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NPI - Texas Instruments - OPA1644 Audio Operational Amplifiers

VERSION 8  Click to view document history
Created on: Jul 14, 2010 4:00 AM by tech4 - Last Modified:  Jan 14, 2012 7:17 PM by tech4

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OPA1644 AUDIO OPERATIONAL AMPLIFIERS

 

 

General Description:

 

8-SOIC.jpg

 

The OPA1641AID. (single), OPA1642 (dual), and OPA1644 (quad) series are JFET-input, ultralow distortion, low-noise operational amplifiers fully specified for audio applications. The OPA1641AID., OPA1642AID., and OPA1644 rail-to-rail output swing allows increased headroom, making these devices ideal for use in any audio circuit. Features include 5. 1nV/√Hz noise, low THD+N (0.00005%), a low input bias current of 2pA, and low quiescent current of 1.8mA per channel. These devices operate over a very wide supply voltage range of ±2.25V to ±18V. The OPA1641AID., OPA1642AID., and OPA1644 series of op amps are unity-gain stable and provide excellent dynamic behavior over a wide range of load conditions.

 

Features:

 

  • Superior Sound Quality
  • True Jfet Input OP AMP With Low Input Bias Current
  • Low Noise: 5.1nV/√Hz at 1kHz
  • Ultralow Distortion: 0.00005% at 1kHz
  • High Slew Rate: 20V/ms
  • Unity Gain Stable
  • No Phase Revarsal
  • Block Diagram.jpg
  • Low Quiscent Current: 1.8mA per Channel
  • Rail-To-Rail Output
  • Wide Supply Range: ±2.25V to ±18V
  • Single, Dual, And Quad Version
  • Available
  • 20-Pin 4mm × 4mm × 0.75mm QFN Package

 

Applications:

 

  • Professional Audio Equipment
  • Analog And Digital Mixing Consol
  • Broadcast Studio Equipment
  • High-End A/V Recievers
  • High-End BLU-Ray™ Players

 

Related Product Information:

 

Part No
Description

OPA1641AID

JFET-Input AUDIO OPERATIONAL AMPLIFIERS, Package type -8-SOIC pin

OPA1642AID

JFET-Input AUDIO OPERATIONAL AMPLIFIERS, Package type -8-SOIC pin

OPA1644AID

JFET-Input AUDIO OPERATIONAL AMPLIFIERS, Package type -8-SOIC pin

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