SBOSAI7B November   2023  – July 2024 OPA2891 , OPA891

PRODUCTION DATA  

  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 - OPA891
    5. 5.5 Thermal Information - OPA2891
    6. 5.6 Electrical Characteristics - RL = 150Ω
    7. 5.7 Electrical Characteristics - RL = 1kΩ
    8. 5.8 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagrams
    3. 6.3 Feature Description
      1. 6.3.1 Offset Nulling
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Driving a Capacitive Load
      2. 7.1.2 Low-Pass Filter Configurations
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Selection of Multiplexer
        2. 7.2.2.2 Signal Source
        3. 7.2.2.3 Driving Amplifier
        4. 7.2.2.4 Driving Amplifier Bandwidth Restriction
      3. 7.2.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
        1. 7.4.1.1 General PowerPAD™ Integrated Circuit Package Design Considerations
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Documentation Support
      1. 8.1.1 Related Documentation
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

4 Pin Configuration and Functions

Figure 4-1 OPA891: D Package, 8-Pin SOIC, or DGN Package, 8-pin HVSSOP (Top View)
Table 4-1 Pin Functions: OPA891
PIN TYPE DESCRIPTION
NAME NO.
IN– 2 Input Inverting input
IN+ 3 Input Noninverting input
NC 5 — No connection
NULL 1, 8 Input Voltage offset adjust
OUT 6 Output Output of amplifier
VCC– 4 — Negative power supply
VCC+ 7 — Positive power supply
Thermal Pad Pad — Thermal pad. DGN (HVSSOP) package only. For the best thermal performance, connect this pad to a large copper plane. The thermal pad can be connected to any pin on the device, or any other potential on the board, as long as the voltage on the thermal pad remains between VCC+ and VCC–.
Figure 4-2 OPA2891: D Package, 8-Pin SOIC, or DGN Package, 8-pin HVSSOP (Top View)
Table 4-2 Pin Functions: OPA2891
PIN TYPE DESCRIPTION
NAME NO.
1IN– 2 Input Channel 1 inverting input
1IN+ 3 Input Channel 1 noninverting input
1OUT 1 Output Channel 1 output
2IN– 6 Input Channel 2 inverting input
2IN+ 5 Input Channel 2 noninverting input
2OUT 7 Output Channel 2 output
VCC– 4 — Negative power supply
VCC+ 8 — Positive power supply
Thermal Pad Pad — Thermal pad. DGN (HVSSOP) package only. For the best thermal performance, connect this pad to a large copper plane. The thermal pad can be connected to any pin on the device, or any other potential on the board, as long as the voltage on the thermal pad remains between VCC+ and VCC–.