LME49726MY/NOPB National Semiconductor, LME49726MY/NOPB Datasheet

IC AMP AUDIO STER AB HIFI 8MSOP

LME49726MY/NOPB

Manufacturer Part Number
LME49726MY/NOPB
Description
IC AMP AUDIO STER AB HIFI 8MSOP
Manufacturer
National Semiconductor
Datasheet

Specifications of LME49726MY/NOPB

Amplifier Type
Audio
Number Of Circuits
2
Slew Rate
3.7 V/µs
Gain Bandwidth Product
6.25MHz
Current - Input Bias
0.2pA
Voltage - Input Offset
500µV
Current - Supply
700µA
Current - Output / Channel
350mA
Voltage - Supply, Single/dual (±)
2.5 V ~ 5.5 V, ±1.25 V ~ 2.75 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-MSOP Exposed Pad, 8-HMSOP, 8-eMSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Output Type
-
-3db Bandwidth
-
Other names
LME49726MYTR
© 2010 National Semiconductor Corporation
High Current, Low Distortion, Rail-to-Rail Output
Audio Operational Amplifier
General Description
The LME49726 is a low distortion, low noise rail-to-rail output
audio operational amplifier optimized and fully specified for
high performance, high fidelity applications. The LME49726
delivers superior audio signal amplification for outstanding
audio performance. The LME49726 has a very low THD+N to
easily satisfy demanding audio applications. To ensure that
the most challenging loads are driven without compromise,
the LME49726 provides output current greater than 300mA
at 5V. Further, dynamic range is maximized by an output
stage that drives 2kΩ loads to within 4mV of either power
supply voltage.
The LME49726 has a supply range of 2.5V to 5.5V. Over this
supply range the LME49726’s input circuitry maintains excel-
lent common-mode and power supply rejection, as well as
maintaining its low input bias current. The LME49726 is unity
gain stable.
Key Specifications
■ 
■ 
■ 
■ 
f
(V
(V
(f = 10k, A-weighted)
at 5V
IN
Power Supply Voltage Range
Quiescent Current per Amplifier
THD+N, A
Equivalent Input Noise
OUT
OUT
= 1kHz, R
= 3.5V
= 1.5V
V
= 1,
L
P-P
P-P
= 10kΩ
, V
, V
DD
DD
= 5.0V)
= 2.5V)
FIGURE 1. Inverting Configuration Split Supplies
300386
6.9nV/
0.00008% (typ)
0.00002% (typ)
2.5V to 5.5V
0.7mA (typ)
Hz (typ)
LME49726
Features
Applications
■ 
■ 
■ 
■ 
■ 
■ 
Rail-to-rail output
Easily drives 2kΩ loads to within 4mV of each power
supply voltage rail
Optimized for superior audio signal fidelity
Output short circuit protection
High output drive (>300mA)
Available in mini-SOIC exposed-DAP package
Portable audio amplification
Preamplifiers and multimedia
Equalization and crossover networks
Line drivers and receivers
Active filters
DAC I–V converter gain stage
ADC front-end signal conditioning
Slew Rate
Gain Bandwidth Product
Open Loop Gain (R
Input Bias Current
Input Offset Voltage
PSRR (DC)
300386p6
L
= 10kΩ)
±3.7V/μs (typ)
6.25MHz (typ)
www.national.com
May 25, 2010
120dB (typ)
0.5mV (typ)
104dB (typ)
0.2pA (typ)

Related parts for LME49726MY/NOPB

LME49726MY/NOPB Summary of contents

Page 1

... P 1. 2.5V) OUT P-P DD ■  Equivalent Input Noise (f = 10k, A-weighted) © 2010 National Semiconductor Corporation LME49726 ■  Slew Rate ■  Gain Bandwidth Product ■  Open Loop Gain (R ■  Input Bias Current ■  Input Offset Voltage ■ ...

