SBOS969E October   2019  – May 2021 OPA2991 , OPA4991 , OPA991

PRODMIX  

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  6. Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information for Single Channel
    5. 6.5 Thermal Information for Dual Channel
    6. 6.6 Thermal Information for Quad Channel
    7. 6.7 Electrical Characteristics
    8. 6.8 Typical Characteristics
  7. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Input Protection Circuitry
      2. 7.3.2  EMI Rejection
      3. 7.3.3  Thermal Protection
      4.     
      5. 7.3.4  Capacitive Load and Stability
      6. 7.3.5  Common-Mode Voltage Range
      7. 7.3.6  Phase Reversal Protection
      8. 7.3.7  Electrical Overstress
      9. 7.3.8  Overload Recovery
      10. 7.3.9  Typical Specifications and Distributions
      11. 7.3.10 Packages With an Exposed Thermal Pad
      12. 7.3.11 Shutdown
    4. 7.4 Device Functional Modes
  8. Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Low-Side Current Measurement
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Development Support
        1. 11.1.1.1 TINA-TI (Free Software Download)
        2. 11.1.1.2 TI Precision Designs
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Related Links
    4. 11.4 Receiving Notification of Documentation Updates
    5. 11.5 Support Resources
    6. 11.6 Trademarks
    7. 11.7 Electrostatic Discharge Caution
    8. 11.8 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

Typical Characteristics

at TA = 25°C, VS = ±20 V, VCM = VS / 2, RLOAD = 10 kΩ connected to VS / 2, and CL = 10 pF (unless otherwise noted)

