Overview
The LME49724MRX from Texas Instruments is an ultra-low distortion, low noise, high slew rate fully-differential operational amplifier. It is optimized and fully specified for high performance, high fidelity audio applications. This amplifier combines advanced leading-edge process technology with state-of-the-art circuit design to deliver superior audio signal fidelity. The LME49724MRX is designed to drive challenging loads without compromise, featuring a high slew rate of ±18V/μs and an output current capability of ±80mA. It operates over a wide supply range of ±2.5V to ±18V, making it versatile for various audio systems.
Key Specifications
| Parameter | Typical Value | Conditions |
|---|---|---|
| Power Supply Voltage Range | ±2.5V to ±18V | |
| THD+N (RL = 2kΩ, AV = 1, VOUT = 3VRMS, fIN = 1kHz) | 0.00003% | |
| Input Noise Density | 2.1 nV/√Hz | f = 1kHz |
| Slew Rate | ±18 V/μs | |
| Gain Bandwidth Product | 50 MHz | |
| Input Bias Current | 60 nA | VCM = 0V |
| Input Offset Voltage | 0.2 mV | |
| Common-Mode Rejection Ratio (CMRR) | 102 dB | –10V < VCM < 10V |
| Power Supply Rejection Ratio (PSRR) | 125 dB | VS = ±5V to ±15V |
| Maximum Output Voltage Swing (RL = 600Ω) | 52 VPP | |
| Instantaneous Short Circuit Current | 80 mA |
Key Features
- Ultra-low distortion and low noise, with THD+N of 0.00003% and input noise density of 2.1 nV/√Hz.
- High slew rate of ±18V/μs and output current capability of ±80mA.
- Optimized for superior audio signal fidelity with PSRR and CMRR exceeding 100dB.
- Output short circuit protection and high dynamic range.
- Available in SO PowerPad package for efficient heat dissipation.
- Wide supply range of ±2.5V to ±18V and unity gain stability.
- Enable function for standby mode to reduce system current consumption.
Applications
- Ultra-high quality audio amplification.
- High fidelity preamplifiers and active filters.
- Simple single-ended to differential conversion.
- State of the art D-to-A and A-to-D converters.
- Professional audio systems.
- High fidelity equalization and crossover networks.
- High performance line drivers and receivers.
Q & A
- What is the typical THD+N of the LME49724MRX?
The typical THD+N of the LME49724MRX is 0.00003% for RL = 2kΩ and RL = 600Ω with AV = 1, VOUT = 3VRMS, and fIN = 1kHz.
- What is the input noise density of the LME49724MRX?
The input noise density of the LME49724MRX is 2.1 nV/√Hz at f = 1kHz.
- What is the slew rate of the LME49724MRX?
The slew rate of the LME49724MRX is ±18 V/μs.
- What is the gain bandwidth product of the LME49724MRX?
The gain bandwidth product of the LME49724MRX is 50 MHz.
- What is the common-mode rejection ratio (CMRR) of the LME49724MRX?
The CMRR of the LME49724MRX is 102 dB for –10V < VCM < 10V.
- What is the power supply rejection ratio (PSRR) of the LME49724MRX?
The PSRR of the LME49724MRX is 125 dB for VS = ±5V to ±15V.
- What is the maximum output voltage swing of the LME49724MRX?
The maximum output voltage swing of the LME49724MRX is 52 VPP for RL = 600Ω.
- How does the enable function work on the LME49724MRX?
The LME49724MRX can be placed into standby mode by driving the ENABLE pin below VEE + 1.75V. It is active when the voltage on the ENABLE pin is above VEE + 2.35V.
- What are the typical operating temperatures for the LME49724MRX?
The typical operating temperatures for the LME49724MRX range from –40°C to 85°C.
- In what package is the LME49724MRX available?
The LME49724MRX is available in an 8-SO PowerPad package.
