SBOS807E December   2016  – May 2020 OPA187 , OPA2187 , OPA4187

UNLESS OTHERWISE NOTED, this document contains PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      OPAx187 Offers Precision Low-Side Current Measurement Capability
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin Functions: OPA187
    2.     Pin Functions: OPA2187
    3.     Pin Functions: OPA4187
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information: OPA187
    5. 6.5 Thermal Information: OPA2187
    6. 6.6 Thermal Information: OPA4187
    7. 6.7 Electrical Characteristics: High-Voltage Operation
    8. 6.8 Electrical Characteristics: Low-Voltage Operation
    9. 6.9 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Operating Characteristics
      2. 7.3.2 Phase-Reversal Protection
      3. 7.3.3 Input Bias Current Clock Feedthrough
      4. 7.3.4 Internal Offset Correction
      5. 7.3.5 EMI Rejection
      6. 7.3.6 Capacitive Load and Stability
      7. 7.3.7 Electrical Overstress
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 High-Side Voltage-to-Current (V-I) Converter
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curve
      2. 8.2.2 Discrete INA + Attenuation for ADC With 3.3-V Supply
      3. 8.2.3 Bridge Amplifier
      4. 8.2.4 Low-Side Current Monitor
      5. 8.2.5 Programmable Power Supply
      6. 8.2.6 RTD Amplifier With Linearization
  9. 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
        3. 11.1.1.3 WEBENCH® Filter Designer
    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

