Datasheet LME49710 (National Semiconductor)

LME49710 High Performance, High Fidelity Audio Operational Amplifier
March 2007
LME49710 High Performance, High Fidelity Audio Operational Amplifier General Description Key Specifications
The LME49710 is part of the ultra-low distortion, low noise, ■ Power Supply Voltage Range ±2.5V to ±17V high slew rate operational amplifier series optimized and fully specified for high performance, high fidelity applications. ■ THD+N (A = 1, V = 3V , f = 1kHz) V OUT RMS IN Combining advanced leading-edge process technology with R = 2kΩ 0.00003% (typ) state-of-the-art circuit design, the LME49710 audio opera- L tional amplifiers deliver superior audio signal amplification for R = 600Ω L 0.00003% (typ) outstanding audio performance. The LME49710 combines ■ Input Noise Density 2.5nV/√Hz (typ) extremely low voltage noise density (2.5nV/Hz) with vanish- ingly low THD+N (0.00003%) to easily satisfy the most de- ■ Slew Rate ±20V/μs (typ) manding audio applications. To ensure that the most ■  challenging loads are driven without compromise, the Gain Bandwidth Product 55MHz (typ) LME49710 has a high slew rate of ±20V/μs and an output ■ Open Loop Gain (R = 600Ω) 140dB (typ) L current capability of ±26mA. Further, dynamic range is max- imized by an output stage that drives 2kΩ loads to within 1V ■ Input Bias Current 7nA (typ) of either power supply voltage and to within 1.4V when driving ■ Input Offset Voltage 0.05mV (typ) 600Ω loads. ■  The LME49710's outstanding CMRR(120dB), PSRR(120dB), DC Gain Linearity Error 0.000009% and V (0.05mV) give the amplifier excellent operational OS amplifier DC performance.
Features
The LME49710 has a wide supply range of ±2.5V to ±17V. ■ Easily drives 600Ω loads Over this supply range the LME49710’s input circuitry main- ■ Optimized for superior audio signal fidelity tains excellent common-mode and power supply rejection, as well as maintaining its low input bias current. The LME49710 ■ Output short circuit protection is unity gain stable. The Audio Operational Amplifier achieves ■ PSRR and CMRR exceed 120dB (typ) outstanding AC performance while driving complex loads with ■ SOIC, DIP, TO-99 metal can packages values as high as 100pF. The LME49710 is available in 8–lead narrow body SOIC, 8–
Applications
lead plastic DIP, and 8–lead metal can TO-99. Demonstration ■ Ultra high quality audio amplification boards are available for each package. ■ High fidelity preamplifiers ■ High fidelity multimedia ■ State of the art phono pre amps ■ High performance professional audio ■ High fidelity equalization and crossover networks ■ High performance line drivers ■ High performance line receivers ■ High fidelity active filters © 2007 National Semiconductor Corporation 202104 www.national.com Document Outline LME49710 General Description Key Specifications Features Applications Typical Application FIGURE 1. Passively Equalized RIAA Phono Preamplifier Connection Diagrams Absolute Maximum Ratings Electrical Characteristics Typical Performance Characteristics Application Hints Noise Measurement Circuit Typical Applications Application Information DISTORTION MEASUREMENTS FIGURE 2. THD+N and IMD Distortion Test Circuit Revision History Physical Dimensions