SBOS925E December   2020  – October 2024 OPA2391 , OPA391 , OPA4391

PRODMIX  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information: OPA391
    5. 5.5 Thermal Information: OPA2391
    6. 5.6 Thermal Information: OPA4391
    7. 5.7 Electrical Characteristics: OPA391DCK and OPA2391YBJ
    8. 5.8 Electrical Characteristics: OPA2391DGK and OPA4391PW
    9. 5.9 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Low Input Bias Current
      2. 6.3.2 Input Differential Voltage
      3. 6.3.3 Capacitive Load Drive
      4. 6.3.4 EMI Rejection
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Applications
      1. 7.2.1 Three-Terminal CO Gas Sensor
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
        3. 7.2.1.3 Application Curve
      2. 7.2.2 4-mA to 20-mA Loop Design
        1. 7.2.2.1 Application Curve
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Development Support
        1. 8.1.1.1 PSpice® for TI
        2. 8.1.1.2 TINA-TI™ Simulation Software (Free Download)
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
    3. 8.3 Receiving Notification of Documentation Updates
    4. 8.4 Support Resources
    5. 8.5 Trademarks
    6. 8.6 Electrostatic Discharge Caution
    7. 8.7 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • PW|14
Thermal pad, mechanical data (Package|Pins)
Orderable Information

5.9 Typical Characteristics

at TA = 25°C, VS = 5.0 V, VCM = VS / 2, RLOAD = 10 kΩ connected to VS / 2, and CL = 100 pF (unless otherwise noted)

OPA391 OPA2391 OPA4391 Offset Voltage Distribution
 
Figure 5-1 Offset Voltage Distribution
OPA391 OPA2391 OPA4391 Offset Voltage vs Temperature
5 units
Figure 5-3 Offset Voltage vs Temperature
OPA391 OPA2391 OPA4391 Offset Voltage vs Common-Mode Voltage
30 units, VS = 5.5 V
Figure 5-5 Offset Voltage vs Common-Mode Voltage
OPA391 OPA2391 OPA4391 Open-Loop Gain and Phase vs Frequency
RL = no load
Figure 5-7 Open-Loop Gain and Phase vs Frequency
OPA391 OPA2391 OPA4391 Input Bias Current vs Common-Mode Voltage
VS = 1.7 V, common-mode voltage referenced to VS / 2
Figure 5-9 Input Bias Current vs Common-Mode Voltage
OPA391 OPA2391 OPA4391 Input Bias Current vs Common-Mode Voltage
VS = 5.5 V, common-mode voltage referenced to VS / 2
Figure 5-11 Input Bias Current vs Common-Mode Voltage
OPA391 OPA2391 OPA4391 Negative Input Bias Current Distribution
 
Figure 5-13 Negative Input Bias Current Distribution
OPA391 OPA2391 OPA4391 Input Bias Current vs Temperature
 
Figure 5-15 Input Bias Current vs Temperature
OPA391 OPA2391 OPA4391 Output Voltage Swing vs Output Current (Maximum Supply)
 
Figure 5-17 Output Voltage Swing vs Output Current
(Maximum Supply)
OPA391 OPA2391 OPA4391 CMRR vs Temperature
5 units
Figure 5-19 CMRR vs Temperature
OPA391 OPA2391 OPA4391 0.1-Hz to 10-Hz Noise
 
Figure 5-21 0.1-Hz to 10-Hz Noise
OPA391 OPA2391 OPA4391 THD+N Ratio vs Frequency
VOUT = 1 VRMS
Figure 5-23 THD+N Ratio vs Frequency
OPA391 OPA2391 OPA4391 Quiescent Current vs Supply Voltage
5 units
Figure 5-25 Quiescent Current vs Supply Voltage
OPA391 OPA2391 OPA4391 Open-Loop Gain vs Temperature
5 units
Figure 5-27 Open-Loop Gain vs Temperature
OPA391 OPA2391 OPA4391 Small-Signal Overshoot vs Capacitive Load (10-mV Step)
G = +1
Figure 5-29 Small-Signal Overshoot vs Capacitive Load
(10-mV Step)
OPA391 OPA2391 OPA4391 No Phase Reversal
 
