SBOS724 September   2015 OPA1688

UNLESS OTHERWISE NOTED, this document contains PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Device Comparison Table
  6. Device Family Comparison Table
  7. Pin Configuration and Functions
  8. Specifications
    1. 8.1 Absolute Maximum Ratings
    2. 8.2 ESD Ratings
    3. 8.3 Recommended Operating Conditions
    4. 8.4 Thermal Information: OPA1688
    5. 8.5 Thermal Information: OPA1689
    6. 8.6 Electrical Characteristics
    7. 8.7 Typical Characteristics: Table of Graphs
    8. 8.8 Typical Characteristics
  9. Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 EMI Rejection
      2. 9.3.2 Phase-Reversal Protection
      3. 9.3.3 Capacitive Load and Stability
    4. 9.4 Device Functional Modes
      1. 9.4.1 Common-Mode Voltage Range
      2. 9.4.2 Electrical Overstress
      3. 9.4.3 Overload Recovery
  10. 10Applications and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
      3. 10.2.3 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Device Support
      1. 13.1.1 Development Support
        1. 13.1.1.1 TINA-TI (Free Software Download)
    2. 13.2 Documentation Support
      1. 13.2.1 Related Documentation
    3. 13.3 Related Links
    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

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

1 Features

  • THD+N, 50 mW, 32 Ω, 1 kHz, –109 dB
  • Wide Supply Range:
    • 4.5 V to 36 V, ±2.25 V to ±18 V
  • Low Offset Voltage: ±0.25 mV
  • Low Offset Drift: ±0.5 µV/°C
  • Gain Bandwidth: 10 MHz
  • Low Input Bias Current: ±10 pA
  • Low Quiescent Current: 1.6 mA per Amplifier
  • Low Noise: 8 nV/√Hz
  • EMI- and RFI-Filtered Inputs
  • Input Range Includes Negative Supply
  • Input Range Operates to Positive Supply
  • Rail-to-Rail Output
  • High Common-Mode Rejection: 120 dB
  • Industry-Standard Packages:
    • SOIC-8 and SOIC-14
  • microPackages:
    • Dual in WSON-8, Quad in VQFN-16

2 Applications

  • Headphone Driver
  • Analog and Digital Mixers
  • Audio Effects Processors
  • Transducer Amplifiers
  • Musical Instruments
  • A/V Receivers
  • DVD and Blu-Ray™ Players
  • Car Audio Systems

3 Description

The OPA1688 and OPA1689 are a family of SoundPlus™ 36-V, single-supply, low-noise operational amplifiers capable of operating on supplies ranging from 4.5 V (±2.25 V) to 36 V (±18 V). This latest addition of high-voltage audio operational amplifiers, in conjunction with the OPA16xx devices provide a family of bandwidth, noise, and power options to meet the needs of a wide variety of applications. The OPA168x are available in micropackages, and offer low offset, drift, and quiescent current. These devices also offer wide bandwidth, fast slew rate, and high output current drive capability. The dual and quad versions all have identical specifications for maximum design flexibility.

Unlike most op amps that are specified at only one supply voltage, the OPA168x family is specified from 4.5 V to 36 V. Input signals beyond the supply rails do not cause phase reversal. The input can operate 100 mV below the negative rail and within 2 V of the top rail during normal operation. Note that these devices can operate with full rail-to-rail input 100 mV beyond the top rail, but with reduced performance within 2 V of the top rail.

The OPA168x series of op amps are specified from –40°C to 85°C.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
OPA1688 SOIC (8) 4.90 mm × 3.91 mm
WSON (8) 3.00 mm × 3.00 mm
OPA1689(2) SOIC (14) 8.65 mm × 3.91 mm
VQFN (16) 3.50 mm × 3.50 mm
  1. For all available packages, see the orderable addendum at the end of the datasheet.
  2. Product-preview device.

Headphone Amplifier Circuit Configuration

OPA1688 OPA1689 ai_headphone_amp_sbos724.gif

Superior THD Performance
(f = 1 kHz, BW = 80 kHz, VS = ±5 V)

OPA1688 OPA1689 C029_SBOS724.png