SBOS516G September   2010  – May 2020 OPA171 , OPA2171 , OPA4171

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Offset Voltage vs Common-Mode Voltage
      2.      Offset Voltage vs Power Supply
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin Functions: OPA171
    2.     Pin Functions: OPA2171
    3.     Pin Functions: OPA4171
  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: OPA171
    5. 6.5 Thermal Information: OPA2171
    6. 6.6 Thermal Information: OPA4171
    7. 6.7 Electrical Characteristics
    8. 6.8 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 Common-Mode Voltage Range
      3. 7.3.3 Phase-Reversal Protection
      4. 7.3.4 Capacitive Load and Stability
    4. 7.4 Device Functional Modes
      1. 7.4.1 Common-Mode Voltage Range
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Electrical Overstress
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Capacitive Load and Stability
      3. 8.2.3 Application Curve
  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 Related Links
    2. 11.2 Support Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

7.3.3 Phase-Reversal Protection

The OPAx171 family has an internal phase-reversal protection. Many operational amplifiers exhibit a phase reversal when the input is driven beyond its linear common-mode range. This condition is most often encountered in noninverting circuits when the input is driven beyond the specified common-mode voltage range, causing the output to reverse into the opposite rail. The input of the OPAx171 prevents phase reversal with excessive common-mode voltage. Instead, the output limits into the appropriate rail. This performance is shown in Figure 37.

OPA171 OPA2171 OPA4171 tc_no_phase_bos516.gifFigure 37. No Phase Reversal

Table 2. Typical Performance Range

PARAMETER MIN TYP MAX UNIT
Input common-mode voltage (V+) – 2 (V+) + 0.1 V
Offset voltage 7 mV
vs temperature 12 µV/°C
Common-mode rejection 65 dB
Open-loop gain 60 dB
GBW 0.7 MHz
Slew rate 0.7 V/µs
Noise at f = 1 kHz 30 nV/√Hz