considerations .... 15
Unity-Gain Buffer Applications ............................................... 15
Low Phase Error Amplifier ....................................................... 16
Five-Band, Low Noise, Stereo Graphic Equalizer .................. 16
Digital Panning Control ............................................................ 17
Dual Programmable Gain Amplifier ....................................... 17
Outline Dimensions ....................................................................... 19
Ordering Guide .......................................................................... 20
REVISION HISTORY
10/15—Rev. E to Rev. F
Changes to General Description Section ...................................... 1
Changes to Supply Voltage Parameter and Differential Input
Voltage Parameter, Table 3 .............................................................. 5
Deleted Table 4; Renumbered Sequentially .................................. 5
2/10—Rev. D to Rev. E
Change to Input Noise Current Density Parameter, Table 1 ...... 3
Change to Figure 18 ......................................................................... 8
2/09—Rev. C to Rev. D
Updated Format .................................................................. Universal
Reorganized Layout ............................................................ Universal
Changes to Figure 7 .......................................................................... 6
Changes to Figure 22 ........................................................................ 9
Deleted Applications Heading ...................................................... 11
Changes to Figure 44 ...................................................................... 17
Changes to Figure 46 ...................................................................... 18
Updated Outline Dimensions ....................................................... 19
Changes to Ordering Guide .......................................................... 20
4/03—Rev. B to Rev. C
Deletion of OP270A model ............................................... Universal
Edits to Features ................................................................................. 1
Changes to Specifications ................................................................. 2
Deletion of Wafer Limits and Dice Characteristics ...................... 4
Changes to Absolute Maximum Ratings ........................................ 4
Changes to Ordering Guide ............................................................. 4
Changes to Equations in Noise Measurements section ............. 10
Change to Figure 10 ....................................................................... 11
Updated Outline Dimensions ....................................................... 14
11/02—Rev. A to Rev. B
Updated Ordering Guide .............................................................. 15
9/02—Rev. 0 to Rev. A
Edits to Absolute Maximum Ratings .............................................. 5
Edits to Ordering Guide ................................................................ 15
2/01—Revision 0: Initial Version
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21

OP270FZ

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Precision Amplifiers VERY LOW-NOISE PRECISION
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