lme49725ma National Semiconductor Corporation, lme49725ma Datasheet

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lme49725ma

Manufacturer Part Number
lme49725ma
Description
Powerwise Dual High Performance, High Fidelity Audio Operational Amplifier
Manufacturer
National Semiconductor Corporation
Datasheet
1.LME49725MA.pdf (24 pages)
© 2008 National Semiconductor Corporation
LME49725
PowerWise® Dual High Performance, High Fidelity Audio
Operational Amplifier
General Description
The LME49725 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 LME49725 audio opera-
tional amplifiers deliver superior audio signal amplification for
outstanding audio performance. The LME49725 combines
extremely low voltage noise density (3.3nV/
ishingly low THD+N (0.00004%) to easily satisfy the most
demanding audio applications. To ensure that the most chal-
lenging loads are driven without compromise, the LME49725
has a high slew rate of ±15V/μs and an output current capa-
bility of ±22mA. 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.
Part of the PowerWise® family of energy efficient solutions,
the LME49725 consumes only 3.0mA of supply current per
amplifier while providing superior performance to high perfor-
mance, high fidelity applications.
The LME49725's outstanding CMRR (120dB), PSRR
(120dB), and V
ational amplifier DC performance.
The LME49725 has a wide supply range of ±4.5V to ±18V.
Over this supply range the LME49725’s input circuitry main-
tains excellent common-mode and power supply rejection, as
well as maintaining its low input bias current. The LME49725
is unity gain stable. This audio operational amplifier achieves
outstanding AC performance while driving complex loads with
values as high as 100pF.
The LME49725 is available in 8–lead narrow body SOIC.
OS
(0.5mV) give the amplifier excellent oper-
300342
√
Hz) with van-
Key Specifications
Features
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Applications
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R
R
Optimized for superior audio signal fidelity
Output short circuit protection
PSRR and CMRR exceed 120dB (typ)
Audio amplification
Preamplifiers
Multimedia
Phono preamplifiers
Professional audio
Equalization and crossover networks
Line drivers
Line receivers
Active filters
(A
Power Supply Voltage Range
THD+N
Quiescent current per Amplifier
Input Noise Density
Slew Rate
Gain Bandwidth Product
Open Loop Gain (R
Input Bias Current
Input Offset Voltage
DC Gain Linearity Error
L
L
V
= 2kΩ
= 600Ω
= 1, V
OUT
= 3V
RMS
L
= 600Ω)
, f
IN
= 1kHz)
0.000009% (typ)
3.3nV/
0.00004% (typ)
0.00004% (typ)
±4.5V to ±18V
±15V/μs (typ)
www.national.com
40MHz (typ)
April 3, 2008
3.0mA (typ)
135dB (typ)
0.5mV (typ)
15nA (typ)
√
Hz (typ)

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lme49725ma Summary of contents

Page 1

... This audio operational amplifier achieves outstanding AC performance while driving complex loads with values as high as 100pF. The LME49725 is available in 8–lead narrow body SOIC. © 2008 National Semiconductor Corporation Key Specifications ■  Power Supply Voltage Range ■  ...

Page 2

... Connection Diagrams www.national.com Order Number LME49725MA See NS Package Number — M08A LME49725 Top Mark 300342p0 N — National logo Z — Assembly plant code X — 1 Digit date code TT — Die traceability L49725 — LME49725 MA — Package code 2 30034255 ...

Page 3

Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Power Supply Voltage ( Storage Temperature Input Voltage Differential Input Voltage ...

Page 4

Symbol Parameter A Open Loop Voltage Gain VOL V Maximum Output Voltage Swing OUTMAX I Output Current OUT I Instantaneous Short Circuit Current OUT-CC R Output Impedance OUT C Capacitive Load Drive Overshoot LOAD I Quiescent Current per Amplifier S ...

Page 5

Typical Performance Characteristics THD+N vs Frequency V = 4.5V 1.2V S OUT RMS THD+N vs Frequency V = 18V OUT RMS THD+N vs Frequency V = 15V ...

