SBOS727B November 2015  – May 2016 OPA1622

PRODUCTION DATA. 

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  6. Specifications
    1. 6.1Absolute Maximum Ratings
    2. 6.2ESD Ratings
    3. 6.3Recommended Operating Conditions
    4. 6.4Thermal Information
    5. 6.5 Electrical Characteristics:
    6. 6.6Typical Characteristics
  7. Detailed Description
    1. 7.1Overview
    2. 7.2Functional Block Diagram
    3. 7.3Feature Description
      1. 7.3.1Power Dissipation
      2. 7.3.2Thermal Shutdown
      3. 7.3.3Enable Pin
      4. 7.3.4Ground Pin
      5. 7.3.5Electrical Overstress
      6. 7.3.6Input Protection
    4. 7.4Device Functional Modes
      1. 7.4.1Shutdown Mode
      2. 7.4.2Output Transients During Power Up and Power Down
  8. Application and Implementation
    1. 8.1Application Information
      1. 8.1.1Noise Performance
        1. 8.1.1.1Noise Calculations
        2. 8.1.1.2Application Curve
        3. 8.1.1.3Basic Noise Calculations
      2. 8.1.2Total Harmonic Distortion Measurements
    2. 8.2Typical Application
      1. 8.2.1Design Requirements
      2. 8.2.2Detailed Design Procedure
      3. 8.2.3Application Curves
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1Layout Guidelines
    2. 10.2Layout Example
  11. 11Device and Documentation Support
    1. 11.1Device Support
      1. 11.1.1Development Support
        1. 11.1.1.1TINA-TI (Free Software Download)
        2. 11.1.1.2TI Precision Designs
    2. 11.2Documentation Support
      1. 11.2.1Related Documentation
    3. 11.3Community Resources
    4. 11.4Trademarks
    5. 11.5Electrostatic Discharge Caution
    6. 11.6Glossary
  12. 12Mechanical, Packaging, and Orderable Information

1 Features

  • High-Fidelity Sound Quality
  • Ultralow Noise: 2.8 nV/√Hz at 1 kHz
  • Ultralow Total Harmonic Distortion + Noise:
    –119 dB THD+N (142 mW/Ch into 32 Ω/Ch)
  • Wide Gain Bandwidth Product:
    32 MHz (G = +1000)
  • High Slew Rate: 10 V/μs
  • High Capacitive-Load Drive Capability: > 600 pF
  • High Open-Loop Gain: 136 dB (600-Ω Load)
  • Low Quiescent Current: 2.6 mA per Channel
  • Low-Power Shutdown Mode With Reduced Pop and Click Noise: 5 μA per Channel
  • Short-Circuit Protection
  • Wide Supply Range: ±2 V to ±18 V
  • Available in small VSON-10 µPackage

2 Applications

  • High-Fidelity (HiFi) Headphone Drivers
  • Professional Audio Equipment
  • Analog and Digital Mixing Consoles
  • Audio Test and Measurement
  • High-End Blu-ray™ Players
  • High-End Audio and Video (A/V) Receivers

3 Description

The OPA1622, dual, bipolar-input, SoundPlus™ audio operational amplifier achieves a very low,
2.8-nV/√Hz noise density with an ultralow THD+N of –119.2 dB at 1 kHz and drives a 32-Ω load at 100-mW output power. The OPA1622 offers extremely-high ac PSRR and CMRR specifications that eliminate noise from power supplies, making the OPA1622 ideal for use in portable-audio applications. This device also has a high output-drive capability of +145 mA per –130 mA.

The OPA1622 operates over a very wide supply range of ±2 V to ±18 V, on only 2.6 mA of supply current per channel. The OPA1622 op amp is unity-gain stable and provides excellent dynamic behavior over a wide range of load conditions. The OPA1622 includes a shutdown mode, allowing the amplifiers to be switched from normal operation to a standby current that is typically less than 5 µA. This shutdown feature is specifically designed to eliminate click and pop noise when transitioning into or out of shutdown mode.

The OPA1622 features a unique internal layout for lowest crosstalk, and freedom from interactions between channels, even when overdriven or overloaded. This device is specified from –40°C to +125°C.

Device Information(1)

PART NUMBERPACKAGEBODY SIZE (NOM)
OPA1622VSON (10)3.00 mm × 3.00 mm
  1. For all available packages, see the package option addendum at the end of the datasheet.

OPA1622 in a High-Fidelity Headphone Driver Application

OPA1622 ai_frontpage_sbos727.gif

FFT: 1 kHz, 32-Ω Load, 50 mW

OPA1622 ai_C315_SBOS727.png