lme49743mt National Semiconductor Corporation, lme49743mt Datasheet

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lme49743mt

Manufacturer Part Number
lme49743mt
Description
Quad High Performance, High Fidelity Audio Operational Amplifier
Manufacturer
National Semiconductor Corporation
Datasheet

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© 2009 National Semiconductor Corporation
LME49743
Quad High Performance, High Fidelity Audio Operational
Amplifier
General Description
The LME49743 is a low distortion, low noise, high slew rate
operational amplifier optimized and fully specified for high
performance, high fidelity applications. The LME49743 audio
operational amplifier delivers superior audio signal amplifica-
tion for outstanding audio performance. The LME49743 com-
bines low voltage noise density (3.5nV/
(0.0001%) to easily satisfy demanding audio applications. To
ensure that the most challenging loads are driven without
compromise, the LME49743 has a slew rate of ±12V/μs and
an output current capability of ±21mA.
The LME49743's outstanding CMRR(106dB), PSRR(98dB),
and V
amplifier DC performance.
The LME49743 has a wide supply range of ±4.0V to ±17V.
Over this supply range the LME49743’s input circuitry main-
tains excellent common-mode, power supply rejection, and
low input bias current. The LME49743 is unity gain stable.
The LME49743 is available in 14–lead TSSOP.
OS
(±0.15mV) give the amplifier excellent operational
300481
Hz) and THD+N
Key Specifications
Features
Applications
■ 
■ 
  
■ 
■ 
■ 
■ 
■ 
■ 
Easily drives 600Ω loads
Optimized for superior audio signal fidelity
Output short circuit protection
98dB (typ) PSRR and 106dB (typ) CMRR
TSSOP package
Audio amplifiers and preamplifiers
Professional Audio
Equalization and crossover networks
Line drivers and receivers
Active filters
f
Power Supply Voltage Range
THD+N (A
Input Noise Density
Slew Rate
Gain Bandwidth Product
Open Loop Gain (R
Input Bias Current
Input Offset Voltage
IN
R
R
= 1kHz)
L
L
= 2kΩ
= 600Ω
V
= 1, V
OUT
L
= 600Ω)
= 3V
RMS
,
January 12, 2009
3.5nV/
±4.0V to ±17V
±0.15mV (typ)
0.0001% (typ)
0.0001% (typ)
±12V/μs (typ)
www.national.com
30MHz (typ)
110dB (typ)
190nA (typ)
Hz (typ)

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lme49743mt Summary of contents

Page 1

... Over this supply range the LME49743’s input circuitry main- tains excellent common-mode, power supply rejection, and low input bias current. The LME49743 is unity gain stable. The LME49743 is available in 14–lead TSSOP. © 2009 National Semiconductor Corporation Key Specifications ■  Power Supply Voltage Range ■ ...

Page 2

... Connection Diagram www.national.com Order Number LME49743MT See NS Package Number — MTC14 2 30048101 ...

Page 3

Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Power Supply Voltage ( Storage Temperature   Input Voltage (V-) Output ...

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Symbol Parameter V Maximum Output Voltage Swing OUTMAX I Output Current OUT I Short Circuit Current OUT-CC R Output Impedance OUT C Capacitive Load Drive Overshoot LOAD I Total Quiescent Current S Note 1: Absolute Maximum Ratings indicate limits beyond ...

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Typical Performance Characteristics THD+N vs Output Voltage V = ±15V 2kΩ 1kHz S L 30kHz BW THD+N vs Output Voltage = 600Ω 1kHz V = ±15V 30kHz BW THD+N vs Frequency ...

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Frequency V = ±15V 2kΩ RIPPLE +PSRR vs Frequency = 600Ω ±15V −PSRR vs Frequency V = ±15V 10kΩ www.national.com = 200mV ...

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CMRR vs Frequency V = ±15V 2kΩ 200mV 30048189 CMRR vs Frequency = 600Ω ±15V 200mV 30048191 Crosstalk vs Frequency V = ±15V, ...

Page 8

IMD vs Output Voltage V = ±5V 7kHz/60Hz 4:1 SMPTE IMD vs Output Voltage V = ±5V 7kHz/60Hz 4:1 SMPTE Output Voltage vs Supply Voltage R = 10kΩ, THD+N = 0.1% L www.national.com = ...

Page 9

Supply Current vs Supply Voltage 300481c4 Scope Photo Large Signal, Non-Inverting Equivalent Input Noise vs Frequency 30048188 Scope Photo Small Signal Scope Photo Large Signal, Inverting 30048186 Power Bandwidth 9 30048185 30048187 30048192 www.national.com ...

Page 10

Open Loop Gain and Phase vs Frequency www.national.com 30048193 10 ...

Page 11

Application Information DISTORTION MEASUREMENTS The vanishingly low residual distortion produced by LME49743 is below the capabilities of all commercially avail- able equipment. This makes distortion measurements just slightly more difficult than simply connecting a distortion me- ter to the amplifier’s ...

Page 12

Application Hints The LME49743 is a high speed op amp with excellent phase margin and stability. Capacitive loads up to 100pF will cause little change in the phase characteristics of the amplifiers and are therefore allowable. Noise Measurement Circuit Complete ...

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Typical Applications State Variable Filter AC/DC Converter 13 30048137 30048138 www.national.com ...

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Channel Panning Circuit (Pan Pot) www.national.com Line Driver 30048139 Tone Control 30048141 30048142 14 30048140 ...

Page 15

0.33 μ S kHz A Weighted A Weighted kHz Illustration is 101(V2 − V1) RIAA Preamp ...

Page 16

Note 10: At volume of change = ±12 dB    1.7    Reference: “AUDIO/RADIO HANDBOOK”, National Semiconductor, 1980, Page 2–61 www.national.com 10 Band Graphic Equalizer fo (Hz 0.12μF 4.7μF 32 75kΩ 0.056μF 3.3μF 64 ...

Page 17

Revision History Rev Date 1.0 03/26/08 1.01 01/12/09 Description Initial release. Fixed a typo. 17 www.national.com ...

Page 18

... Physical Dimensions www.national.com inches (millimeters) unless otherwise noted Dual-In-Line Package Order Number LME49743MT NS Package Number MTC14 18 ...

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Notes 19 www.national.com ...

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... National Semiconductor and the National Semiconductor logo are registered trademarks of National Semiconductor Corporation. All other brand or product names may be trademarks or registered trademarks of their respective holders. ...

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