Overview
The Texas Instruments OPA1679IDR is a quad-channel, low-distortion, low-noise operational amplifier designed for high-performance audio applications. This device is part of the OPA167x family, which includes single-channel (OPA1677), dual-channel (OPA1678), and quad-channel (OPA1679) configurations. The OPA1679IDR is known for its exceptional audio signal fidelity, making it suitable for a wide range of audio circuitry.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Noise Density | 4.5 | nV/√Hz at 1 kHz |
| Distortion | 0.0001% | at 1 kHz |
| Open-Loop Gain | 114 | dB |
| Common-Mode Rejection Ratio | 110 | dB |
| Supply Voltage Range | ±2.25 V to ±18 V (or 4.5 V to 36 V) | V |
| Quiescent Current per Channel | 2 mA | mA |
| Output Voltage Swing | (V–) + 0.8 V to (V+) – 0.8 V | V |
| Gain-Bandwidth Product | 16 | MHz |
| Slew Rate | 9 | V/µs |
| Input Offset Voltage | ±0.5 mV | mV |
| Input Bias Current | ±10 pA | pA |
Key Features
- Low noise: 4.5 nV/√Hz at 1 kHz, ensuring high signal fidelity.
- Low distortion: 0.0001% at 1 kHz, making it ideal for audio applications.
- High open-loop gain: 114 dB, providing excellent dynamic behavior.
- High common-mode rejection ratio: 110 dB, enhancing noise rejection.
- Rail-to-rail output swing within 800 mV of the supply rails with a 2-kΩ load, maximizing dynamic range.
- Wide supply voltage range: ±2.25 V to ±18 V (or 4.5 V to 36 V), accommodating various power-supply constraints.
- Low quiescent current: 2 mA per channel, suitable for power-efficient designs.
- Unity-gain stable and excellent performance over a wide range of load conditions.
Applications
The OPA1679IDR is designed for high-performance audio applications, including professional audio equipment, home audio systems, and automotive audio systems. It is also suitable for use in audio processing, mixing consoles, and other audio signal processing circuits where low noise and low distortion are critical.
Q & A
- What is the noise density of the OPA1679IDR? The noise density of the OPA1679IDR is 4.5 nV/√Hz at 1 kHz.
- What is the distortion level of the OPA1679IDR at 1 kHz? The distortion level is 0.0001% at 1 kHz.
- What is the open-loop gain of the OPA1679IDR? The open-loop gain is 114 dB.
- What is the common-mode rejection ratio of the OPA1679IDR? The common-mode rejection ratio is 110 dB.
- What is the supply voltage range for the OPA1679IDR? The supply voltage range is ±2.25 V to ±18 V (or 4.5 V to 36 V).
- How much quiescent current does the OPA1679IDR consume per channel? The quiescent current is 2 mA per channel.
- Is the OPA1679IDR unity-gain stable? Yes, the OPA1679IDR is unity-gain stable.
- What is the gain-bandwidth product of the OPA1679IDR? The gain-bandwidth product is 16 MHz.
- What is the slew rate of the OPA1679IDR? The slew rate is 9 V/µs.
- What are some typical applications of the OPA1679IDR? Typical applications include professional audio equipment, home audio systems, automotive audio systems, and other audio signal processing circuits.
