SBOS079B March   1999  – June 2015 OPA2277 , OPA277 , OPA4277

PRODUCTION DATA.  

  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 OPA277
    5. 6.5 Thermal Information for OPA2277
    6. 6.6 Thermal Information for OPA4277
    7. 6.7 Electrical Characteristics for OPAx277P, OPAx277U, and OPAx277xA
    8. 6.8 Electrical Characteristics for OPAx277AIDRM
    9. 6.9 Typical Characteristics
  7. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Operating Voltage
      2. 7.3.2 Offset Voltage Adjustment
      3. 7.3.3 Input Protection
      4. 7.3.4 Input Bias Current Cancellation
      5. 7.3.5 EMI Rejection Ratio (EMIRR)
        1. 7.3.5.1 EMIRR IN+ Test Configuration
    4. 7.4 Device Functional Modes
  8. Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Second-Order Lowpass Filter
        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 Load Cell Amplifier
      3. 8.2.3 Thermocouple Low-Offset, Low-Drift Loop Measurement With Diode Cold Junction Compensation
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 DFN Package
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Development Support
        1. 11.1.1.1 WEBENCH Filter Designer Tool
        2. 11.1.1.2 TINA-TI (Free Software Download)
        3. 11.1.1.3 TI Precision Designs
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
      2. 11.2.2 Related Links
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

封装选项

请参考 PDF 数据表获取器件具体的封装图。

机械数据 (封装 | 引脚)
  • D|8
  • P|8
  • DRM|8
订购信息

1 Features

  • Ultralow Offset Voltage: 10 μV
  • Ultralow Drift: ±0.1 μV/°C
  • High Open-Loop Gain: 134 dB
  • High Common-Mode Rejection: 140 dB
  • High Power Supply Rejection: 130 dB
  • Low Bias Current: 1-nA maximum
  • Wide Supply Range: ±2 V to ±18 V
  • Low Quiescent Current: 800 μA/amplifier
  • Single, Dual, and Quad Versions
  • Replaces OP-07, OP-77, and OP-177

2 Applications

  • Transducer Amplifiers
  • Bridge Amplifiers
  • Temperature Measurements
  • Strain Gage Amplifiers
  • Precision Integrators
  • Battery-Powered Instruments
  • Test Equipment

3 Description

The OPAx277 series precision operational amplifiers replace the industry standard OP-177. They offer improved noise, wider output voltage swing, and are twice as fast with half the quiescent current. Features include ultralow offset voltage and drift, low bias current, high common-mode rejection, and high power supply rejection. Single, dual, and quad versions have identical specifications, for maximum design flexibility.

OPAx277 series operational amplifiers operate from ±2-V to ±18-V supplies with excellent performance. Unlike most operational amplifiers which are specified at only one supply voltage, the OPAx277 series is specified for real-world applications; a single limit applies over the ±5-V to ±15-V supply range. High performance is maintained as the amplifiers swing to their specified limits. Because the initial offset voltage (±20 μV maximum) is so low, user adjustment is usually not required. However, the single version (OPA277) provides external trim pins for special applications.

OPA277 operational amplifiers are easy to use and free from phase inversion and the overload problems found in some other operational amplifiers. They are stable in unity gain and provide excellent dynamic behavior over a wide range of load conditions. Dual and quad versions feature completely independent circuitry for lowest crosstalk and freedom from interaction, even when overdriven or overloaded.

Device Information(1)

PART NUMBERPACKAGEBODY SIZE (NOM)
OPA277
OPA2277
VSON (8)4.00 mm × 4.00 mm
SOIC (8)3.91 mm × 4.90 mm
PDIP (8)6.35 mm × 9.81 mm
OPA4277SOIC (14)3.91 mm × 8.65 mm
PDIP (14)6.35 mm × 19.30 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

0.1 Hz to 10 Hz Noise

OPA277 OPA2277 OPA4277 sbos079_typchar_4.gif

4 Revision History

Changes from A Revision (April 2005) to B Revision

  • Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section.Go