SBOS303D June   2004  – December 2016 OPA820

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics: VS = ±5 V
    6. 7.6 Electrical Characteristics: VS = 5 V
    7. 7.7 Typical Characteristics
      1. 7.7.1 ±5-V Supply Voltage
      2. 7.7.2 5-V Supply Voltage
  8. 8 Parameter Measurement Information
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Feature Description
      1. 9.2.1 Input and ESD Protection
      2. 9.2.2 Bandwidth versus Gain
      3. 9.2.3 Output Drive Capability
      4. 9.2.4 Driving Capacitive Loads
      5. 9.2.5 Distortion Performance
      6. 9.2.6 Noise Performance
      7. 9.2.7 DC Offset Control
      8. 9.2.8 Thermal Analysis
    3. 9.3 Device Functional Modes
      1. 9.3.1 Wideband Noninverting Operation
      2. 9.3.2 Wideband Inverting Operation
      3. 9.3.3 Wideband Single-Supply Operation
  10. 10Application and Implementation
    1. 10.1 Application Information
      1. 10.1.1 Optimizing Resistor Values
    2. 10.2 Typical Applications
      1. 10.2.1 Active Filter Design
        1. 10.2.1.1 Design Requirements
        2. 10.2.1.2 Detailed Design Procedure
          1. 10.2.1.2.1 High-Q Bandpass Filter Design Procedure
          2. 10.2.1.2.2 Low-Pass Butterworth Filter Design Procedure
        3. 10.2.1.3 Application Curves
      2. 10.2.2 Buffering High-Performance ADCs
      3. 10.2.3 Video Line Driving
      4. 10.2.4 Single Differential Op Amp
      5. 10.2.5 Triple Differencing Op Amp (Instrumentation Topology)
      6. 10.2.6 DAC Transimpedance Amplifier
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
      1. 12.1.1 Minimizing Parasitic Capacitance
      2. 12.1.2 Minimizing Distance from Power Supply to Decoupling Capacitors
      3. 12.1.3 Selecting and Placing External Components
      4. 12.1.4 Connecting Other Wideband Devices
      5. 12.1.5 Socketing
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Device Support
      1. 13.1.1 Design-In Tools
        1. 13.1.1.1 Demonstration Fixtures
        2. 13.1.1.2 Macromodels and Applications Support
      2. 13.1.2 Development Support
    2. 13.2 Documentation Support
      1. 13.2.1 Related Documentation
    3. 13.3 Receiving Notification of Documentation Updates
    4. 13.4 Community Resources
    5. 13.5 Trademarks
    6. 13.6 Electrostatic Discharge Caution
    7. 13.7 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • D|8
  • DBV|5
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • High Bandwidth (240 MHz, G = 2)
  • High-Output Current (±110 mA)
  • Low-Input Noise (2.5 nV/√Hz)
  • Low-Supply Current (5.6 mA)
  • Flexible Supply Voltage:
    • Dual ±2.5 V to ±6 V
    • Single 5 V to 12 V
  • Excellent DC Accuracy:
    • Maximum 25°C Input Offset Voltage = ±750 µV
    • Maximum 25°C Input Offset Current = ±400 nA

2 Applications

  • Low-Cost Video Line Drivers
  • ADC Preamplifiers
  • Active Filters
  • Low-Noise Integrators
  • Portable Test Equipment
  • Optical Channel Amplifiers
  • Low-Power, Baseband Amplifiers
  • CCD Imaging Channel Amplifiers
  • OPA650 and OPA620 Upgrade

3 Description

The OPA820 device provides a wideband, unity-gain stable, voltage-feedback amplifier with a very-low input-noise voltage and high-output current using a low 5.6-mA supply current. At unity-gain, the OPA820 device gives more than 800-MHz bandwidth with less than 1-dB peaking. The OPA820 device complements this high-speed operation with excellent DC precision in a low-power device. A worst-case input-offset voltage of ±750 µV and an offset current of ±400 nA provide excellent absolute DC precision for pulse amplifier applications.

Minimal input and output voltage-swing headroom allow the OPA820 device to operate on a single 5-V supply with more than 2-VPP output swing. While not a rail-to-rail (RR) output, this swing supports most emerging analog-to-digital converter (ADC) input ranges with lower power and noise than typical RR output op amps.

Exceptionally low dG/dP (0.01% or 0.03°) supports low-cost composite-video line-driver applications. Existing designs can use the industry-standard pinout, 8-pin SOIC package while emerging high-density portable applications can use the 5-pin SOT-23. Offering the lowest thermal impedance of the industry in a SOT package, along with full specification over both the commercial and industrial temperature ranges, provides solid performance over a wide temperature range.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
OPA820 SOIC (8) 4.90 mm × 3.91 mm
SOT-23 (5) 2.90 mm × 1.60 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

AC-Coupled, 14-Bit ADS850 Interface

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