LM4893MABD National Semiconductor, LM4893MABD Datasheet
LM4893MABD
Specifications of LM4893MABD
Related parts for LM4893MABD
LM4893MABD Summary of contents
Page 1
... The LM4893 is unity-gain stable and can be configured by external gain-setting resistors. Typical Application FIGURE 1. Typical Audio Amplifier Application Circuit Boomer ® registered trademark of National Semiconductor Corporation. © 2004 National Semiconductor Corporation Key Specifications j Improved PSRR at 5V, 3V, & 217Hz j Higher Power Output at 5V & 1% THD j Higher Power Output at 3V & ...
Page 2
Connection Diagrams 9 Bump micro SMD Top View Order Number LM4893ITL, LM4893ITLX See NS Package Number TLA09AAA Small Outline (SO) Package Top View Order Number LM4893MA See NS package Number M08A Mini Small Outline (MSOP) Package Top View NC = ...
Page 3
... 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 9) Storage Temperature Input Voltage Power Dissipation (Note 3) ESD Susceptibility (Note 4) ESD Susceptibility (Note 5) Junction Temperature Thermal Resistance Electrical Characteristics V The following specifications apply for the circuit shown in Figure 1 unless otherwise specified ...
Page 4
Electrical Characteristics V The following specifications apply for the circuit shown in Figure 1 unless otherwise specified. Limits apply for T 25˚C. (Continued) Symbol Parameter N Output Noise OUT Electrical Characteristics V The following specifications apply for the circuit shown ...
Page 5
External Components Description (Figure 1) Components 1. R Inverting input resistance which sets the closed-loop gain in conjunction with R i high pass filter with Input coupling capacitor which blocks the DC voltage at the amplifiers input ...
Page 6
Typical Performance Characteristics THD+N vs Power Out @ V = 5V, 8Ω THD+N vs Power Out @ V = 2.6V, 8Ω www.national.com (Continued) , 1kHz L 20038041 , 1kHz L 20038043 6 THD+N vs Power Out ...
Page 7
Typical Performance Characteristics Power Supply Rejection Ratio (PSRR) Input terminated with 10Ω R Power Supply Rejection Ratio (PSRR) Input terminated with 10Ω R (Continued Power Supply Rejection Ratio (PSRR) DD 20038045 Input terminated with 10Ω R ...
Page 8
Typical Performance Characteristics Power Dissipation vs Output Power V = 3.0V DD Power Derating - MSOP P = 670mW for 5V, 8Ω DMAX www.national.com (Continued) Power Dissipation vs Output Power @ 20038049 Power Derating - SOP P = 670mW for ...
Page 9
Typical Performance Characteristics Power Derating - 9 Bump µSMD P = 670mW for 5V, 8Ω DMAX Output Power vs Supply Voltage (Continued) Output Power vs Supply Voltage 20038081 Output Power vs Load Resistance 20038050 9 20038051 20038074 www.national.com ...
Page 10
Typical Performance Characteristics Clipping (Dropout) Voltage vs Supply Voltage Shutdown Hysterisis Voltage www.national.com (Continued) Supply Current vs Shutdown Voltage 20038052 Shutdown Hysterisis Voltage 20038076 10 20038075 20038077 ...
Page 11
Typical Performance Characteristics Shutdown Hysterisis Voltage V = 2.6V DD Frequency Response vs Input Capacitor Size (Continued) Open Loop Frequency Response 20038078 20038056 11 20038054 www.national.com ...
Page 12
Application Information BRIDGE CONFIGURATION EXPLANATION As shown in Figure 1, the LM4893 has two operational amplifiers internally, allowing for a few different amplifier configurations. The first amplifier’s gain is externally config- urable, while the second amplifier is internally fixed in ...
Page 13
Application Information Selection Of Input Capacitor Size Large input capacitors are both expensive and space hungry for portable designs. Clearly, a certain sized capacitor is needed to couple in low frequencies without severe attenu- ation. But in many cases the ...
Page 14
Application Information The LM4893 is unity-gain stable and requires no external components besides gain-setting resistors, an input coupling capacitor, and proper supply bypassing in the typical appli- cation. However closed-loop differential gain of greater than 10 is required, ...
Page 15
Application Information FIGURE 4. DIFFERENTIAL AMPLIFIER CONFIGURATION FOR LM4893 FIGURE 5. REFERENCE DESIGN BOARD and LAYOUT - micro SMD (Continued) 15 20038089 20038090 www.national.com ...
Page 16
Application Information LM4893 SO BOARD ARTWORK www.national.com (Continued) Silk Screen 20038098 Top Layer Bottom Layer 20038096 16 20038095 ...
Page 17
Application Information FIGURE 6. REFERENCE DESIGN BOARD and PCB LAYOUT GUIDELINES - MSOP & SO Boards (Continued) 17 20038068 www.national.com ...
Page 18
Application Information LM4893 MSOP DEMO BOARD ARTWORK www.national.com (Continued) Silk Screen 20038065 Top Layer Bottom Layer 20038067 18 20038066 ...
Page 19
Application Information Item Part Number 1 551011208-001 LM4893 Mono Reference Design Board 10 482911183-001 LM4893 Audio AMP 20 151911207-001 Tant Cap 1uF 16V 10 21 151911207-002 Cer Cap 0.39uF 50V Z5U 20% 1210 25 152911207-001 Tant Cap 1.0uF 16V 10 ...
Page 20
Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 9-Bump micro SMD Order Number LM4893ITL, LM4893ITLX NS Package Number TLA09AAA ± ± 1.514 0. 1.514 0. ± = 0.60 0.075 3 ...
Page 21
Physical Dimensions inches (millimeters) unless otherwise noted (Continued) SO Order Number LM4893MA NS Package Number M08A 21 www.national.com ...
Page 22
... 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. ...