Overview
The OPA1611AID is a high-performance, bipolar-input operational amplifier produced by Texas Instruments. This device is part of the OPA161x series, known for its superior sound quality, ultralow noise, and ultralow distortion. The OPA1611AID is available in a single-channel configuration and is designed to operate over a wide supply range, making it versatile for various audio and precision applications.
The amplifier features a rail-to-rail output swing, high slew rate, and wide bandwidth, which enhance its dynamic range and output drive capability. It is unity-gain stable and offers excellent dynamic behavior across different load conditions.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | SOIC-8 | |
| Pin Count | 8 | |
| Operating Temperature Range | -40 to 85 | °C |
| Supply Voltage Range | ±2.25 V to ±18 V | |
| Quiescent Current per Channel | 3.6 mA | |
| Input Voltage Noise Density | 1.1 nV/√Hz at 1 kHz | |
| Distortion | 0.000015% at 1 kHz | |
| Slew Rate | 27 V/μs | |
| Bandwidth | 40 MHz (G = +1) | |
| Open-Loop Gain | 130 dB | |
| Output Drive Capability | ±30 mA |
Key Features
- Superior Sound Quality: Achieves very low noise and distortion, making it ideal for high-fidelity audio applications.
- Ultralow Noise: 1.1 nV/√Hz at 1 kHz.
- Ultralow Distortion: 0.000015% at 1 kHz.
- High Slew Rate: 27 V/μs.
- Wide Bandwidth: 40 MHz (G = +1).
- High Open-Loop Gain: 130 dB.
- Unity Gain Stable: Ensures stability in various gain configurations.
- Low Quiescent Current: 3.6 mA per channel.
- Rail-to-Rail Output: Offers output swing to within 600 mV with a 2-kΩ load.
- Wide Supply Range: ±2.25 V to ±18 V.
- Single and Dual Versions Available: The OPA1611 is single-channel, while the OPA1612 is dual-channel.
Applications
- Professional Audio Equipment: Ideal for high-fidelity audio amplifiers, mixers, and other professional audio gear.
- Microphone Preamplifiers: Suitable for low-noise, high-gain preamplification of microphone signals.
- Precision Instrumentation: Used in precision measurement and instrumentation due to its low noise and high accuracy.
- Audio Processing and Effects: Can be used in audio processing units, effects pedals, and other audio signal processing equipment.
Q & A
- What is the input voltage noise density of the OPA1611AID?
1.1 nV/√Hz at 1 kHz.
- What is the distortion level of the OPA1611AID at 1 kHz?
0.000015% at 1 kHz.
- What is the slew rate of the OPA1611AID?
27 V/μs.
- What is the bandwidth of the OPA1611AID at a gain of +1?
40 MHz.
- What is the open-loop gain of the OPA1611AID?
130 dB.
- What is the output drive capability of the OPA1611AID?
±30 mA.
- What is the operating temperature range of the OPA1611AID?
-40°C to 85°C.
- What is the quiescent current per channel of the OPA1611AID?
3.6 mA.
- Is the OPA1611AID unity-gain stable?
- What are the typical applications of the OPA1611AID?
Professional audio equipment, microphone preamplifiers, precision instrumentation, and audio processing and effects.
