LME49720 - Dual High Performance, High Fidelity Audio Operational Amplifier from the PowerWise® Family
Datasheet Packaging Samples & Pricing Eval. Boards Reliability Models Application Notes Knowledge Base

Features
•Easily drives 600Ω loads
•Optimized for superior audio signal fidelity
•Output short circuit protection
•PSRR and CMRR exceed 120dB (typ)
•SOIC, DIP, TO-99 metal can packages

Key Specification

■  Power Supply Voltage Range ±2.5V to ±17V
■   THD+N (AV = 1, VOUT = 3VRMS, fIN = 1kHz)  
 RL = 2kΩ 0.00003% (typ)
 RL = 600Ω 0.00003% (typ)
■  Input Noise Density 2.7nV/ √ ^Hz (typ)
■  Slew Rate ±20V/μs (typ)
■  Gain Bandwidth Product 55MHz (typ)
■  Open Loop Gain (RL = 600Ω) 140dB (typ)
■  Input Bias Current 10nA (typ)
■  Input Offset Voltage 0.1mV (typ)
■  DC Gain Linearity Error 0.000009%

General Description

The LME49720 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. More...


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
  Typical Application
click for larger image


ParametersValues
THD 0.00003 %
PSRR 120 dB
Supply Min 5 Volt
Single/Dual/Quad Dual
Special Features Ultra Low Distortion, Very Low Noise
THD Conditions Av=1; Vout=3Vrms; Load=600ohm and 2k
PSRR Conditions delta(Vs)=20V
Supply Current per Amplifier 5.0 mA
Supply Max 34 Volt
Shut down No
Voltage Noise 2.5 nV/root(Hz)
Max Input Bias Current 72 nA
Output Current 42 mA
Offset Voltage, typ 0.1 mV
Gain Bandwidth 55 MHz
Slew Rate 20 Volts/usec
CMRR 120 dB
CMRR Conditions Vcm from -10V to +10V
Temperature Min -40 deg C
Temperature Max 85 deg C
Channels 2 Channels
Input OutputType Not Rail to Rail
Offset Voltage max, 25C 0.7 mV
Automotive Yes
PowerWise Yes


Typical Performance

*click for larger image


  Additional Resources
Application Notes


Connection Diagram

click for larger image



Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
LME49720 Dual High Performance, High Fidelity Audio Operational Amplifier 1064
Kbytes		 22-Oct-07 Download

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Package Availability, Models, Samples & Pricing
Part NumberPackageFactory Lead TimeModelsSamples &
Electronic
Orders		Budgetary PricingStd
Pack
Size		Package
Marking
Format
TypePinsSpec.MSL
Rating		Peak
Reflow		RoHS
Report		CAD
Symbols		WeeksQtyQty$US each
LME49720NABD34V High Performance, High Fidelity Dual Audio Operational AmplifierFull productionLME49860.zip
 
Buy Now 		 CALLN/A-
N/AN/A
LME49720HABD34V High Performance, High Fidelity Dual Audio Operational AmplifierFull productionLME49860.zip
 
Buy Now 		1+$150.001-
N/AN/A
LME49720MABD34V High Performance, High Fidelity Dual Audio Operational AmplifierFull productionLME49860.zip
 
Buy Now 		1+$150.001-
N/AN/A
LME49720HATO-998NOPB1NARoHS N/A Full productionLME49860.zip
Samples
Buy Now 		1K+$10.50tray
of
20		NSZXYTTE#
LME
49720HA
6 weeks100
LME49720MASOIC NARROW8NOPB1260RoHS N/A Full productionLME49860.zip
Samples
Buy Now 		1K+$1.90rail
of
95		NSZXTT
L49720
MA
6 weeks500
LME49720MAXSOIC NARROW8NOPB1260RoHS N/A Full productionLME49860.zip
 
Buy Now 		1K+$1.90reel
of
2500		NSZXTT
L49720
MA
8 weeks7500
LME49720NAMDIP8NOPB1NARoHS N/A Full productionLME49860.zip
Samples
Buy Now 		1K+$1.90rail
of
40		NSUZXYTTE#
LME
49720NA
6 weeks500

General Description

The LME49720 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 LME49720 audio operational amplifiers deliver superior audio signal amplification for outstanding audio performance. The LME49720 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 LME49720 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 LME49720's outstanding CMRR (120dB), PSRR (120dB), and VOS (0.1mV) give the amplifier excellent operational amplifier DC performance.

The LME49720 has a wide supply range of ±2.5V to ±17V. Over this supply range the LME49720’s input circuitry maintains excellent common-mode and power supply rejection, as well as maintaining its low input bias current. The LME49720 is unity gain stable. This Audio Operational Amplifier achieves outstanding AC performance while driving complex loads with values as high as 100pF.

The LME49720 is available in 8–lead narrow body SOIC, 8–lead Plastic DIP, and 8–lead Metal Can TO-99. Demonstration boards are available for each package.

Reliability Metrics

Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LME49720HAVIP III0155750012125003344050185
LME49720MAVIP III0155750012125003344050185
LME49720MAXVIP III0155750012125003344050185
LME49720NAVIP III0155750012125003344050185

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.


More Application Notes

TitleSize in Kbytes Date Click link below to Download
AN-1767: Application Note 1767 LME49721 Evaluation Board 649
Kbytes		 24-Feb-08 Download
AN-1767 (Chinese): Application Note 1767 LME49721 Evaluation Board
 787 Kbytes  

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[Information as of 7-Nov-2009]