6.9 Typical Characteristics

Table 1. Typical Characteristic Graphs

DESCRIPTION FIGURE
Offset Voltage Production Distribution Figure 1
Offset Voltage Drift Distribution Figure 2
Offset Voltage vs Temperature Figure 3
Offset Voltage vs Common-Mode Voltage Figure 4
Offset Voltage vs Power Supply Figure 5
Open-Loop Gain and Phase vs Frequency Figure 6
Closed-Loop Gain vs Frequency Figure 7
IB vs Common-Mode Voltage Figure 8
Input Bias Current vs Temperature Figure 9
Output Voltage Swing vs Output Current Figure 10
CMRR and PSRR vs Frequency (Referred-to-Input) Figure 11
CMRR vs Temperature Figure 12
PSRR vs Temperature Figure 13
0.1-Hz to 10-Hz Noise Figure 14
Input Voltage Noise Spectral Density vs Frequency Figure 15
THD+N Ratio vs Frequency Figure 16
THD+N vs Output Amplitude Figure 17
Quiescent Current vs Supply Voltage Figure 18
Quiescent Current vs Temperature Figure 19
Open-Loop Gain vs Temperature Figure 20
Open-Loop Output Impedance vs Frequency Figure 21
Small-Signal Overshoot vs Capacitive Load (G = 1) (10-mV Output Step) Figure 22
No Phase Reversal Figure 23
Positive Overload Recovery Figure 24
Negative Overload Recovery Figure 25
Small-Signal Step Response (10 mV) Figure 26, Figure 27
Large-Signal Step Response Figure 28, Figure 29
Large-Signal Settling Time (10-V Positive Step) Figure 30
Large-Signal Settling Time (10-V Negative Step) Figure 31
Short-Circuit Current vs Temperature Figure 32
Maximum Output Voltage vs Frequency Figure 33
Crosstalk vs Frequency Figure 34
EMIRR IN+ vs Frequency Figure 35
at VS = ±18 V, VCM = VS / 2, RLOAD = 10 kΩ connected to VS / 2, and CL = 100 pF (unless otherwise noted)
OPA187 OPA2187 OPA4187 C002_SBOS807.png
Figure 1. Offset Voltage Production Distribution
OPA187 OPA2187 OPA4187 C010_SBOS637.png
Figure 3. Offset Voltage vs Temperature
OPA187 OPA2187 OPA4187 C017_SBOS637.png
Figure 5. Offset Voltage vs Power Supply
OPA187 OPA2187 OPA4187 C201_SBOS701.png
Figure 7. Closed-Loop Gain vs Frequency
OPA187 OPA2187 OPA4187 C014_SBOS637.png
Figure 9. Input Bias Current vs Temperature
OPA187 OPA2187 OPA4187 C202_SBOS701.png
Figure 11. CMRR and PSRR vs Frequency
(Referred-to-Input)
OPA187 OPA2187 OPA4187 C012_SBOS637.png
Figure 13. PSRR vs Temperature
OPA187 OPA2187 OPA4187 C204_SBOS701.png
Figure 15. Input-Referred Voltage Noise Spectral Density vs Frequency (G = +101)
OPA187 OPA2187 OPA4187 C206_SBOS807.png
Figure 17. THD+N vs Output Amplitude
OPA187 OPA2187 OPA4187 C007_SBOS637.png
Figure 19. Quiescent Current vs Temperature
OPA187 OPA2187 OPA4187 C301_SBOS807.png
Figure 21. Open-Loop Output Impedance vs Frequency
OPA187 OPA2187 OPA4187 C208_SBOS701.png
Figure 23. No Phase Reversal
OPA187 OPA2187 OPA4187 C209_SBOS727.png
Figure 25. Negative Overload Recovery
OPA187 OPA2187 OPA4187 C212_SBOS701.png
Figure 27. Small-Signal Step Response
(100 mV)
OPA187 OPA2187 OPA4187 C214_SBOS701.png
Figure 29. Large-Signal Step Response
OPA187 OPA2187 OPA4187 C216_SBOS7016.png
Figure 31. Large-Signal Settling Time
(10-V Negative Step)
OPA187 OPA2187 OPA4187 C217_SBOS701.png
Figure 33. Maximum Output Voltage vs Frequency
OPA187 OPA2187 OPA4187 C219_SBOS701.png
Figure 35. EMIRR IN+ vs Frequency
OPA187 OPA2187 OPA4187 OPA187 Vos Drift.gif
Figure 2. Offset Voltage Drift Distribution
OPA187 OPA2187 OPA4187 C003_SBOS637.png
Figure 4. Offset Voltage vs Common-Mode Voltage
OPA187 OPA2187 OPA4187 C200_SBOS701.png
Figure 6. Open-Loop Gain and Phase vs Frequency
OPA187 OPA2187 OPA4187 C013_SBOS637.png
Figure 8. IB vs Common-Mode Voltage
OPA187 OPA2187 OPA4187 C009A_SBOS637.png
Figure 10. Output Voltage Swing vs Output Current
OPA187 OPA2187 OPA4187 C011_SBOS637.png
Figure 12. CMRR vs Temperature
OPA187 OPA2187 OPA4187 C203_SBOS701.png
Figure 14. 0.1-Hz to 10-Hz Noise
OPA187 OPA2187 OPA4187 C205_SBOS807.png
Figure 16. THD+N Ratio vs Frequency
OPA187 OPA2187 OPA4187 C004_SBOS637.png
Figure 18. Quiescent Current vs Supply Voltage
OPA187 OPA2187 OPA4187 C005_SBOS637.png
Figure 20. Open-Loop Gain vs Temperature
OPA187 OPA2187 OPA4187 C207_SBOS701.png
Figure 22. Small-Signal Overshoot vs
Capacitive Load (G = +1) (10-mV Output Step)
OPA187 OPA2187 OPA4187 C210_SBOS727.png
Figure 24. Positive Overload Recovery
OPA187 OPA2187 OPA4187 C211_SBOS701.png
Figure 26. Small-Signal Step Response
(100 mV)
OPA187 OPA2187 OPA4187 C213_SBOS701.png
Figure 28. Large-Signal Step Response
OPA187 OPA2187 OPA4187 C215_SBOS701.png
Figure 30. Large-Signal Settling Time
(10-V Positive Step)
OPA187 OPA2187 OPA4187 C008_SBOS637.png
Figure 32. Short-Circuit Current vs Temperature
OPA187 OPA2187 OPA4187 C218_SBOS701.png
Figure 34. Crosstalk vs Frequency