GUID-54E7D14D-F978-427E-A4A2-03818EFEE20F-low.gif
Distribution from 15462 amplifiers, TA = 25°C
Figure 6-1 Offset Voltage Production Distribution
GUID-080CE582-4C4B-45C2-876D-25B8F38A85C3-low.gif
VCM = V+
Figure 6-3 Offset Voltage vs Temperature
GUID-8F30BD53-E19B-462D-86E5-489301189315-low.gif
TA = 25°C
Figure 6-5 Offset Voltage vs Common-Mode Voltage
GUID-25373B73-391E-4E0B-942E-5A2F7C1A1B3B-low.gif
TA = 125°C
Figure 6-7 Offset Voltage vs Common-Mode Voltage
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Figure 6-9 Offset Voltage vs Power Supply
GUID-BE574036-CB00-42E7-8905-DA42C37A8011-low.gifFigure 6-11 Closed-Loop Gain vs Frequency
GUID-FA3B6704-DE33-4C22-A1EA-5273EA52D492-low.gifFigure 6-13 Input Bias Current vs Temperature
GUID-FDE1144F-DF23-41AC-A3F7-31957B3422BD-low.gifFigure 6-15 Output Voltage Swing vs Output Current (Sinking)
GUID-5E8C9B88-1127-4733-873C-2DFB3B9D19AC-low.gif
f = 0 Hz
Figure 6-17 CMRR vs Temperature (dB)
GUID-83FD7852-EBC8-4391-BFDF-A1BB268290B6-low.gifFigure 6-19 0.1-Hz to 10-Hz Noise
GUID-02A2B318-222B-4089-8089-ABF519366318-low.gif
BW = 80 kHz, VOUT = 1 VRMS
Figure 6-21 THD+N Ratio vs Frequency
GUID-F4D32332-E296-44DE-9DF2-44729C4F1C5E-low.gif
VCM = V–
Figure 6-23 Quiescent Current vs Supply Voltage
GUID-63D4809E-9237-4E72-BBF4-9699A3B376E0-low.gifFigure 6-25 Open-Loop Voltage Gain vs Temperature (dB)
GUID-DCA66A86-8475-484E-A853-97B9102DB3E2-low.gif
G = –1, 10-mV output step
Figure 6-27 Small-Signal Overshoot vs Capacitive Load
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Figure 6-29 Phase Margin vs Capacitive Load
GUID-5B5399C1-A70D-4638-9F52-EE05335E5CAA-low.gif
G = –10
Figure 6-31 Positive Overload Recovery
GUID-0BF30A19-FD3D-4003-AB63-98068C1B6609-low.gif
CL = 20 pF, G = 1, 20-mV step response
Figure 6-33 Small-Signal Step Response, Rising
GUID-74886D40-64FA-4F64-B82D-1959663C1549-low.gif
CL = 20 pF, G = 1
Figure 6-35 Large-Signal Step Response (Rising)
GUID-4A8CE0E0-CD8F-41E4-9B23-F935F20BEC36-low.gif
CL = 20 pF, G = –1
Figure 6-37 Large-Signal Step Response
GUID-214B6C3E-F82F-416C-ADF1-9410DF17F910-low.gifFigure 6-39 Maximum Output Voltage vs Frequency
GUID-E6B96B47-F084-40BE-898D-7C30C4048C46-low.gifFigure 6-41 EMIRR (Electromagnetic Interference Rejection Ratio) vs Frequency
GUID-BEBCFD3D-CAD6-4CFA-8A02-06070764E179-low.gif
Distribution from 60 amplifiers
Figure 6-2 Offset Voltage Drift Distribution
GUID-761480C7-E251-4B18-AF81-7CFFEDF62500-low.gif
VCM = V–
Figure 6-4 Offset Voltage vs Temperature
GUID-B542B89C-1DC2-43C6-BC96-FFAA4AE07C00-low.gif
TA = 25°C
Figure 6-6 Offset Voltage vs Common-Mode Voltage (Transition Region)
GUID-9A2B18C9-6A6A-4C78-97AB-39420B4C9870-low.gif
TA = –40°C
Figure 6-8 Offset Voltage vs Common-Mode Voltage
GUID-48ED14DC-F398-46A3-AACC-9C3A68E82EAD-low.gif
CL = 20 pF
Figure 6-10 Open-Loop Gain and Phase vs Frequency
GUID-48F197E4-A11F-45CF-A50E-2B6895F5A83A-low.gifFigure 6-12 Input Bias Current vs Common-Mode Voltage
GUID-28603F92-E2A2-4B9D-8E7C-914694CB52A2-low.gifFigure 6-14 Output Voltage Swing vs Output Current (Sourcing)
GUID-C54FD3DE-7D9F-403C-8F2E-41CED46A71A5-low.gifFigure 6-16 CMRR and PSRR vs Frequency
GUID-79D601E8-8A63-4898-8C61-E0E3E2BCAF30-low.gif
f = 0 Hz
Figure 6-18 PSRR vs Temperature (dB)
GUID-D1B3C8E3-256E-4146-AD09-9AC96567A00B-low.gifFigure 6-20 Input Voltage Noise Spectral Density vs Frequency
GUID-E3BCB63E-5F0D-4DFF-85FF-F071D64B214E-low.gif
BW = 80 kHz, f = 1 kHz
Figure 6-22 THD+N vs Output Amplitude
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Figure 6-24 Quiescent Current vs Temperature
GUID-85624A2A-BF65-4FEA-835F-B1604D6BB639-low.gifFigure 6-26 Open-Loop Output Impedance vs Frequency
GUID-236C931A-3BE3-49F1-99D3-3317CE041CE7-low.gif
G = 1, 10-mV output step
Figure 6-28 Small-Signal Overshoot vs Capacitive Load
GUID-9C6D3007-4BAB-415B-B592-389FCE6E9189-low.gif
VIN = ±20 V; VS = VOUT = ±17 V
Figure 6-30 No Phase Reversal
GUID-0C7F410E-F838-4D7C-A8D2-01C29267F815-low.gif
G = –10
Figure 6-32 Negative Overload Recovery
GUID-6896E0BA-5257-408C-A172-36F2082B9CF7-low.gif
CL = 20 pF, G = 1, 20-mV step response
Figure 6-34 Small-Signal Step Response, Falling
GUID-BCEF5458-16CD-4975-B054-5ED0C8F03F44-low.gif
CL = 20 pF, G = 1
Figure 6-36 Large-Signal Step Response (Falling)
GUID-AA4E5029-724C-4BC1-A1F1-0A3EDFECF5A6-low.gif
 
Figure 6-38 Short-Circuit Current vs Temperature
GUID-29DF8D90-B267-44C3-B32D-DAE9715A2192-low.gifFigure 6-40 Channel Separation vs Frequency