LME49870 Datasheet, PDF (1/35 Pages) National Semiconductor (TI) – 44V Single High Performance, High Fidelity Audio Operational Amplifier

LME49870
www.ti.com
SNAS413C – SEPTEMBER 2007 – REVISED APRIL 2013
LME49870 44V Single High Performance, High Fidelity Audio Operational Amplifier
Check for Samples: LME49870
FEATURES
1
•2 Easily Drives 600Ω Loads
• Optimized for Superior Audio Signal Fidelity
• Output Short Circuit Protection
• PSRR and CMRR Exceed 120dB (Typ)
APPLICATIONS
• High Quality Audio Amplification
• High Fidelity Preamplifiers, Phono Preamps,
and Multimedia
• High Performance Professional Audio
• High Fidelity Equalization and Crossover
Networks with Active Filters
• High Performance Line Drivers and Receivers
• Low Noise Industrial Applications Including
Test, Measurement, and Ultrasound
KEY SPECIFICATIONS
• Power Supply Voltage Range: ±2.5V to ±22V
• 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 LME49870 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 LME49870 audio operational
amplifier delivers superior audio signal amplification
for outstanding audio performance. The LME49870
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 LME49870
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 LME49870's outstanding CMRR (120dB), PSRR
(120dB), and V_OS (0.1mV) give the amplifier excellent
operational amplifier DC performance.
The LME49870 has a wide supply range of ±2.5V to
±22V. Over this supply range the LME49870
maintains excellent common-mode rejection, power
supply rejection, and low input bias current. The
LME49870 is unity gain stable. This Audio
Operational Amplifier achieves outstanding AC
performance while driving complex loads with values
as high as 100pF.
The LME49870 is available in 8–lead narrow body
SOIC. Demonstration boards are available for each
package.
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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