LM4836MTEX/NOPB National Semiconductor, LM4836MTEX/NOPB Datasheet

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LM4836MTEX/NOPB

Manufacturer Part Number
LM4836MTEX/NOPB
Description
IC AMP AUDIO PWR 2.2W AB 28TSSOP
Manufacturer
National Semiconductor
Series
Boomer®r
Type
Class ABr
Datasheet

Specifications of LM4836MTEX/NOPB

Output Type
2-Channel (Stereo) with Stereo Headphones
Max Output Power X Channels @ Load
2.2W x 2 @ 3 Ohm; 95mW x 2 @ 32 Ohm
Voltage - Supply
2.7 V ~ 5.5 V
Features
Bass Boost, Depop, Input Multiplexer, Mute, Shutdown, Thermal Protection, Volume Control
Mounting Type
Surface Mount
Package / Case
28-TSSOP Exposed Pad, 28-eTSSOP, 28-HTSSOP
Operational Class
Class-AB
Audio Amplifier Output Configuration
2-Channel Stereo
Audio Amplifier Function
Headphone/Speaker
Total Harmonic Distortion
0.3@8Ohm@1W%
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
74dB
Single Supply Voltage (min)
2.7V
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
28
Package Type
TSSOP EP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
*LM4836MTEX
*LM4836MTEX/NOPB
LM4836MTEX

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LM4836MTEX/NOPB
Manufacturer:
AMIS
Quantity:
6 236
Part Number:
LM4836MTEX/NOPB
Manufacturer:
Texas Instruments
Quantity:
12 856
© 2004 National Semiconductor Corporation
LM4836
Stereo 2W Audio Power Amplifiers
with DC Volume Control, Bass Boost, and Input Mux
General Description
The LM4836 is a monolithic integrated circuit that provides
DC volume control, and stereo bridged audio power amplifi-
ers capable of producing 2W into 4Ω (Note 1) with less than
1.0% THD+N, or 2.2W into 3Ω (Note 2) with less than 1.0%
THD+N.
Boomer
to provide high quality audio while requiring a minimum
amount of external components. The LM4836 incorporates a
DC volume control, stereo bridged audio power amplifiers,
selectable gain or bass boost, and an input mux making it
optimally suited for multimedia monitors, portable radios,
desktop, and portable computer applications.
The LM4836 features an externally controlled, low-power
consumption shutdown mode, and both a power amplifier
and headphone mute for maximum system flexibility and
performance.
Note 1: When properly mounted to the circuit board, the LM4836LQ and
LM4836MTE will deliver 2W into 4Ω. The LM4836MT will deliver 1.1W into
8Ω. See the Application Information section for LM4836LQ and LM4836MTE
usage information.
Note 2: An LM4836LQ and LM4836MTE that have been properly mounted
to the circuit board and forced-air cooled will deliver 2.2W into 3Ω.
Connection Diagrams
Boomer
See NS Package LQA028AA for Exposed-DAP LLP
®
is a registered trademark of NationalSemiconductor Corporation.
®
audio integrated circuits were designed specifically
Order Number LM4836LQ
LLP Package
Top View
DS101088
10108883
Key Specifications
n P
n into 3Ω (LM4836LQ, LM4836MTE)
n into 4Ω (LM4836LQ, LM4836MTE)
n into 8Ω (LM4836)
n Single-ended mode - THD+N at 85mW into
n Shutdown current
Features
n PC98 and PC99 Compliant
n DC Volume Control Interface
n Input mux
n System Beep Detect
n Stereo switchable bridged/single-ended power amplifiers
n Selectable internal/external gain and bass boost
n “Click and pop” suppression circuitry
n Thermal shutdown protection circuitry
Applications
n Portable and Desktop Computers
n Multimedia Monitors
n Portable Radios, PDAs, and Portable TVs
32Ω
configurable
See NS Package MTC28 for TSSOP or MXA28A for
O
at 1% THD+N
Order Number LM4836MT or LM4836MTE
Exposed-DAP TSSOP
TSSOP Package
Top View
www.national.com
10108802
June 2002
0.2µA(typ)
2.2W(typ)
2.0W(typ)
1.1W(typ)
1.0%(typ)

