Overview
The OPA1611AIDR, produced by Texas Instruments, is a high-performance, bipolar-input audio operational amplifier. This device is part of the OPA1611 series, known for its superior sound quality, ultralow noise, and ultralow distortion. The OPA1611AIDR is particularly suited for professional audio equipment and other applications requiring high fidelity and low noise.
It operates over a wide supply range of ±2.25 V to ±18 V, making it versatile for various power supply configurations. The device is unity-gain stable and offers a high slew rate of 27 V/μs, along with a wide bandwidth of 40 MHz at a gain of +1. This ensures excellent dynamic behavior and high output drive capability.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VS) | ±2.25 | - | ±18 | V |
| Input Voltage Range | (V–) + 2 | - | (V+) – 2 | V |
| Input Bias Current (IB) | ±60 | - | ±250 | nA |
| Input Offset Current (IOS) | ±25 | - | ±175 | nA |
| Common-Mode Rejection Ratio (CMRR) | 110 | - | 120 | dB |
| Open-Loop Gain (AOL) | 114 | - | 130 | dB |
| Slew Rate | - | 27 | - | V/μs |
| Bandwidth (G = +1) | - | 40 | - | MHz |
| Output Current | - | ±30 | - | mA |
| Operating Temperature Range | -55 | - | 125 | °C |
| Quiescent Current per Channel | - | 3.6 | - | mA |
Key Features
- Superior Sound Quality: Ultralow noise density of 1.1 nV/√Hz at 1 kHz and ultralow distortion of 0.000015% at 1 kHz.
- High Slew Rate: 27 V/μs, ensuring fast response times.
- Wide Bandwidth: 40 MHz at a gain of +1.
- High Open-Loop Gain: 130 dB.
- Rail-to-Rail Output Swing: Within 600 mV of the supply rails with a 2-kΩ load.
- Wide Supply Range: ±2.25 V to ±18 V.
- Low Quiescent Current: 3.6 mA per channel.
- Unity-Gain Stable: Stable in unity-gain configurations.
- High Output Drive Capability: ±30 mA output current.
Applications
- Professional Audio Equipment: Ideal for high-fidelity audio applications requiring low noise and distortion.
- Microphone Preamplifiers: Suitable for preamplifying low-level audio signals.
- Audio Mixing Consoles: Used in audio mixing and processing equipment.
- High-End Consumer Audio: Employed in high-quality home audio systems.
- Studio Equipment: Used in professional recording studios for its superior sound quality.
Q & A
- What is the typical noise density of the OPA1611AIDR?
The typical noise density is 1.1 nV/√Hz at 1 kHz.
- What is the distortion level of the OPA1611AIDR at 1 kHz?
The distortion level is 0.000015% at 1 kHz.
- What is the slew rate of the OPA1611AIDR?
The slew rate is 27 V/μs.
- What is the bandwidth of the OPA1611AIDR at a gain of +1?
The bandwidth is 40 MHz at a gain of +1.
- What is the open-loop gain of the OPA1611AIDR?
The open-loop gain is 130 dB.
- What is the output current capability of the OPA1611AIDR?
The output current capability is ±30 mA.
- What is the operating temperature range of the OPA1611AIDR?
The operating temperature range is –55°C to 125°C.
- What is the quiescent current per channel of the OPA1611AIDR?
The quiescent current per channel is 3.6 mA.
- Is the OPA1611AIDR unity-gain stable?
Yes, the OPA1611AIDR is unity-gain stable.
- What are some common applications of the OPA1611AIDR?
Common applications include professional audio equipment, microphone preamplifiers, audio mixing consoles, high-end consumer audio, and studio equipment.
