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PDF LME49721 Data sheet ( Hoja de datos )
| Número de pieza | LME49721 | |
| Descripción | High Fidelity Rail-to-Rail Input/Output Audio Operational Amplifier | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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October 2007
LME49721
High Performance, High Fidelity Rail-to-Rail Input/Output
Audio Operational Amplifier
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 ad-
vanced leading-edge process technology with state-of-the-art
circuit design, the LME49721 Rail-to-Rail Input/Output oper-
www.DataSheeat4tiUon.caolmamplifier delivers superior signal amplification for out-
standing performance. The LME49721 combines a very high
slew rate with low THD+N to easily satisfy demanding appli-
cations. 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.
Key Specifications
■ Power Supply Voltage Range
2.2V to 5.5V
■ Quiescent Current
2.15mA (typ)
■
THD+N (AV = 2, VOUT = 4Vp-p, fIN = 1kHz)
RL = 2kΩ
0.00008% (typ)
RL = 600Ω
0.0001% (typ)
■ Input Noise Density
4nV/√Hz (typ), @ 1kHz
■ Slew Rate
±8.5V/μs (typ)
■ Gain Bandwidth Product
■ Open Loop Gain (RL = 600Ω)
■ Input Bias Current
■ Input Offset Voltage
■ PSRR
20MHz (typ)
118dB (typ)
40fA (typ)
0.3mV (typ)
103dB (typ)
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
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
Typical Connection, Pinout, and Package Marking
20204909
FIGURE 1. Buffer Amplifier
© 2007 National Semiconductor Corporation 202049
Order Number LME49721MA
Se NS Package Number M08A
20204910
www.national.com
1 page  
Typical Performance Characteristics Graphs were taken in dual supply configuration.
THD+N vs Frequency
VS = ±2.5V, VOUT = 4VP-P
RL = 2kΩ, AV = 2, BW = 22kHz
THD+N vs Frequency
VS = ±2.5V, VOUT = 4VP-P
RL = 2kΩ, AV = 2
www.DataSheet4U.com
202049t6
THD+N vs Frequency
VS = ±2.5V, VOUT = 4VP-P
RL = 10kΩ, AV = 2, BW = 22kHz
THD+N vs Frequency
VS = ±2.5V, VOUT = 4VP-P
RL = 10kΩ, AV = 2
202049t5
202049t8
THD+N vs Frequency
VS = ±2.5V, VOUT = 4VP-P
RL = 600Ω, AV = 2, BW = 22kHz
THD+N vs Frequency
VS = ±2.5V, VOUT = 4VP-P
RL = 600Ω, AV = 2
202049t7
202049u0
5
202049t9
www.national.com
5 Page 
PSRR vs Frequency
VS = ±1.1V
VRIPPLE = 200mVP-P
RL = 2kΩ
PSRR vs Frequency
VS = ±1.1V
VRIPPLE = 200mVP-P
RL = 10kΩ
www.DataSheet4U.com
PSRR vs Frequency
VS = ±1.1V
VRIPPLE = 200mVP-P
RL = 600Ω
202049v9
PSRR vs Frequency
VS = ±1.5V
VRIPPLE = 200mVP-P
RL = 2kΩ
202049w0
PSRR vs Frequency
VS = ±1.5V
VRIPPLE = 200mVP-P
RL = 10kΩ
202049w1
PSRR vs Frequency
VS = ±1.5V
VRIPPLE = 200mVP-P
RL = 600Ω
202049w2
202049w3
11
202049x4
www.national.com
11 Page | ||
| Páginas | Total 26 Páginas | |
| PDF Descargar | [ Datasheet LME49721.PDF ] | |
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