LME49724 Datasheet, PDF (1/30 Pages) National Semiconductor (TI) – High Performance, High Fidelity, Fully-Differential Audio Operational Amplifier

LME49724
www.ti.com
SNAS438A – NOVEMBER 2008 – REVISED APRIL 2013
LME49724 High Performance, High Fidelity, Fully-Differential Audio Operational Amplifier
Check for Samples: LME49724
FEATURES
1
•2 Drives 600Ω Loads with Full Output Signal
Swing
• Optimized for Superior Audio Signal Fidelity
• Output Short Circuit Protection
• PSRR and CMRR Exceed 100dB (typ)
• Available in SO PowerPad Package
APPLICATIONS
• Ultra High Quality Audio Amplification
• High Fidelity Preamplifiers and Active Filters
• Simple Single-Ended to Differential
Conversion
• State of the Art D-to-A Converters
• State of the Art A-to-D input Amplifiers
• Professional Audio
• High Fidelity Equalization and Crossover
Networks
• High Performance Line Drivers and Receivers
DESCRIPTION
The LME49724 is an ultra-low distortion, low noise,
high slew rate fully-differential 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 LME49724 fully-differential audio
operational amplifier delivers superior audio signal
amplification for outstanding audio performance. The
LME49724 combines extremely low voltage noise
density (2.1nV/√Hz) with vanishingly low THD+N
(0.00003%) to easily satisfy the most demanding
audio applications. To ensure that the most
challenging loads are driven without compromise, the
LME49724 has a high slew rate of ±18V/μs and an
output current capability of ±80mA. Further, dynamic
range is maximized by an output stage that drives
600Ω loads to 52V_P-P while operating on a ±15V
supply voltage.
The LME49724's outstanding CMRR (102dB), PSRR
(125dB), and V_OS (0.2mV) results in excellent
operational amplifier DC performance.
The LME49724 has a wide supply range of ±2.5V to
±18V. Over this supply range the LME49724’s input
circuitry maintains excellent common-mode and
power supply rejection, as well as maintaining its low
input bias current. The LME49724 is unity gain
stable. This Fully-Differential Audio Operational
Amplifier achieves outstanding AC performance while
driving complex loads with capacitive values as high
as 100pF.
Power Supply Voltage Range
THD+N (A_V = 1, V_OUT = 3V_RMS, f_IN = 1kHz)
Input Noise Density
Slew Rate
Gain Bandwidth Product
Open Loop Gain (R_L = 600Ω)
Input Bias Current
Input Offset Voltage
DC Gain Linearity Error
Table 1. Key Specifications
R_L = 2kΩ
R_L = 600Ω
±2.5V to ±18V
0.00003% (typ)
0.00003% (typ)
2.1nV/√Hz (typ)
±18V/μs (typ)
50 MHz (typ)
125 dB (typ)
60nA (typ)
0.2mV (typ)
0.000009%
1
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2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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