LME49740MABD National Semiconductor, LME49740MABD Datasheet

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LME49740MABD

Manufacturer Part Number
LME49740MABD
Description
BOARD EVALUATION LME49740MA
Manufacturer
National Semiconductor
Series
PowerWise®r
Datasheet
1.LME49740MABD.pdf (20 pages)

Specifications of LME49740MABD

Channels Per Ic
4 - Quad
Amplifier Type
Audio
Output Type
Single-Ended
Slew Rate
20 V/µs
Current - Output / Channel
26mA
Operating Temperature
-40°C ~ 85°C
Current - Supply (main Ic)
18.5mA
Voltage - Supply, Single/dual (±)
±2.5 V ~ 17 V
Board Type
Fully Populated
Utilized Ic / Part
LME49740
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
-3db Bandwidth
-
© 2008 National Semiconductor Corporation
LME49740
Quad High Performance, High Fidelity Audio Operational
Amplifier
General Description
The LME49740 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 LME49740 audio opera-
tional amplifiers deliver superior audio signal amplification for
outstanding audio performance. The LME49740 combines
extremely low voltage noise density (2.7nV/
ishingly 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 LME49740
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 LME49740's outstanding CMRR(120dB), PSRR(120dB),
and V
plifier DC performance.
The LME49740 has a wide supply range of ±2.5V to ±17V.
Over this supply range the LME49740’s input circuitry main-
tains excellent common-mode and power supply rejection, as
well as maintaining its low input bias current. The LME49740
is unity gain stable. The Audio Operational Amplifier achieves
outstanding AC performance while driving complex loads with
values as high as 100pF.
The LME49740 is available in 14–lead narrow body SOIC and
14–lead plastic DIP. Demonstration boards are available for
each package.
OS
(0.1mV) give the amplifier excellent operational am-
202105
√
HZ) with van-
Key Specifications
Features
■
■
■
■
■
Applications
■
■
■
■
■
■
■
■
■
■ 
■ 
  
■ 
■ 
■ 
■ 
■ 
■ 
■ 
R
R
Easily drives 600Ω loads
Optimized for superior audio signal fidelity
Output short circuit protection
PSRR and CMRR exceed 120dB (typ)
SOIC and DIP packages
Ultra high quality 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
f
Power Supply Voltage Range
THD+N (A
Input Noise Density
Slew Rate
Gain Bandwidth Product
Open Loop Gain (R
Input Bias Current
Input Offset Voltage
DC Gain Linearity Error
IN
L
L
= 2kΩ
= 600Ω
= 1kHz)
V
= 1, V
OUT
L
= 600Ω)
= 3V
RMS
,
February 8, 2008
2.7nV/
0.00003% (typ)
0.00003% (typ)
±2.5V to ±17V
±20V/μs (typ)
www.national.com
55MHz (typ)
140dB (typ)
0.1mV (typ)
0.000009%
10nA (typ)
√
Hz (typ)

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LME49740MABD Summary of contents

Page 1

... AC performance while driving complex loads with values as high as 100pF. The LME49740 is available in 14–lead narrow body SOIC and 14–lead plastic DIP. Demonstration boards are available for each package. © 2008 National Semiconductor Corporation Key Specifications ■  Power Supply Voltage Range ■  ...

Page 2

Typical Application FIGURE 1. Passively Equalized RIAA Phono Preamplifier Connection Diagram www.national.com Order Number LME49740MA See NS Package Number — M14A Order Number LME49740NA See NS Package Number — N14A 2 20210502 20210501 ...

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 (V-) Output Short Circuit (Note 3) Power Dissipation Electrical Characteristics and T = 25C, unless otherwise specified. ...

Page 4

Symbol Parameter V Maximum Output Voltage Swing OUTMAX I Output Current OUT I Short Circuit Current OUT-CC R Output Impedance OUT C Capacitive Load Drive Overshoot LOAD I Total Quiescent Current S Note 1: Absolute Maximum Ratings indicate limits beyond ...

Page 5

Typical Performance Characteristics THD+N vs Output Voltage V = 15V –15V THD+N vs Frequency V = 15V –15V 2kΩ THD+N vs Frequency = 600Ω ...

Page 6

IMD vs Output Voltage V = 15V –15V PSRR+ vs Frequency V = 15V 2kΩ RIPPLE CMRR vs Frequency V = 15V –15V ...

Page 7

Output Voltage vs Supply Voltage R = 2kΩ, THD 20210518 Supply Current vs Supply Voltage R = 2kΩ, THD 20210507 Gain Phase vs Frequency 20210551 Output Voltage vs Load Resistance THD Full ...

Page 8

Small-Signal Transient Response 100pF V L www.national.com Large-Signal Transient Response 20210556 100pF V L 20210555 ...

Page 9

Application Information DISTORTION MEASUREMENTS The vanishingly low residual distortion produced by LME49740 is below the capabilities of all commercially avail- able equipment. This makes distortion measurements just slightly more difficult than simply connecting a distortion me- ter to the amplifier’s ...

Page 10

Application Hints The LME49740 is a high speed op amp with excellent phase margin and stability. Capacitive loads up to 100pF will cause little change in the phase characteristics of the amplifiers and are therefore allowable. Noise Measurement Circuit Complete ...

Page 11

Typical Applications NAB Preamp kHz = 0.38 μ Weighted Balanced to Single Ended Converter V = V1–V2 O NAB Preamp Voltage Gain vs Frequency V = 10mV 20210530 ...

Page 12

Second Order High Pass Filter (Butterworth) Illustration kHz 0 www.national.com Second Order Low Pass Filter 20210535 Illustration kHz 0 State Variable Filter 12 (Butterworth) 20210536 20210537 ...

Page 13

Channel Panning Circuit (Pan Pot) AC/DC Converter Line Driver 20210539 Tone Control 13 20210538 20210540 20210541 www.national.com ...

Page 14

0.33 μ S kHz A Weighted A Weighted kHz www.national.com 20210542 RIAA Preamp 14 20210503 ...

Page 15

Illustration is 101(V2 − V1) Balanced Input Mic Amp 15 20210543 www.national.com ...

Page 16

... Note 10: At volume of change = ±12 dB    1.7    Reference: “AUDIO/RADIO HANDBOOK”, National Semiconductor, 1980, Page 2–61 www.national.com 10 Band Graphic Equalizer fo (Hz 0.12μF 4.7μF 32 75kΩ 0.056μF 3.3μF 64 68kΩ 0.033μF 1.5μF 125 62kΩ ...

Page 17

Revision History Rev 1.0 1.01 Date Description 02/28/07 Initial WEB release. Fixed the captions on the LME4970MA package (from Dual-In- 02/08/08 Line to Molded Package (SO). 17 www.national.com ...

Page 18

Physical Dimensions www.national.com inches (millimeters) unless otherwise noted Molded Package (SO) Order Number LME49740MA NS Package Number M14A Dual-In-Line Package Order Number LME49740NA NS Package Number N14A 18 ...

Page 19

19 www.national.com ...

Page 20

... For more National Semiconductor product information and proven design tools, visit the following Web sites at: Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock Conditioners www.national.com/timing Data Converters www.national.com/adc Displays www.national.com/displays Ethernet www.national.com/ethernet Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www ...

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