LM48411TL/NOPB National Semiconductor, LM48411TL/NOPB Datasheet

IC AMP AUDIO PWR 2.5W D 16USMD

LM48411TL/NOPB

Manufacturer Part Number
LM48411TL/NOPB
Description
IC AMP AUDIO PWR 2.5W D 16USMD
Manufacturer
National Semiconductor
Series
Boomer®, PowerWise®r
Type
Class Dr
Datasheet
1.LM48411TLNOPB.pdf (20 pages)

Specifications of LM48411TL/NOPB

Output Type
2-Channel (Stereo)
Max Output Power X Channels @ Load
2.5W x 2 @ 4 Ohm
Voltage - Supply
2.4 V ~ 5.5 V
Features
Depop, Differential Inputs, E²S, Short-Circuit Protection, Shutdown
Mounting Type
Surface Mount
Package / Case
16-MicroSMD
Operational Class
Class-D
Audio Amplifier Output Configuration
2-Channel Stereo
Output Power (typ)
2.5x2@4OhmW
Audio Amplifier Function
Speaker
Single Supply Voltage (typ)
3/5V
Dual Supply Voltage (typ)
Not RequiredV
Power Supply Requirement
Single
Rail/rail I/o Type
No
Power Supply Rejection Ratio
78dB
Single Supply Voltage (min)
2.4V
Single Supply Voltage (max)
5.5V
Dual Supply Voltage (min)
Not RequiredV
Dual Supply Voltage (max)
Not RequiredV
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
16
Amplifier Class
D
No. Of Channels
1
Output Power
2.5W
Supply Voltage Range
2.4V To 5.5V
Load Impedance
8ohm
Operating Temperature Range
-40°C To +85°C
Amplifier Case Style
SMD
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
LM48411TLTR
© 2008 National Semiconductor Corporation
LM48411
Ultra-Low EMI, Filterless, 2.5W, Stereo, Class D Audio
Power Amplifier with E
General Description
The LM48411 is a single supply, high efficiency, 2.5W/chan-
nel Class D audio amplifier. The LM48411 features National's
Enhanced Emissions Suppression (E
tures a unique patent-pending ultra low EMI, spread spec-
trum, PWM architecture, that significantly reduces RF emis-
sions while preserving audio quality and efficiency. The E
system improves battery life, reduces external component
count, board area consumption, system cost, and simplifying
design.
The LM48411 is designed to meet the demands of mobile
phones and other portable communication devices. Operat-
ing on a single 5V supply, it is capable of delivering 2.5W/
channel of continuous output power to a 4Ω load with less
than 10% THD+N. Its flexible power supply requirements al-
low operation from 2.4V to 5.5V. The wide band spread
spectrum architecture of the LM48411 reduces EMI-radiated
emissions due to the modulator frequency.
The LM48411 features high efficiency compared to a con-
ventional Class AB amplifier. The E
advanced, patent-pending edge rate control (ERC) architec-
ture that further reduce emissions by minimizing the high
frequency component of the device output, while maintaining
high quality audio reproduction and high efficiency (η = 87%
at V
lectable through GAIN0 and GAIN1 pins.
The LM48411 features a low-power consumption shutdown
mode. Shutdown may be enabled by driving the Shutdown
pin to a logic low (GND).
Output short circuit protection prevents the device from being
damaged during fault conditions. Superior click and pop sup-
pression eliminates audible transients on power up/down and
during shutdown. Independent left/right shutdown control
maximizes power savings in mixed mono/stereo applications.
Boomer® is a registered trademark of National Semiconductor Corporation.
DD
= 3.6V, P
O
= 500mW). Four gain options are pin se-
 
