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PDF LME49723 Data sheet ( Hoja de datos )
| Número de pieza | LME49723 | |
| Descripción | Dual High Fidelity Audio Operational Amplifier | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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January 7, 2008
LME49723
Dual High Fidelity Audio Operational Amplifier
General Description
The LME49723 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 LME49723 audio opera-
tional amplifiers deliver superior audio signal amplification for
outstanding audio performance. The LME49723 combines
www.DataSheeet4xUtr.ecmomely low voltage noise density (3.6nV/√Hz) with van-
ishingly low THD+N (0.0002%) to easily satisfy the most
demanding audio applications. To ensure that the most chal-
lenging loads are driven without compromise, the LME49723
has a high slew rate of ±20V/μs and an output current capa-
bility 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 LME49723's outstanding CMRR (100dB), PSRR
(100dB), and VOS (0.3mV) give the amplifier excellent oper-
ational amplifier DC performance.
The LME49723 has a wide supply range of ±2.5V to ±17V.
Over this supply range the LME49723’s input circuitry main-
tains excellent common-mode and power supply rejection, as
well as maintaining its low input bias current. The LME49723
is unity gain stable.
The LME49723 is available in an 8–lead narrow body SOIC.
Demonstration boards are available for each package.
Key Specifications
■ Power Supply Voltage Range
■
THD+N (AV = 1, VOUT = 3VRMS, fIN = 1kHz)
RL = 2kΩ
±2.5V to ±17V
0.0002% (typ)
RL = 600Ω
■ Input Noise Density
■ Slew Rate
■ Gain Bandwidth Product
■ Open Loop Gain (RL = 600Ω)
■ Input Bias Current
■ Input Offset Voltage
0.0002% (typ)
3.6nV/√Hz (typ)
±8V/μs (typ)
17MHz (typ)
105dB (typ)
200nA (typ)
0.3mV (typ)
Features
■ Easily drives 600Ω loads
■ Optimized for superior audio signal fidelity
■ Output short circuit protection
■ PSRR and CMRR exceed 100dB (typ)
■ SOIC package
Applications
■ High quality audio amplification
■ High fidelity preamplifiers
■ High fidelity multimedia
■ 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
Passively Equalized RIAA Phono Preamplifier
© 2008 National Semiconductor Corporation 300362
300362k5
www.national.com
1 page  
Typical Performance Characteristics
THD+N vs Output Voltage
VS = ±5V, RL = 2kΩ
THD+N vs Output Voltage
VS = ±5V, RL = 10kΩ
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THD+N vs Output Voltage
VS = ±5V, RL = 600Ω
30036281
THD+N vs Output Voltage
VS = ±15V, RL = 2kΩ
30036282
THD+N vs Output Voltage
VS = ±15V, RL = 10kΩ
30036283
THD+N vs Output Voltage
VS = ±15V, RL = 600Ω
30036284
30036285
5
30036286
www.national.com
5 Page 
Supply Current vs Supply Voltage
RL = 10kΩ
Supply Current vs Supply Voltage
RL = 600Ω
www.DataSheet4U.com
Noninverting Amp
30036279
Noninverting Amp
30036280
Inverting Amp
30036224
30036225
Voltage Gain & Phase vs Frequency
30036226
11
30036210
www.national.com
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet LME49723.PDF ] | |
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