Overview
The Texas Instruments LME49720NA/NOPB is a high-performance, 2-channel operational amplifier (op-amp) designed for high-fidelity audio applications. This device is part of the ultra-low distortion, low noise, and high slew rate operational amplifier series, optimized for superior audio signal fidelity. It combines advanced leading-edge process technology with state-of-the-art circuit design to deliver outstanding audio performance. The LME49720NA/NOPB features extremely low voltage noise density and vanishingly low total harmonic distortion plus noise (THD+N), making it ideal for demanding audio applications.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 2 |
| Power Supply Voltage Range | ±2.5 to ±17V |
| Total Supply Voltage (min) | 5V |
| Total Supply Voltage (max) | 34V |
| THD+N (AV= 1, VOUT= 3V RMS, fIN= 1kHz) | 0.00003% (typ) for RL= 2kΩ and 600Ω |
| Input Noise Density | 2.7nV/√Hz (typ) |
| Slew Rate | ±20V/µs (typ) |
| Gain Bandwidth Product | 55MHz (typ) |
| Open Loop Gain (RL= 600Ω) | 140dB (typ) |
| Input Bias Current | 10nA (typ) |
| Input Offset Voltage | 0.1mV (typ) |
| DC Gain Linearity Error | 0.000009% (typ) |
| Operating Temperature Range | -40 to 85°C |
| Package Types | SOIC, PDIP, TO-99 Metal Can |
Key Features
- Easily drives 600Ω loads
- Optimized for superior audio signal fidelity
- Output short circuit protection
- PSRR and CMRR exceed 120dB (typ)
- Available in SOIC, PDIP, and TO-99 metal can packages
- Low input bias current and input offset voltage
- High slew rate and gain bandwidth product
Applications
The LME49720NA/NOPB is commonly used in high-fidelity audio equipment such as audio amplifiers and headphone amplifiers where low distortion and high-quality sound reproduction are essential. It is also suitable for instrumentation and measurement equipment where low noise and high stability are critical for accurate signal processing.
Q & A
- What is the primary application of the LME49720NA/NOPB? The primary application is in high-fidelity audio equipment and instrumentation where low noise and high stability are required.
- What is the power supply voltage range for the LME49720NA/NOPB? The power supply voltage range is ±2.5 to ±17V.
- What is the typical THD+N for the LME49720NA/NOPB? The typical THD+N is 0.00003% for RL= 2kΩ and 600Ω.
- What is the input noise density of the LME49720NA/NOPB? The input noise density is 2.7nV/√Hz (typ).
- What is the slew rate of the LME49720NA/NOPB? The slew rate is ±20V/µs (typ).
- What is the gain bandwidth product of the LME49720NA/NOPB? The gain bandwidth product is 55MHz (typ).
- Does the LME49720NA/NOPB have output short circuit protection? Yes, it does have output short circuit protection.
- In what packages is the LME49720NA/NOPB available? It is available in SOIC, PDIP, and TO-99 metal can packages.
- What is the operating temperature range for the LME49720NA/NOPB? The operating temperature range is -40 to 85°C.
- What is the typical input bias current of the LME49720NA/NOPB? The typical input bias current is 10nA.
