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PDF LME49720 Data sheet ( Hoja de datos )
| Número de pieza | LME49720 | |
| Descripción | High Fidelity Audio Operational Amplifier | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LME49720 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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March 2007
LME49720
Dual High Performance, High Fidelity Audio Operational
Amplifier
General Description
RL = 2kΩ
0.00003% (typ)
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.
RL = 600Ω
■ Input Noise Density
0.00003% (typ)
2.7nV/√Hz (typ)
Combining advanced leading-edge process technology with
state-of-the-art circuit design, the LME49720 audio opera-
tional amplifiers deliver superior audio signal amplification for
■ Slew Rate
■ Gain Bandwidth Product
±20V/μs (typ)
55MHz (typ)
outstanding audio performance. The LME49720 combines
extremely low voltage noise density (2.7nV/√Hz) with van-
ishingly low THD+N (0.00003%) to easily satisfy the most
■ Open Loop Gain (RL = 600Ω)
■ Input Bias Current
140dB (typ)
10nA (typ)
demanding audio applications. To ensure that the most chal-
lenging loads are driven without compromise, the LME49720
has a high slew rate of ±20V/μs and an output current capa-
■ Input Offset Voltage
■ DC Gain Linearity Error
0.1mV (typ)
0.000009%
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 LME49720's outstanding CMRR (120dB), PSRR
(120dB), and VOS (0.1mV) give the amplifier excellent oper-
ational amplifier DC performance.
Features
■ Easily drives 600Ω loads
■ Optimized for superior audio signal fidelity
■ Output short circuit protection
The LME49720 has a wide supply range of ±2.5V to ±17V. ■ PSRR and CMRR exceed 120dB (typ)
Over this supply range the LME49720’s input circuitry main- ■ SOIC, DIP, TO-99 metal can packages
tains excellent common-mode and power supply rejection, as
Applicationswell as maintaining its low input bias current. The LME497w2ww0.DataSheet4U.com
is unity gain stable. This Audio Operational Amplifier achieves
outstanding AC performance while driving complex loads with ■ Ultra high quality audio amplification
values as high as 100pF.
■ High fidelity preamplifiers
The LME49720 is available in 8–lead narrow body SOIC, 8–
lead Plastic DIP, and 8–lead Metal Can TO-99. Demonstra-
tion boards are available for each package.
■ High fidelity multimedia
■ State of the art phono pre amps
■ High performance professional audio
Key Specifications
■ Power Supply Voltage Range
±2.5V to ±17V
■ High fidelity equalization and crossover networks
■ High performance line drivers
■ High performance line receivers
■ ■ High fidelity active filters
THD+N (AV = 1, VOUT = 3VRMS, fIN = 1kHz)
Typical Application
Passively Equalized RIAA Phono Preamplifier
© 2007 National Semiconductor Corporation 300038
300038k5
www.national.com
1 page  
Typical Performance Characteristics
THD+N vs Output Voltage
VCC = 15V, VEE = –15V
RL = 2kΩ
THD+N vs Output Voltage
VCC = 12V, VEE = –12V
RL = 2kΩ
THD+N vs Output Voltage
VCC = 17V, VEE = –17V
RL = 2kΩ
300038k6
THD+N vs Output Voltage
VCC = 2.5V, VEE = –2.5V
RL = 2kΩ
300038k7
300038k8
THD+N vs Output Voltage
VCC = 15V, VEE = –15V
RL = 600Ω
THD+N vs Output Voltage
VCC = 12V, VEE = –12V
RL = 600Ω
300038i4
300038k9
5
300038l0
www.national.com
5 Page 
Crosstalk vs Frequency
VCC = 15V, VEE = –15V, VOUT = 10VRMS
AV = 0dB, RL = 2kΩ
Crosstalk vs Frequency
VCC = 12V, VEE = –12V, VOUT = 3VRMS
AV = 0dB, RL = 2kΩ
300038c9
Crosstalk vs Frequency
VCC = 12V, VEE = –12V, VOUT = 10VRMS
AV = 0dB, RL = 2kΩ
300038c6
Crosstalk vs Frequency
VCC = 17V, VEE = –17V, VOUT = 3VRMS
AV = 0dB, RL = 2kΩ
300038c7
Crosstalk vs Frequency
VCC = 17V, VEE = –17V, VOUT = 10VRMS
AV = 0dB, RL = 2kΩ
300038d0
Crosstalk vs Frequency
VCC = 2.5V, VEE = –2.5V, VOUT = 1VRMS
AV = 0dB, RL = 2kΩ
300038d1
11
300038n8
www.national.com
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet LME49720.PDF ] | |
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