Page 2

Typical Connection, Pinout, and Package Marking Package Drawing Order Number Package MSOP EXPOSE LME49726MY PAD MSOP EXPOSE LME49726MYX PAD www.national.com FIGURE 2. Inverting Configuration Single Supply Order Number LME49726MY See NS Package Number MUY08A Package Marking 300386x7 Z = Assembly ...

Page 3

... Absolute Maximum Ratings 2) 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 SS Output Short Circuit (Note 3) Power Dissipation Electrical Characteristics (V the circuit shown in Figure ...

Page 4

Symbol Parameter V Maximum Output Voltage Swing OUTSWING I Output Current OUT I Quiescent Current per Amplifier S Note 1: Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur, including inoperability and degradation of device reliability ...

Page 5

Typical Performance Characteristics THD+N vs Output Voltage V = 1.25V –1.25V – 1kHz 22–22kHz V THD+N vs Output Voltage V = 1.25V –1.25V ...

Page 6

THD+N vs Output Voltage V = 2.50V –2.50V – 1kHz 22–22kHz V THD+N vs Output Voltage V = 2.75V –2.75V –1, f ...

Page 7

PSRR+ vs Frequency V = 1.25V –1.25V 200mV DD SS RIPPLE Input terminated 22–80kHz PSRR+ vs Frequency V = 2.50V –2.50V 200mV DD EE RIPPLE Input terminated 22–80kHz ...

Page 8

Output Voltage vs Supply Voltage = 600Ω 1kHz, THD 22–80kHz Crosstalk vs Frequency V = 2.50V –2.50V – 1kHz 80kHz ...

Page 9

Application Information DISTORTION MEASUREMENTS The vanishingly low residual distortion produced by LME49726 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

Figure 5 shows the typical connection for a dual supply in- verting amplifier. The output voltage is centered on zero. FIGURE 5. Dual Supply Inverting Configuration www.national.com Figure 6 shows the typical connection for the Buffer Amplifier or also called ...

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 ...

Page 12

Second Order High Pass Filter (Butterworth) Illustration kHz 0 Illustration kHz 10 www.national.com Second Order Low Pass Filter 300386n9 Illustration kHz ...

Page 13

Channel Panning Circuit (Pan Pot) Illustration is Hz 320 =11 kHz 1.1 kHz H HB 300386o3 Tone Control 300386o5 13 Line Driver 300386o4 300386o6 www.national.com ...

Page 14

0.33 μ S kHz A Weighted A Weighted kHz Illustration is 101(V2 − V1) www.national.com RIAA ...

Page 15

... Note 8: At volume of change = ±12 dB    1.7    Reference: “AUDIO/RADIO HANDBOOK”, National Semiconductor, 1980, Page 2–61 10 Band Graphic Equalizer 0.12μF 4.7μF 32 75kΩ 0.056μF 3.3μF 64 68kΩ 0.033μF 1.5μF 62kΩ ...

Page 16

LME49726 Bill of Materials Description Ceramic Capacitor 0.1uF, 10%, 50V 0805 SMD Tantalum Capacitor 2.2uF,10%, 20V, A-size Tantalum Capacitor 10uF,10%, 20V, B-size Resistor 0Ω, 1/8W 1% 0805 SMD Header, 2-Pin Header, 3-Pin Resistor 10kΩ, 1/8W 1% 0805 SMD Dual Rail-to-Rail ...

Page 17

LME49726 Board Circuit 17 www.national.com ...

Page 18

LME49726 Demo Board Views www.national.com 30038641 Top Silkscreen 300386x9 Top Layer 18 ...

Page 19

Bottom Layer 19 www.national.com ...

Page 20

Revision History Rev 1.0 1.01 www.national.com Date Description 11/05/08 Initial release. 05/25/10 Increased Operating Temperature Range. 20 ...

Page 21

Physical Dimensions inches (millimeters) unless otherwise noted Mini-SOIC Exposed-DAP Package Order Number LME49726MY NS Package Number MUY08A 21 www.national.com ...

Page 22

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

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