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LME49721 -
High Performance, High Fidelity Rail-to-Rail Input/Output Audio Operational Amplifier
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Features
| • | Rail-to-rail Input and Output |
| • | Easily drives 10kΩ loads to within 10mV of each power supply voltage |
| • | Optimized for superior audio signal fidelity |
| • | Output short circuit protection |
Key Specification
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Power Supply Voltage Range
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2.2V to 5.5V
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Quiescent Current
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2.15mA (typ)
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THD+N (AV = 2, VOUT = 4Vp-p, fIN = 1kHz)
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| RL = 2kΩ
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0.00008% (typ)
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| RL = 600Ω
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0.0001% (typ)
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Input Noise Density
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4nV/
√
^Hz (typ), @ 1kHz
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Slew Rate
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±8.5V/μs (typ)
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Gain Bandwidth Product
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20MHz (typ)
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Open Loop Gain (RL = 600Ω)
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118dB (typ)
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Input Bias Current
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40fA (typ)
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Input Offset Voltage
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0.3mV (typ)
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PSRR
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103dB (typ)
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General Description
The LME49721 is a low distortion, low noise Rail-to-Rail Input/Output operational amplifier optimized and fully specified
for high performance, high fidelity applications. More...
Applications
| • | Ultra high quality portable 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 |
| • | DAC I–V converter |
| • | ADC front-end signal conditioning |
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Typical Application
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Parametric Table
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Parametric Table
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Typical Performance
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Datasheet
Package Availability, Models, Samples & Pricing
General Description
The LME49721 is a low distortion, low noise Rail-to-Rail Input/Output 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 LME49721 Rail-to-Rail Input/Output operational amplifier delivers superior signal amplification for outstanding
performance. The LME49721 combines a very high slew rate with low THD+N to easily satisfy demanding applications. To ensure
that the most challenging loads are driven without compromise, the LME49721 has a high slew rate of ±8.5V/μs and an output
current capability of ±9.7mA. Further, dynamic range is maximized by an output stage that drives 10kΩ loads to within 10mV
of either power supply voltage.
The LME49721 has a wide supply range of 2.2V to 5.5V. Over this supply range the LME49721’s input circuitry maintains excellent
common-mode and power supply rejection, as well as maintaining its low input bias current. The LME49721 is unity gain stable.
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
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LME49721MA | CMOS7 | 0 | 16561 | 0 | 0 | 954000 | 4 | 270700104
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LME49721MAX | CMOS7 | 0 | 16561 | 0 | 0 | 954000 | 4 | 270700104
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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.
Application Notes
| Title | Size in Kbytes |
Date |
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| AN-1767: Application Note 1767 LME49721 Evaluation Board |
649 Kbytes |
24-Feb-08 |
Download |
AN-1767 (Chinese): Application Note 1767 LME49721 Evaluation Board
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787 Kbytes |
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[Information as of 3-Jul-2009]
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RoHS Compliance Information
