1FEATURES

2? Rail-to-Rail Input and Output

? Easily Drives 10kΩ Loads to Within 10mV of

Each Power Supply Voltage

? Optimized for Superior Audio Signal Fidelity

? Output Short Circuit Protection

APPLICATIONS

? Ultra High-Quality Portable Audio

Amplification

? 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

? DAC I–V Converter

? ADC Front-End Signal Conditioning

KEY SPECIFICATIONS

? Power Supply Voltage Range: 2.2V to 5.5V

? Quiescent Current: 2.15mA (typ)

? THD+N (AV = 2, VOUT = 4Vp-p, f IN = 1kHz)

– RL = 2kΩ: 0.00008% (typ)

– RL = 600Ω: 0.0001% (typ)

? Input Noise Density: 4nV/√Hz (typ), @ 1kHz

? Slew Rate: ±8.5V/μs (typ)

? Gain Bandwidth Product: 20MHz (typ)

? Open Loop Gain (RL = 600Ω): 118dB (typ)

? Input Bias Current: 40fA (typ)

? Input Offset Voltage: 0.3mV (typ)

? PSRR: 103dB (typ)

DESCRIPTION

The LME49721 is a low-distortion, low-noise Rail-to-

Rail Input/Output operational amplifier optimized and

fully specified for high-performance, high-fidelity

applications. Combining advanced leading-edge

process technology with state-of-the-art circuit

design, the LME49721 Rail-to-Rail Input/Output

operational amplifier delivers superior signal

amplification for outstanding performance. The LME49721 combines a very high slew rate with low

THD+N to easily satisfy demanding applications. To

ensure that the most challenging loads are driven

without compromise, the LME49721 has a high slew

rate of ±8.5V/μs and an output current capability of

±9.7mA. Further, dynamic range is maximized by an

output stage that drives 10kΩ loads to within 10mV of

either power supply voltage.

The LME49721 has a wide supply range of 2.2V to

5.5V. Over this supply range the LME49721’s input

circuitry maintains excellent common-mode and

power supply rejection, as well as maintaining its low

input bias current. The LME49721 is unity gain

stable.