Related parts for LM4836MTEX/NOPB

LM4836MTEX/NOPB Summary of contents

Page 1

... Connection Diagrams LLP Package Top View Order Number LM4836LQ See NS Package LQA028AA for Exposed-DAP LLP Boomer ® registered trademark of NationalSemiconductor Corporation. © 2004 National Semiconductor Corporation Key Specifications THD into 3Ω (LM4836LQ, LM4836MTE) n into 4Ω (LM4836LQ, LM4836MTE) n into 8Ω (LM4836) n Single-ended mode - THD+N at 85mW into 32Ω ...

Page 2

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage Storage Temperature Input Voltage Power Dissipation (Note 13) ESD Susceptibility (Note 14) ESD Susceptibility (Note 15) Junction Temperature Soldering Information Vapor Phase (60 sec.) Infrared (15 sec.) See AN-450 “ ...

Page 3

Electrical Characteristics for Single-Ended Mode Operation (Notes 8, 12) The following specifications apply for V Symbol Parameter SNR Signal to Noise Ratio X Channel Separation talk Electrical Characteristics for Bridged Mode Operation (Notes 8, 12) The following specifications apply for ...

Page 4

www.national.com 4 ...

Page 5

Truth Table for Logic Inputs Mute Mux Control Note 18: If system beep is detected on the Beep in pin (pin 11) and beep is fed to inputs, the system ...

Page 6

Typical Performance Characteristics MTE Specific Characteristics LM4836MTE Power Dissipation vs Output Power LM4836MTE (Note 19) Power Derating Curve Note 19: These curves show the thermal dissipation ability of the LM4836MTE at different ambient temperatures given these conditions: 2 500LFPM + ...

Page 7

Typical Performance Characteristics Non-MTE Specific Characteristics THD+N vs Frequency THD+N vs Frequency THD+N vs Frequency 10108857 10108814 10108816 7 THD+N vs Frequency 10108858 THD+N vs Frequency 10108815 THD+N vs Frequency 10108817 www.national.com ...

Page 8

Typical Performance Characteristics Non-MTE Specific Characteristics THD+N vs Frequency THD+N vs Frequency THD+N vs Frequency www.national.com (Continued) THD+N vs Frequency 10108818 THD+N vs Frequency 10108820 THD+N vs Output Power 10108822 8 10108819 10108821 10108824 ...

Page 9

Typical Performance Characteristics Non-MTE Specific Characteristics THD+N vs Output Power THD+N vs Output Power THD+N vs Output Power (Continued) THD+N vs Output Power 10108825 THD+N vs Output Power 10108827 THD+N vs Output Power 10108829 9 10108826 10108828 10108830 www.national.com ...

Page 10

Typical Performance Characteristics Non-MTE Specific Characteristics THD+N vs Output Power THD+N vs Output Power THD+N vs Output Voltage Docking Station Pins www.national.com (Continued) THD+N vs Output Power 10108831 THD+N vs Output Power 10108833 THD+N vs Output Voltage Docking Station Pins ...

Page 11

Typical Performance Characteristics Non-MTE Specific Characteristics Output Power vs Load Resistance Output Power vs Load Resistance Dropout Voltage (Continued) 10108862 10108807 10108853 11 Output Power vs Load Resistance 10108806 Power Supply Rejection Ratio 10108838 Output Power vs Load Resistance 10108808 ...

Page 12

Typical Performance Characteristics Non-MTE Specific Characteristics Noise Floor Volume Control Characteristics Power Dissipation vs Output Power www.national.com (Continued) 10108841 10108810 10108852 12 Noise Floor 10108842 Power Dissipation vs Output Power 10108851 External Gain/ Bass Boost Characteristics 10108861 ...

