Overview
The OPA1642AIDGKT is a dual-channel operational amplifier from Texas Instruments, part of the OPA164x family. These amplifiers are designed for high-performance audio applications, featuring a JFET-input stage and a rail-to-rail output stage. This combination provides ultra-low noise, low distortion, and high overall performance. The OPA1642 is particularly suited for professional audio equipment, analog and digital mixing consoles, broadcast studio equipment, high-end A/V receivers, and high-end Blu-ray players.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Slew Rate | 20 | V/μs |
| Unity Gain Stability | Yes | - |
| No Phase Reversal | Yes | - |
| Quiescent Current per Channel | 1.8 | mA |
| Rail-to-Rail Output Swing | Yes | - |
| Supply Voltage Range | ±2.25 V to ±18 V | V |
| Input Voltage Noise Density | 5.1 nV/√Hz | nV/√Hz |
| Total Harmonic Distortion + Noise (THD+N) | 0.00005% | % |
| Input Bias Current | 2 pA | pA |
| Operating Temperature Range | -40°C to +85°C | °C |
| Package Type | MSOP-8 | - |
Key Features
- Ultra-Low Distortion and Noise: The OPA1642 features a JFET-input stage that provides 5.1 nV/√Hz noise and 0.00005% THD+N, making it ideal for high-fidelity audio applications.
- Rail-to-Rail Output Swing: This allows for increased headroom and better performance in audio circuits.
- Wide Supply Voltage Range: The device operates over a wide supply voltage range of ±2.25 V to ±18 V.
- No Phase Reversal: Internal phase-reversal protection prevents the output from reversing into the opposite rail when the input is driven beyond the linear common-mode range.
- Low Quiescent Current: Each channel consumes only 1.8 mA of quiescent current.
- High Slew Rate: A slew rate of 20 V/μs ensures fast response times.
- Independent Channels: The dual version features completely independent circuitry for lowest crosstalk and freedom from interactions between channels.
Applications
- Professional Audio Equipment: Suitable for use in professional audio mixers, consoles, and other high-end audio gear.
- Analog and Digital Mixing Consoles: Ideal for applications requiring low noise and high fidelity.
- Broadcast Studio Equipment: Used in broadcast studios for high-quality audio processing.
- High-End A/V Receivers: Enhances audio quality in home theater systems.
- High-End Blu-ray Players: Provides superior audio performance in Blu-ray players.
Q & A
- What is the slew rate of the OPA1642?
The slew rate of the OPA1642 is 20 V/μs.
- Does the OPA1642 have phase reversal protection?
Yes, the OPA1642 has internal phase-reversal protection.
- What is the quiescent current per channel of the OPA1642?
The quiescent current per channel is 1.8 mA.
- What is the supply voltage range of the OPA1642?
The supply voltage range is ±2.25 V to ±18 V.
- What is the input voltage noise density of the OPA1642?
The input voltage noise density is 5.1 nV/√Hz.
- What is the THD+N of the OPA1642?
The THD+N is 0.00005%.
- What is the operating temperature range of the OPA1642?
The operating temperature range is -40°C to +85°C.
- What package types are available for the OPA1642?
The OPA1642 is available in MSOP-8 packages among others.
- Is the OPA1642 suitable for professional audio applications?
Yes, it is highly suitable for professional audio applications due to its low noise and distortion characteristics.
- Does the OPA1642 have rail-to-rail output swing?
Yes, the OPA1642 features rail-to-rail output swing.
