This datasheet provides detailed information on the LME49870, a high performance, high fidelity audio operational amplifier with low distortion, low noise, and high slew rate.
The LME49870 is a 44 V single‑supply audio operational amplifier designed for high‑fidelity applications. It offers ultra‑low distortion, low noise, a high slew rate of 420 V/µs, and can drive demanding loads up to 2 kΩ within 1 V of the supply rails.
The document includes a general description, key specifications, connection diagrams, absolute maximum ratings, electrical characteristics, typical performance graphs (THD+N vs voltage and frequency), and notes on usage and compliance. It also lists typical applications such as preamplifiers, line drivers, and low‑noise industrial circuits.
| Supply Voltage Range | 2.5 V to 22 V |
|---|---|
| Slew Rate | +20 V/µs (typ) |
| Gain Bandwidth Product | 55 MHz (min) |
| Input Noise Density | 2.7 nV/√Hz (typ) |
| THD+N | 0.00003 % (typ) |
| Output Current Capability | 426 mA |
| CMRR | 120 dB (typ) |
| PSRR | 120 dB (typ) |
| Input Bias Current | 10 nA (typ) |
| Input Offset Voltage | 0.1 mV (typ) |
The LME49870 operates from 2.5 V up to 22 V.
Typical total harmonic distortion plus noise is 0.00003 %.
The device has a typical slew rate of +20 V/µs.
It can drive 2 kΩ loads within 1 V of the supply rails and 6 kΩ loads within 1.4 V.