Texas Instruments INA1620 Audio Operational Amplifier
Texas Instruments INA1620 Audio Operational Amplifier integrates four precision-matched thin-film resistor pairs and EMI filtering on-chip with a low-distortion, high output current, dual audio operational amplifier. The amplifier achieves a very low, 2.8nV/√Hz noise density with an ultra-low THD+N of –119.2dB at 1kHz and drives a 32Ω load at 150mW output power. The integrated thin-film resistors are matched to 0.004% and can be used to create a large number of very high-performance audio circuits.
The INA1620 operates over a very wide supply range of ±2V to ±18V on only 2.6mA of supply current per channel. The INA1620 also has a shutdown mode, allowing the amplifiers to be switched from normal operation to a standby current that is typically less than 5µA. Shutdown mode is specifically designed to eliminate click-and-pop noise when transitioning into or out of shutdown mode.
Features
- High-quality thin-film resistors matched to 0.004% (Typical)
- Integrated EMI filters
- Ultra-low Noise: 2.8nV/√Hz at 1kHz
- Ultra-low total harmonic distortion + noise
- –119dB THD+N (142mW/Ch Into 32Ω/Ch)
- Wide gain-bandwidth product
- 32MHz (G = +1000)
- High slew rate of 10V/µs
- > 600pF High capacitive-load drive capability
- 136dB (600Ω Load) High open-loop gain
- Low quiescent current of 2.6mA per channel
- Low-power shutdown mode with reduced pop-and-click noise of 5µA per channel
- Short-circuit protection
- ±2V to ±18V Wide supply range
- Available in a small 24-pin WQFN package
Applications
- High-Fidelity (HiFi) headphone drivers
- Professional audio equipment
- Analog and digital mixing consoles
- Audio test and measurement
Associated Development Tool
Texas Instruments INA1620EVM Amplifier Evaluation Module (EVM)
Hardware platform used for evaluating the INA1620 audio operational amplifier.
Functional Block Diagram
Paskelbta: 2018-08-29
| Atnaujinta: 2023-04-25