OPA1678
Features
- 1 Low noise: 4.5 n V/√Hz at 1 k Hz
- Low distortion: 0.0001% at 1 k Hz
- High open-loop gain: 114 d B
- High mon-mode rejection: 110 d B
- Low quiescent current:
- 2 m A per channel
- Low input bias current: 10 p A (typical)
- Slew rate: 9 V/μs
- Wide gain bandwidth: 16 MHz (G = 1)
- Unity-gain stable
- Rail-to-rail output
- Wide supply range:
- ±2.25 V to ±18 V, or 4.5 V to 36 V
- Dual-channel and quad-channel versions
- Small package sizes:
- Dual-channel: SO-8, MSOP-8, SON-8
- Quad-channel: SO-14, TSSOP-14, QFN-16
2 Applications
- Analog signal conditioning
- Analog and digital mixers
- Audio effects pedals
- A/V receivers
- Car audio systems
3 Description
The OPA1678 (dual-channel) and OPA1679 (quadchannel) operational amplifiers offer higher systemlevel performance over legacy op amps monly used in audio circuitry. The OPA167x amplifiers achieve a low 4.5-n V/√Hz noise density and low distortion of 0.0001% at 1 k Hz, which improves audio signal fidelity. They also offer...