Page 13

Typical Performance Characteristics Non-MTE Specific Characteristics Power Derating Curve Crosstalk Output Power vs Supply Voltage (Continued) 10108863 10108850 10108856 13 Crosstalk 10108849 Output Power vs Supply voltage 10108854 Supply Current vs Supply Voltage 10108809 www.national.com ...

Page 14

Typical Performance Characteristics Output Power vs Load Resistance Output Power vs Load Resistance Dropout Voltage www.national.com 10108862 10108807 10108853 14 Output Power vs Load Resistance 10108806 Power Supply Rejection Ratio 10108838 Output Power vs Load Resistance 10108808 ...

Page 15

Typical Performance Characteristics Noise Floor Volume Control Characteristics Power Dissipation vs Output Power (Continued) 10108841 10108810 10108852 15 Noise Floor 10108842 Power Dissipation vs Output Power 10108851 External Gain/ Bass Boost Characteristics 10108861 www.national.com ...

Page 16

Typical Performance Characteristics Power Derating Curve Crosstalk Output Power vs Supply Voltage www.national.com (Continued) 10108863 10108850 10108856 16 Crosstalk 10108849 Output Power vs Supply voltage 10108854 Supply Current vs Supply Voltage 10108809 ...

Page 17

Application Information EXPOSED-DAP PACKAGE PCB MOUNTING CONSIDERATIONS The LM4836’s exposed-DAP (die attach paddle) packages (MTE and LQ) provide a low thermal resistance between the die and the PCB to which the part is mounted and soldered. This allows rapid heat ...

Page 18

Application Information However, a direct consequence of the increased power de- livered to the load by a bridge amplifier is higher internal power dissipation for the same conditions. The LM4836 has two operational amplifiers per channel. The maximum internal power ...

Page 19

Application Information the pop is directly proportional to the input capacitor’s size. Higher value capacitors need more time to reach a quiescent DC voltage (usually V /2) when charged with a fixed cur- DD rent. The amplifier’s output charges the ...

Page 20

Application Information accommodate this system alert signal, the LM4836’s pin mono input that accepts the beep signal. Internal level detection circuitry at this input monitors the beep signal’s magnitude. When a signal level greater than V tected ...

Page 21

Application Information FIGURE 3. Headphone Sensing Circuit BASS BOOST FUNCTION The LM4836 has a bass-boost feature that enhances the low frequency response in applications using small speakers. The voltage level applied to the BASS BOOST SELECT pin controls the bass-boost ...

Page 22

Application Information The Output Power vs Supply Voltage graph for an 8Ω load indicates a minimum supply voltage of 4.6V. This is easily met by the commonly used 5V supply voltage. The additional voltage creates the benefit of headroom, allowing ...

Page 23

Application Information FIGURE 4. Recommended LQ PC Board Layout: FIGURE 5. Recommended LQ PC Board Layout: (Continued) Component-Side Silkscreen Component-Side Layout 23 10108878 10108879 www.national.com ...

Page 24

Application Information www.national.com (Continued) FIGURE 6. Recommended LQ PC Board Layout: Upper Inner-Layer Layout FIGURE 7. Recommended LQ PC Board Layout: Lower Inner-Layer Layout 24 10108880 10108881 ...

Page 25

Application Information FIGURE 8. Recommended LQ PC Board Layout: (Continued) Bottom-Side Layout 25 10108882 www.national.com ...

Page 26

Physical Dimensions NS Package Number LQA028A for Exposed-DAP LLP www.national.com inches (millimeters) unless otherwise noted LLP Package Order Number LM4836LQ 26 ...

Page 27

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) NS Package Number MXA28A for Exposed-DAP TSSOP TSSOP Package Order Number LM4836MT NS Package Number MTC28 for TSSOP Exposed-DAP TSSOP Package Order Number LM4836MTE 27 www.national.com ...

Page 28

... BANNED SUBSTANCE COMPLIANCE National Semiconductor certifies that the products and packing materials meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2. ...

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