- Easily drives 600Ω loads
- Optimized for excellent audio signal fidelity
- Output short-circuit protection
- PSRR and CMRR over 120 dB (typical)
- SOIC, DIP, TO-99 metal can packaging
illustrate
The LME49720 is a fully specified part of the ultra-low distortion, low noise, high slew rate operational amplifier family optimized for high performance, high fidelity applications. Combined with state-of-the-art circuit design and cutting-edge process technology, the LME49720 audio op amp provides outstanding audio performance and superior audio signal amplification. The LME49720 combines a very low voltage noise density (2.7nV/) √ ^Hz) with vanishingly low THD+N (0.00003%) easily meets the most demanding audio applications. To ensure that the most challenging loads are driven without compromise, the LME49720 has a high slew rate of ±20V/μs and an output current capability of ±26 mA. In addition, the dynamic range is maximized by the output stage, which drives a 2kΩ load with a 1.4V supply voltage of 1V over the term, and a 600Ω load while driving.
While the LME49720 excels in CMRR (120 dB), PSRR (120 dB) and VOS（0.1mV）Give excellent operational amplifiers, amplifiers DC performance.
The LME49720 has a wide supply voltage range of ± 2.5V to ± 17V. The input circuitry of the LME49720 maintains excellent common-mode and power supply rejection over this supply voltage range, as well as maintaining its low input bias current. The LME49720 is unity-gain stable. This audio op amp achieves excellent AC performance while driving high complex loads up to 100pF.
While the LME49720 offers 8-pin narrow-body SOIC, 8-pin plastic DIP and 8-lead metal can TO-99. The demo board is in each package.
Main specifications
|
■ Supply voltage range
|
± 2.5V to ± 17V
|
|
■ THD +N（AV =1，OUT= 3VRMS，FVIN= at 1kHz)
|
|
|
RL = 2kΩ
|
0.00003% (typical)
|
|
RL =600Ω
|
0.00003% (typical)
|
|
■ Input noise density
|
2.7nV / √ ^Hz (typical)
|
|
■ Conversion rate
|
±20V/μs (typical)
|
|
■ Gain-bandwidth product
|
55MHz (typical)
|
|
■ Open-loop gain（RL =600Ω）
|
140 dB (typical)
|
|
■ Input bias current
|
10nA (typical)
|
|
■ Input offset voltage
|
0.1mV (typical)
|
|
■ DC gain linearity error
|
0.000009％
|
apply
- Ultra-high-quality audio amplification
- High-fidelity preamplifier
- High-fidelity multimedia
- State-of-the-art phono front ampere
- High-performance professional audio
- High-fidelity equalization and crossover networks
- High-performance line drivers
- High-performance line receivers
- High-fidelity active filters
|