LM4562 Datasheet, PDF (1/33 Pages) National Semiconductor (TI) – Dual High Performance, High Fidelity Audio Operational Amplifier

August 2006
LM4562
Dual High Performance, High Fidelity Audio Operational
Amplifier
General Description
The LM4562 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 LM4562 audio operational
amplifiers deliver superior audio signal amplification for out-
standing audio performance. The LM4562 combines ex-
tremely low voltage noise density (2.7nV/√Hz) with vanish-
ingly low THD+N (0.00003%) to easily satisfy the most
demanding audio applications. To ensure that the most chal-
lenging loads are driven without compromise, the LM4562
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 LM4562’s outstanding CMRR (120dB), PSRR (120dB),
and V_OS (0.1mV) give the amplifier excellent operational
amplifier DC performance.
The LM4562 has a wide supply range of ±2.5V to ±17V.
Over this supply range the LM4562’s input circuitry main-
tains excellent common-mode and power supply rejection,
as well as maintaining its low input bias current. The LM4562
is unity gain stable. This Audio Operational Amplifier
achieves outstanding AC performance while driving complex
loads with values as high as 100pF.
The LM4562 is available in 8–lead narrow body SOIC,
8–lead Plastic DIP and 8–lead Metal Can TO-99. Demon-
stration boards are available for each package.
Key Specifications
j Power Supply Voltage Range
±2.5V to ±17V
j THD+N (A_V = 1, V_OUT = 3V_RMS, f_IN = 1kHz)
R_L = 2kΩ
0.00003% (typ)
R_L = 600Ω
0.00003% (typ)
j Input Noise Density
2.7nV/√Hz (typ)
j Slew Rate
±20V/µs (typ)
j Gain Bandwidth Product
55MHz (typ)
j Open Loop Gain (R_L = 600Ω)
j Input Bias Current
140dB (typ)
10nA (typ)
j Input Offset Voltage
0.1mV (typ)
j DC Gain Linearity Error
0.000009%
Features
n Easily drives 600Ω loads
n Optimized for superior audio signal fidelity
n Output short circuit protection
n PSRR and CMRR exceed 120dB (typ)
n SOIC, DIP, TO-99 metal can packages
Applications
n Ultra high quality audio amplification
n High fidelity preamplifiers
n High fidelity multimedia
n State of the art phono pre amps
n High performance professional audio
n High fidelity equalization and crossover networks
n High performance line drivers
n High performance line receivers
n High fidelity active filters
Typical Application
Passively Equalized RIAA Phono Preamplifier
© 2006 National Semiconductor Corporation DS201572
201572K5
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