Overview
The INA1620RTWR from Texas Instruments is a high-fidelity audio operational amplifier that integrates four precision-matched thin-film resistor pairs and EMI filtering on-chip. This dual audio operational amplifier is designed to deliver high output current with extremely low distortion, making it ideal for high-performance audio applications. The device operates over a wide supply range of ±2 V to ±18 V and consumes only 2.6 mA of supply current per channel. It also features a low-power shutdown mode with reduced pop-and-click noise, short-circuit protection, and a unique internal layout to minimize crosstalk and interactions between channels.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | WQFN (RTW) | - |
| Pins | 24 | - |
| Operating Temperature Range | -40 to 125 | °C |
| Supply Voltage Range | ±2 V to ±18 V | V |
| Quiescent Current per Channel | 2.6 mA | mA |
| Shutdown Current per Channel | 5 µA | µA |
| Noise Density at 1 kHz | 2.8 nV/√Hz | nV/√Hz |
| Total Harmonic Distortion + Noise (THD+N) | -119 dB (142 mW/Ch Into 32 Ω/Ch) | dB |
| Gain Bandwidth Product | 32 MHz (G = +1000) | MHz |
| Slew Rate | 10 V/µs | V/µs |
| Capacitive-Load Drive Capability | > 600 pF | pF |
| Open-Loop Gain (600-Ω Load) | 136 dB | dB |
Key Features
- High-Quality Thin-Film Resistors matched to 0.004% (Typical)
- Integrated EMI Filters
- Ultra-low Noise: 2.8 nV/√Hz at 1 kHz
- Ultra-low Total Harmonic Distortion + Noise: –119 dB THD+N (142 mW/Ch Into 32 Ω/Ch)
- Wide Gain Bandwidth Product: 32 MHz (G = +1000)
- High Slew Rate: 10 V/µs
- High Capacitive-Load Drive Capability: > 600 pF
- High Open-Loop Gain: 136 dB (600-Ω Load)
- Low Quiescent Current: 2.6 mA per Channel
- Low-Power Shutdown Mode With Reduced Pop-and-Click Noise: 5 µA per Channel
- Short-Circuit Protection
- Wide Supply Range: ±2 V to ±18 V
- Available in Small 24-pin WQFN Package
Applications
- High-Fidelity (HiFi) Headphone Drivers
- Professional Audio Equipment
- Analog and Digital Mixing Consoles
- Audio Test and Measurement
Q & A
- What is the INA1620RTWR? The INA1620RTWR is a high-fidelity audio operational amplifier from Texas Instruments that integrates four precision-matched thin-film resistor pairs and EMI filtering on-chip.
- What is the operating temperature range of the INA1620RTWR? The operating temperature range is -40°C to 125°C.
- What is the supply voltage range for the INA1620RTWR? The supply voltage range is ±2 V to ±18 V.
- What is the quiescent current per channel for the INA1620RTWR? The quiescent current per channel is 2.6 mA.
- Does the INA1620RTWR have a shutdown mode? Yes, it has a low-power shutdown mode with reduced pop-and-click noise, where the current is typically less than 5 µA per channel.
- What is the noise density of the INA1620RTWR at 1 kHz? The noise density is 2.8 nV/√Hz at 1 kHz.
- What is the total harmonic distortion + noise (THD+N) of the INA1620RTWR? The THD+N is -119 dB (142 mW/Ch Into 32 Ω/Ch).
- What is the gain bandwidth product of the INA1620RTWR? The gain bandwidth product is 32 MHz (G = +1000).
- Does the INA1620RTWR have short-circuit protection? Yes, it has short-circuit protection.
- In what package is the INA1620RTWR available? It is available in a small 24-pin WQFN package.
