- Easily drives 600Ω loads
- Superior audio signal fidelity optimized
- Output short-circuit protection
- PSRR and CMRR over 120 dB (typical)
illustrate
The LME49870 is part of the ultra-low distortion, low noise, high slew rate operational amplifier family, high performance, high fidelity application optimization and full specification. Combined with state-of-the-art circuit design and advanced cutting-edge process technology, the LME49870 audio operational amplifier provides superior audio signal amplification with superior audio performance. The LME49870 combines extremely low voltage noise density (2.7nV// √ ^Hz) with a negligible THD + N (0.00003%), easily suitable for the most demanding audio applications. To ensure that the most challenging loads are driven without compromise, the LME49870 has a high slew rate ± 20V/μs and an output current capability of ±26 mA. In addition, dynamic range is maximized when driving an output stage within 1V and 1.4V of either supply voltage within a 2kΩ load range.
The LME49870 has excellent CMRR (120 dB), (PSRR 120 dB) and VOS（0.1mV）Amplifier: Excellent op amp DC performance.
The LME49870 has a wide supply voltage range of ± 2.5V to ± 22V. The LME49870 maintains excellent common-mode rejection ratio, power supply rejection, and low input bias current over this supply voltage range. The LME49870 is unity gain stable. This audio op amp achieves excellent AC performance with complex loads up to 100pF high values when driving.
The LME49870 is an 8-pin narrow SOIC. Demo board for each package.
Main specifications
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■ Supply voltage range
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± 2.5V to ± 22V
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■ THD + N （AV = 1，VOUT= 3VRMS= 1kHz, fat）
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RL = 2kΩ
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0.00003% (typical)
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RL =600Ω
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0.00003% (typical)
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■ Input noise density
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2.7nV / √ ^ Hz (typical)
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■ Slew rate
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±20V/μs (typical)
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■ Gain-bandwidth product
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55MHz (typical)
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■ Open-loop gain（RL =600Ω）
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140 dB (typical)
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■ Input bias current
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10nA (typical)
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■ Input offset voltage
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0.1mV (typical)
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■ DC gain linearity error
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0.000009％
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apply
- High-quality audio amplification
- High-fidelity preamps, phono preamps, and multimedia
- High-performance professional audio
- Active filters for high-fidelity equalization and crossover networks
- High-performance line drivers and receivers
- Low noise industrial applications, including test, measurement and ultrasound
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