Figure 5-31 No Phase Reversal
OPA391 OPA2391 OPA4391 Negative Overload Recovery
 
Figure 5-33 Negative Overload Recovery
OPA391 OPA2391 OPA4391 Small-Signal Step Response (10-mV Step)
G = –1
Figure 5-35 Small-Signal Step Response (10-mV Step)
OPA391 OPA2391 OPA4391 Large-Signal Step Response (4-V Step)
G = –1
Figure 5-37 Large-Signal Step Response (4-V Step)
OPA391 OPA2391 OPA4391 Short-Circuit Current vs Temperature
 
Figure 5-39 Short-Circuit Current vs Temperature
OPA391 OPA2391 OPA4391 EMIRR vs Frequency
PRF = –10 dBm
Figure 5-41 EMIRR vs Frequency
OPA391 OPA2391 OPA4391 Offset Voltage Drift Distribution
45 units, TA = –40°C to +125°C
Figure 5-2 Offset Voltage Drift Distribution
OPA391 OPA2391 OPA4391 Offset Voltage vs Common-Mode Voltage
5 units
Figure 5-4 Offset Voltage vs Common-Mode Voltage
OPA391 OPA2391 OPA4391 Offset Voltage vs Supply Voltage
5 units, VS = 5.5 V
Figure 5-6 Offset Voltage vs Supply Voltage
OPA391 OPA2391 OPA4391 Closed-Loop Gain and Phase vs Frequency
 
Figure 5-8 Closed-Loop Gain and Phase vs Frequency
OPA391 OPA2391 OPA4391 Input Bias Current vs Common-Mode Voltage
VS = 3.3 V, common-mode voltage referenced to VS / 2
Figure 5-10 Input Bias Current vs Common-Mode Voltage
OPA391 OPA2391 OPA4391 Input Bias Current vs Common-Mode Voltage
VS = 5.5 V, common-mode voltage referenced to VS / 2
Figure 5-12 Input Bias Current vs Common-Mode Voltage
OPA391 OPA2391 OPA4391 Positive Input Bias Current Distribution
 
Figure 5-14 Positive Input Bias Current Distribution
OPA391 OPA2391 OPA4391 Output Voltage Swing vs Output Current (Maximum Supply)
 
Figure 5-16 Output Voltage Swing vs Output Current
(Maximum Supply)
OPA391 OPA2391 OPA4391 PSRR vs Frequency
 
Figure 5-18 PSRR vs Frequency
OPA391 OPA2391 OPA4391 PSRR vs Temperature
5 units
Figure 5-20 PSRR vs Temperature
OPA391 OPA2391 OPA4391 Input Voltage Noise Spectral Density vs Frequency
 
Figure 5-22 Input Voltage Noise Spectral Density vs Frequency
OPA391 OPA2391 OPA4391 THD+N vs Output Amplitude
f = 1 kHz, filter BW = 80 kHz
Figure 5-24 THD+N vs Output Amplitude
OPA391 OPA2391 OPA4391 Quiescent Current vs Temperature
5 units
Figure 5-26 Quiescent Current vs Temperature
OPA391 OPA2391 OPA4391 Open-Loop Output Impedance vs Frequency
 
Figure 5-28 Open-Loop Output Impedance vs Frequency
OPA391 OPA2391 OPA4391 Small-Signal Overshoot vs Capacitive Load (10-mV Step)
G = –1
Figure 5-30 Small-Signal Overshoot vs Capacitive Load
(10-mV Step)
OPA391 OPA2391 OPA4391 Positive Overload Recovery
 
Figure 5-32 Positive Overload Recovery
OPA391 OPA2391 OPA4391 Small-Signal Step Response (10-mV Step)
G = +1
Figure 5-34 Small-Signal Step Response (10-mV Step)
OPA391 OPA2391 OPA4391 Large-Signal Step Response (4-V Step)
G = +1
Figure 5-36 Large-Signal Step Response (4-V Step)
OPA391 OPA2391 OPA4391 Settling Time (1-V Positive Step)
 
Figure 5-38 Settling Time (1-V Positive Step)
OPA391 OPA2391 OPA4391 Maximum Output Voltage vs Frequency
 
Figure 5-40 Maximum Output Voltage vs Frequency