2
S system includes an
2
S) system, that fea-
300095
2
S
2
S
Key Specifications
Features
■
■
■
■
■
■
■
■
■
■
Applications
■
■
■
■ 
■ 
■ 
■ 
■ 
■ 
■ 
■ 
E
Efficiency
Output short circuit protection
Stereo Class D Operation
No output filter required for inductive loads
Logic selectable gain
Independent shutdown control
Minimum external components
"Click and pop" suppression circuitry
Micro-power shutdown mode
Available in space-saving 0.5mm pitch micro SMD
package
Mobile phones
PDAs
Portable electronic devices
Efficiency at 3.6V, 500mW into 8Ω
Efficiency at 3.6V, 100mW into 8Ω
Efficiency at 5V, 1W into 8Ω
Quiescent current, 3.6V supply
Power Output at V
Power Output at V
Total shutdown power supply
Single supply range
2
speaker
R
R
S system reduces EMI preserving Audio Quality and
speaker
speaker
current
L
L
= 4Ω, THD
= 8Ω, THD
≤
≤
DD
10%
DD
10%
= 5V
= 5V
www.national.com
0.01µA (typ)
2.4V to 5.5V
4.2mA (typ)
July 3, 2008
2.5W (typ)
1.5W (typ)
87% (typ)
80% (typ)
88% (typ)

Related parts for LM48411TL/NOPB

Image
Part Number
Description
Manufacturer
Datasheet
Request R
LM48411TL
Part Number:
LM48411TL
Description:
Ultra-Low EMI, Filterless, 2.5W, Stereo, Class D Audio Power Amplifier with E2S
Manufacturer:
NSC [National Semiconductor]
Datasheet:
LM48411TL.pdf (18 pages)
LM4841
Part Number:
LM4841
Description:
Stereo 2W Amplifiers with DC Volume Control/ Transient Free Outputs/ and Cap-less Headphone Drive
Manufacturer:
National Semiconductor
Datasheet:
LM4841.pdf (31 pages)
MC1408P8
Part Number:
MC1408P8
Description:
National Semiconductor [8-Bit D/A Converter]
Manufacturer:
National Semiconductor
Datasheet:
MC1408P8.pdf (12 pages)
CS1301
Part Number:
CS1301
Description:
National Semiconductor [Media Coprocessor]
Manufacturer:
National Semiconductor
Datasheet:
CS1301.pdf (25 pages)
LM4832N
Part Number:
LM4832N
Description:
Digitally Controlled Tone and Volume Circuit with Stereo Audio Power Amplifier, Microphone Preamp Stage and National 3D Sound
Manufacturer:
National Semiconductor
Datasheet:
LM4832N.pdf (23 pages)
LM4832M
Part Number:
LM4832M
Description:
Digitally Controlled Tone and Volume Circuit with Stereo Audio Power Amplifier, Microphone Preamp Stage and National 3D Sound
Manufacturer:
National Semiconductor
Datasheet:
LM4832M.pdf (23 pages)
LM4546
Part Number:
LM4546
Description:
AC97 Rev 2 Codec with Sample Rate Conversion and National 3D Sound
Manufacturer:
National Semiconductor
LP2981AIM5X-2.7
Part Number:
LP2981AIM5X-2.7
Description:
Manufacturer:
National Semiconductor
Datasheet:
LP2981AIM5X-2.7.pdf (16 pages)
LP2988AIMMX-3.8
Part Number:
LP2988AIMMX-3.8
Description:
Manufacturer:
National Semiconductor
LP3988IMFX-2.6
Part Number:
LP3988IMFX-2.6
Description:
Manufacturer:
National Semiconductor
Datasheet:
LP3988IMFX-2.6.pdf (11 pages)
LPV321M7X
Part Number:
LPV321M7X
Description:
General Purpose, Low Voltage, Low Power, Rail-to-Rail Output Operational Amplifiers
Manufacturer:
National Semiconductor
Datasheet:
LPV321M7X.pdf (21 pages)
ADC0882CCN
Part Number:
ADC0882CCN
Description:
8-bit 20 MSPS flash A/D converter.
Manufacturer:
National Semiconductor
Datasheet:
ADC0882CCN.pdf (11 pages)
LM837N
Part Number:
LM837N
Description:
Low Noise Quad Operational Amplifier
Manufacturer:
National Semiconductor
Datasheet:
LM837N.pdf (8 pages)
DS3650J
Part Number:
DS3650J
Description:
Quad Differential Line Receivers
Manufacturer:
National Semiconductor
Datasheet:
DS3650J.pdf (8 pages)
DS3662J
Part Number:
DS3662J
Description:
Quad High Speed Trapezoidal? Bus Transceiver
Manufacturer:
National Semiconductor
Datasheet:
DS3662J.pdf (6 pages)

LM48411TL/NOPB Summary of contents

Page 1

... Superior click and pop sup- pression eliminates audible transients on power up/down and during shutdown. Independent left/right shutdown control maximizes power savings in mixed mono/stereo applications. Boomer® registered trademark of National Semiconductor Corporation. © 2008 National Semiconductor Corporation 2 S Key Specifications ■ ...

