Packaging information
| Package | Pins WSON (DRG) | 8 |
| Operating temperature range (°C) -40 to 85 |
| Package qty | Carrier 3,000 | LARGE T&R |
Features for the OPA1678
- Low noise: 4.5 nV/√Hz at 1 kHz
- Low distortion: 0.0001% at 1 kHz
- High open-loop gain: 114 dB
- High common-mode rejection: 110 dB
- Low quiescent current:
- 2 mA per channel
- Low input bias current: 10 pA (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
- Single, dual, and quad-channel versions
- Available packages:
- Single: SOIC-8, SOT-23
- Dual: SOIC-8, small SON-8, VSSOP-8
- Quad: Small QFN-16, SO-14, TSSOP-14
- Temperature range: –40°C to +85°C
Description for the OPA1678
The single-channel OPA1677, dual-channel OPA1678, and quad-channel OPA1679 (OPA167x) op amps offer higher system-level performance over legacy op amps commonly used in audio circuitry.
The OPA167x amplifiers achieve a low 4.5-nV/√Hz noise density and low distortion of 0.0001% at 1 kHz, which improves audio signal fidelity. These devices also offer rail-to-rail output swing to within 800 mV with a 2-kΩ load, which increases headroom and maximizes dynamic range.
To accommodate the power-supply constraints of many types of audio products, the OPA167x operate over a very-wide supply range of ±2.25 V to ±18 V (or 4.5 V to 36 V) on only 2 mA of supply current. These op amps are unity-gain stable and have excellent dynamic behavior over a wide range of load conditions, allowing the OPA167x to be used in many audio circuits.
The OPA167x amplifiers use completely independent internal circuitry for lowest crosstalk and freedom from interactions between channels, even when overdriven or overloaded.