OPA1644 AUDIO OPERATIONAL AMPLIFIERS
General Description:
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
- 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 |
JFET-Input AUDIO OPERATIONAL AMPLIFIERS, Package type -8-SOIC pin |