Page 2

LM48411 RF Emissions www.national.com FIGURE 1. RF Emissions — 3in cable 2 30009586 ...

Page 3

Typical Application FIGURE 2. Typical Audio Amplifier Application Circuit 3 30009501 www.national.com ...

Page 4

Connection Diagrams 16 Bump micro SMD Package Top View Order Number LM48411TL See NS Package Number TLA16ACA Pin Descriptions Bump www.national.com 30009502 Name OUTLB ...

Page 5

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage (Note 1) Storage Temperature Voltage at Any Input Pin V + 0.3V DD Power Dissipation (Note 3) ESD Rating, all other pins (Note 4) ESD Rating (Note 5) ...

Page 6

Symbol Parameter P Output Power O P Output Power O THD+N Total Harmonic Distortion + Noise Power Supply Rejection Ratio PSRR (Input Referred) SNR Signal to Noise Ratio Output Noise ε OUT (Input Referred) Common Mode Rejection Ratio CMRR (Input ...

Page 7

Note 1: “Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur, including inoperability and degradation of device reliability and/or performance. Functional operation of the device and/or non-degradation at the Absolute Absolute Maximum Ratings or other conditions ...

Page 8

THD+N vs Frequency = 4Ω 3.6V 250mW/channel 6dB V THD+N vs Output Power = 8Ω 2.5V THD+N vs Output Power = 8Ω ...

Page 9

THD+N vs Output Power = 8Ω 5V 6dB 30009582 THD+N vs Output Power = 4Ω 2.5V 6dB 30009572 THD+N vs Output Power = 4Ω, ...

Page 10

THD+N vs Output Power = 4Ω 5.0V PSRR vs Frequency V = 3.6V Quiescent Current vs Power Supply ∞ www.national.com = 6dB V 30009580 = 8Ω L 30009568 30009542 ...

Page 11

Output Power vs Supply Voltage = 8Ω 1kHz R L 30009562 Efficiency vs Output Power = 8Ω 30009570 Power Dissipation vs Output Power = 4Ω 30009566 Efficiency vs Output Power = 4Ω ...

Page 12

External Components Description (Figure 2) Components 1. C Supply bypass capacitor which provides power supply filtering. Refer to the Power Supply Bypassing section S for information concerning proper placement and selection of the supply bypass capacitor Input AC ...

Page 13

Application Information GENERAL AMPLIFIER FUNCTION The LM48411 features a filterless modulation scheme. The differential outputs of the device switch at 300kHz from V to GND. When there is no input signal applied, the two outputs (V 1 and V 2) ...

Page 14

SHUTDOWN FUNCTION In order to reduce power consumption while not in use, the LM48411 contains shutdown circuitry that reduces current draw to less than 0.01µA. The trigger point for shutdown is shown as a typical value in the Electrical Characteristics ...

Page 15

Demonstration Board Schematic 15 30009592 www.national.com ...

Page 16

Demonstration Board Layout www.national.com 30009591 Top Silkscreen Layer 30009590 Top Layer 30009588 Mid 1 Layer 16 ...

Page 17

Mid 2 Layer 30009587 Bottom Layer 17 www.national.com ...

Page 18

Revision History Rev Date 1.0 09/21/07 1.1 10/01/07 1.2 11/30/07 1.3 12/19/07 1.4 01/08/08 1.5 06/27/08 1.6 07/03/08 www.national.com Description Initial release. Fixed few typos. Added the demo boards and BOM. Edited the 16–bump micro SMD package diagram and the ...

Page 19

Physical Dimensions inches (millimeters) unless otherwise noted 16 Bump micro SMD Order Number LM48411TL NS Package Number TLA16ACA X1 = 1.996mm X2 = 2.047mm X3 = 0.6mm 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 ...

Related keywords