LM4924SD National Semiconductor, LM4924SD Datasheet
LM4924SD
Specifications of LM4924SD
Available stocks
Related parts for LM4924SD
LM4924SD Summary of contents
Page 1
... LM4924. Boomer audio power amplifiers are designed specif- ically to use few external components and provide high quality output power in a surface mount packages. Typical Application Boomer® registered trademark of National Semiconductor Corporation. © 2009 National Semiconductor Corporation LM4924 Key Specifications ■ ...
Page 2
... Connection Diagrams MSOP Package Top View Order Number LM4924MM See NS Package Number MUB10A for MSOP SD Package Top View Order Number LM4924SD See NS Package Number SDA10A www.national.com 20121058 Bottom Line - Part Number 20121052 2 MSOP Marking 20121006 Z- Plant Code X - Date Code T - Die Traceability ...
Page 3
Typical Connections FIGURE 2. Typical OCL Output Configuration Circuit 20121059 3 www.national.com ...
Page 4
... 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 2) ESD Susceptibility(Note 3) ESD Susceptibility on pin 7, 8, and 9 (Note 3) ESD Susceptibility (Note 4) Junction Temperature ...
Page 5
Symbol Parameter PSRR Power Supply Rejection Ratio Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, but do not guarantee specific performance limits. Electrical ...
Page 6
Typical Performance Characteristics THD+N vs Frequency V = 1.8V 5mW THD+N vs Frequency V = 3.0V 10mW www.national.com = 16Ω 20121013 = 16Ω 20121015 6 THD+N ...
Page 7
THD+N vs Output Power = 16Ω 1kHz V = 1.8V 20121017 THD+N vs Output Power = 16Ω 1kHz V = 3.0V 20121019 THD+N vs Output Power = 32Ω ...
Page 8
Power Supply Rejection Ratio V = 1.8V Vripple = 200mVp-p, Input Terminated into 10Ω load Noise Floor V = 1.8V www.national.com = 16Ω, Vripple = 200mVp-p, Input Terminated into 10Ω load 20121011 = 16Ω ...
Page 9
Channel Sepration = 16Ω Output Power vs Supply Voltage = 16Ω, from top to bottom THD+N = 10%; THD Output Power vs Load Resistance f = 1kHz. from top to bottom 3.0V, ...
Page 10
Power Dissipation vs Output Power V = 1.8V 1kHz, from top to bottom 16Ω Supply Current vs Supply Voltage www.national.com V = 32Ω 20121024 20121026 10 Power Dissipation vs Output Power = ...
Page 11
Application Information ELIMINATING OUTPUT COUPLING CAPACITORS Typical single-supply audio amplifiers that drive single-ended (SE) headphones use a coupling capacitor on each SE out- put. This output coupling capacitor blocks the half-supply voltage to which the output amplifiers are typically biased ...
Page 12
The trigger point is 0.4V (max) for a logic-low level, and 1.5V (min) for a logic-high level. The low 0.1µA (typ) shutdown current is achieved by applying a voltage that is as ...
Page 13
The result is π 1/(2 *20kΩ*20Hz) = 0.397µF Use a 0.39µF capacitor, the closest standard value. The high frequency pole is determined by the product of the desired frequency pole and the differential gain HIGHER GAIN ...
Page 14
The LM4924 is unity-gain stable and requires no external components besides gain-setting resistors, input coupling ca- pacitors, and proper supply bypassing in the typical applica- tion. However very large closed-loop differential gain is required, a feedback capacitor (C ...
Page 15
PCB LAYOUT GUIDELINES This section provides practical guidelines for mixed signal PCB layout that involves various digital/analog power and ground traces. Designers should note that these are only "rule-of-thumb" recommendations and the actual results will depend heavily on the final ...
Page 16
... Physical Dimensions www.national.com inches (millimeters) unless otherwise noted MSOP Package Order Number LM4924MM NS Package Number MUB10A SD Package Order Number LM4924SD NS Package Number SDA10A 16 ...
Page 17
Notes 17 www.national.com ...
Page 18
... 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 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 ...