Page 6

THD+N vs Frequency V = 4.5V 1.2V S OUT THD+N vs Frequency V = 18V OUT RMS THD+N vs Output Voltage = 600Ω 1kHz V = 15V www.national.com , ...

Page 7

THD+N vs Output Voltage V = 4.5V 2kΩ 1kHz S L 30034228 THD+N vs Output Voltage V = 18V 2kΩ 1kHz S L 30034230 THD+N vs Output Voltage V = 15V, R ...

Page 8

CMRR vs Frequency V = 4.5V CMRR vs Frequency = 600Ω 15V CMRR vs Frequency V = 15V www.national.com = 600Ω 30034283 30034285 = 2kΩ 30034278 8 CMRR vs ...

Page 9

CMRR vs Frequency V = 4.5V 10kΩ CMRR vs Frequency V = 18V 10kΩ +PSRR vs Frequency V = 4.5V 10kΩ 200mV S L RIPPLE CMRR vs Frequency ...

Page 10

Frequency V = 15V 2kΩ RIPPLE +PSRR vs Frequency = 600Ω 15V RIPPLE +PSRR vs Frequency V = 18V 10kΩ RIPPLE www.national.com ...

Page 11

Frequency V = 4.5V 2kΩ 200mV S L RIPPLE -PSRR vs Frequency = 600Ω 4.5V 200mV S L RIPPLE -PSRR vs Frequency V = 15V 10kΩ, V ...

Page 12

Frequency V = 18V 2kΩ RIPPLE -PSRR vs Frequency = 600Ω 18V RIPPLE Crosstalk vs Frequency V = 15V OUT RMS www.national.com = ...

Page 13

Crosstalk vs Frequency V = 4.5V 1. 2kΩ S OUT RMS, L 30034286 Crosstalk vs Frequency V = 18V 2kΩ S OUT RMS, L 30034288 Crosstalk vs Frequency = ...

Page 14

Crosstalk vs Frequency V = 15V OUT RMS, Crosstalk vs Frequency V = 18V OUT RMS IMD vs Output Voltage = 600Ω 15V www.national.com = 600Ω , ...

Page 15

IMD vs Output Voltage V = 4.5V 2kΩ 30034210 IMD vs Output Voltage V = 18V 2kΩ 30034212 IMD vs Output Voltage V = 15V 10kΩ 30034265 IMD ...

Page 16

Total Quiescent Current vs Power Supply Current Noise vs Frequency V = 15V –15V, No Load CC EE www.national.com Voltage Noise Density vs Frequency V = 15V 30034246 300342a8 16 = –15V, No Load EE 30034247 ...

Page 17

Application Information OPERATING RATINGS AND BASIC DESIGN GUIDELINES The LME49725 has a supply voltage range from +9V to +36V single supply or ±4.5V to ±18V dual supply. Bypass capacitors for the supplies should be placed as close to the amplifier ...

Page 18

Demonstration Board Schematic www.national.com 18 30034260 ...

Page 19

Bill Of Materials For Demonstration Board (Inverting Configuration) Description Ceramic Capacitor 0.1μF, 10% 50V 0805 SMD Tantalum Capacitor 10μF, 10% 20V, B-size JMPR1, JMPR4, R1, R4, R6, R9 CRCW0805000020EA Resistor 0Ω, 1/8W, 1% 0805 SMD Resistor 10kΩ, 1/8W, 1% 0805 ...

Page 20

Demonstration Board Layout www.national.com 30034262 Silkscreen Layer 30034263 Top Layer 30034261 Bottom Layer 20 ...

Page 21

Revision History Rev Date 1.0 04/03/08 Description Initial release. 21 www.national.com ...

Page 22

... Physical Dimensions www.national.com inches (millimeters) unless otherwise noted Narrow SOIC Package Order Number LME49725MA NS Package Number M08A 22 ...

Page 23

Notes 23 www.national.com ...

Page 24

... National Semiconductor and the National Semiconductor logo are registered trademarks of National Semiconductor Corporation. All other brand or product names may be trademarks or registered trademarks of their respective holders. ...

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