LME49740_14 Datasheet, PDF (1/24 Pages) Texas Instruments – Quad High-Performance, High-Fidelity Audio Operational Amplifier

LME49740
www.ti.com
SNAS377A – FEBRUARY 2007 – REVISED FEBRUARY 2008
LME49740 Quad High-Performance, High-Fidelity Audio Operational Amplifier
Check for Samples: LME49740
FEATURES
1
•2 Easily Drives 600Ω Loads
• Optimized for Superior Audio Signal Fidelity
• Output Short Circuit Protection
• PSRR and CMRR Exceed 120dB (Typ)
• SOIC and PDIP Packages
APPLICATIONS
• Ultra High-Quality 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
KEY SPECIFICATIONS
• Power Supply Voltage Range: ±2.5V to ±17V
• THD+N (A_V = 1, V_OUT = 3V_RMS, f_IN = 1kHz)
– R_L = 2kΩ: 0.00003% (typ)
– R_L = 600Ω: 0.00003% (typ)
• Input Noise Density: 2.7nV/√Hz (typ)
• Slew Rate: ±20V/μs (typ)
• Gain Bandwidth Product: 55MHz (typ)
• Open Loop Gain (R_L = 600Ω): 140dB (typ)
• Input Bias Current: 10nA (typ)
• Input Offset Voltage: 0.1mV (typ)
• DC Gain Linearity Error: 0.000009%
DESCRIPTION
The LME49740 is part of the ultra-low distortion, low
noise, high slew rate operational amplifier series
optimized and fully specified for high-performance,
high-fidelity applications. Combining advanced
leading-edge process technology with state-of-the-art
circuit design, the LME49740 audio operational
amplifiers deliver superior audio signal amplification
for outstanding audio performance. The LME49740
combines extremely low voltage noise density
(2.7nV/√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 LME49740
has a high slew rate of ±20V/μs and an output current
capability of ±26mA. Further, dynamic range is
maximized by an output stage that drives 2kΩ loads
to within 1V of either power supply voltage and to
within 1.4V when driving 600Ω loads.
The LME49740's outstanding CMRR (120dB), PSRR
(120dB), and V_OS (0.1mV) give the amplifier excellent
operational amplifier DC performance.
The LME49740 has a wide supply range of ±2.5V to
±17V. Over this supply range the LME49740’s input
circuitry maintains excellent common-mode and
power supply rejection, as well as maintaining its low
input bias current. The LME49740 is unity gain
stable. The Audio Operational Amplifier achieves
outstanding AC performance while driving complex
loads with values as high as 100pF.
The LME49740 is available in 14-lead narrow body
SOIC and 14-lead PDIP. Demonstration boards are
available for each package.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
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.
Copyright © 2007–2008, Texas Instruments Incorporated