Overview
The LME49724MR/NOPB is a high-performance, fully-differential audio operational amplifier produced by National Semiconductor, now part of Texas Instruments. This amplifier is optimized for high-fidelity audio applications, combining advanced process technology with state-of-the-art circuit design. It offers ultra-low distortion, low noise, and a high slew rate, making it ideal for demanding audio systems. The LME49724MR/NOPB is designed to deliver superior audio signal amplification with excellent dynamic range and noise immunity.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Power Supply Voltage Range | ±2.5V to ±18V | |
| Total Harmonic Distortion + Noise (THD+N) | 0.00003% (typ) @ RL = 2kΩ, 0.00003% (typ) @ RL = 600Ω | AV = 1, VOUT = 3VRMS, fIN = 1kHz |
| Input Noise Density | 2.1 nV/√Hz @ f = 1kHz | |
| Slew Rate | ±18 V/μs | |
| Output Current Capability | ±80 mA | |
| Common Mode Rejection Ratio (CMRR) | 102 dB (typ) | |
| Power Supply Rejection Ratio (PSRR) | 125 dB (typ) | |
| Input Offset Voltage (VOS) | ±0.2 mV (max) | |
| Input Bias Current | 200 nA (max) | VCM = 0V |
| Unity Gain Bandwidth Product | 50 MHz (typ) | |
| Operating Temperature Range | -40°C to 85°C | |
| Package Type | PSOP EP | |
| Pin Count | 8 |
Key Features
- Ultra-low distortion and low noise, with a THD+N of 0.00003% and input noise density of 2.1 nV/√Hz.
- High slew rate of ±18 V/μs and output current capability of ±80 mA.
- Excellent CMRR (102 dB) and PSRR (125 dB) for superior DC performance.
- Wide supply range of ±2.5V to ±18V with excellent common-mode and power supply rejection.
- Unity gain stable and capable of driving complex loads with capacitive values up to 100 pF.
- Integrated common-mode reference input (VOCM) for fully differential amplification.
- Output short circuit protection for enhanced reliability.
- Available in SO PowerPad package for efficient thermal management.
Applications
- High-fidelity audio amplification systems.
- Professional audio equipment.
- Home theater and high-end audio systems.
- Studio recording and mixing consoles.
- Low-voltage audio applications benefiting from differential amplification.
Q & A
- What is the primary application of the LME49724MR/NOPB?
The LME49724MR/NOPB is primarily used in high-fidelity audio amplification systems.
- What are the key performance metrics of the LME49724MR/NOPB?
The key metrics include ultra-low THD+N (0.00003%), low input noise density (2.1 nV/√Hz), high slew rate (±18 V/μs), and excellent CMRR and PSRR.
- What is the power supply voltage range for the LME49724MR/NOPB?
The power supply voltage range is ±2.5V to ±18V.
- What is the significance of the integrated common-mode reference input (VOCM)?
The VOCM provides fully differential amplification, increasing noise immunity, dynamic range, and reducing harmonic distortion products.
- Can the LME49724MR/NOPB drive complex loads?
Yes, it can drive complex loads with capacitive values up to 100 pF and is unity gain stable.
- What is the operating temperature range of the LME49724MR/NOPB?
The operating temperature range is -40°C to 85°C.
- What package type is the LME49724MR/NOPB available in?
The LME49724MR/NOPB is available in an SO PowerPad package.
- Does the LME49724MR/NOPB have output short circuit protection?
Yes, it has output short circuit protection for enhanced reliability.
- What is the typical unity gain bandwidth product of the LME49724MR/NOPB?
The typical unity gain bandwidth product is 50 MHz.
- Is the LME49724MR/NOPB RoHS compliant?
Yes, the LME49724MR/NOPB is RoHS compliant.
