LM4819MBD National Semiconductor, LM4819MBD Datasheet
LM4819MBD
Specifications of LM4819MBD
Related parts for LM4819MBD
LM4819MBD Summary of contents
Page 1
... LLP, MSOP, and SO package types to suit various applications. Typical Application FIGURE 1. Typical Audio Amplifier Application Circuit Boomer ® registered trademark of National Semiconductor Corporation. © 2002 National Semiconductor Corporation Key Specifications n THD+N at 1kHz, 350mW continuous average output power into 16 load with 10% ...
Page 2
Connection Diagrams Small Outline (SO) Package Top View Order Number LM4819M See NS Package Number M08A Mini Small Outline (MSOP) Package Top View Order Number LM4819MM See NS Package Number MUA08A LLP Package Top View Order Number LM4819LD See NS ...
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 Storage Temperature Input Voltage Power Dissipation (P ) (Note 4) D ESD Susceptibility (Note 5) ESD Susceptibility (Note 6) Junction Temperature ( Soldering Information (Note 1) ...
Page 4
Electrical Characteristics V The following specifications apply for V 25˚C. (Continued) Note 1: See AN-450 ’Surface Mounting and their Effects on Product Reliability’ for other methods of soldering surface mount devices. Note 2: All voltages are measured with respect to ...
Page 5
Typical Performance Characteristics THD+N vs Frequency THD+N vs Frequency THD+N vs Output Power (Continued) THD+N vs Frequency DS200136-39 THD+N vs Frequency DS200136-41 THD+N vs Output Power DS200136-43 5 DS200136-40 DS200136-42 DS200136-44 www.national.com ...
Page 6
Typical Performance Characteristics THD+N vs Output Power THD+N vs Output Power Output Power vs Supply Voltage www.national.com (Continued) THD+N vs Output Power DS200136-45 THD+N vs Output Power DS200136-47 Output Power vs Supply Voltage ...
Page 7
Typical Performance Characteristics Output Power vs Supply Voltage Power Dissipation vs Output Power Power Derating Curves (Continued) Output Power vs Load Resistance DS200136-51 Power Dissipation vs Output Power ...
Page 8
Typical Performance Characteristics Supply Current vs Supply Voltage www.national.com (Continued) DS200136-69 8 ...
Page 9
Application Information BRIDGE CONFIGURATION EXPLANATION As shown in Figure 1 , the LM4819 consist of two operational amplifiers. External resistors, R and R i gain of the first amplifier (and the amplifier overall), whereas two internal 20k resistors set the ...
Page 10
Application Information There are a few ways to activate micro-power shutdown. These included using a single-pole, single-throw switch, a microcontroller microprocessor. When using a switch, connect an external 10k to 100k pull-up resistor between the SHUTDOWN pin and ...
Page 11
Application Information In order to eliminate ’clicks and pops’, all capacitors must be discharged before turn-on. Rapidly switching V allow the capacitors to fully discharge, which may cause ’clicks and pops’. AUDIO POWER AMPLIFIER DESIGN EXAMPLE The following are the ...
Page 12
Application Information HIGHER GAIN AUDIO AMPLIFIER The LM4819 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 ...
Page 13
Application Information DIFFERENTIAL AMPLIFIER CONFIGURATION FOR LM4819 (Continued) Figure 3 13 DS200136-29 www.national.com ...
Page 14
Application Information REFERENCE DESIGN BOARD and PCB LAYOUT GUIDELINES www.national.com (Continued) Figure 4 14 DS200136-68 ...
Page 15
Application Information Silk Screen Bottom Layer (Continued) LM4819 SO DEMO BOARD ARTWORK DS200136-62 DS200136-64 15 Top Layer DS200136-63 www.national.com ...
Page 16
Application Information Silk Screen Bottom Layer www.national.com (Continued) LM4819 MSOP DEMO BOARD ARTWORK DS200136-65 DS200136-67 16 Top Layer DS200136-66 ...
Page 17
Application Information Composite View Top Layer (Continued) LM4819 LD DEMO BOARD ARTWORK DS200136-31 DS200136-33 17 Silk Screen DS200136-32 Bottom Layer DS200136-30 www.national.com ...
Page 18
Application Information Mono LM4819 Reference Design Boards Bill of Material for all Demo Boards Item Part Number 1 551011208-001 LM4819 Mono Reference Design Board 10 482911183-001 20 151911207-001 21 151911207-002 25 152911207-001 30 472911207-001 35 210007039-002 PCB LAYOUT GUIDELINES This ...
Page 19
Physical Dimensions inches (millimeters) unless otherwise noted MSOP Order Number LM4819MM NS Package Number MUA08A 19 www.national.com ...
Page 20
Physical Dimensions www.national.com inches (millimeters) unless otherwise noted (Continued) SO Order Number LM4819M NS Package Number M08A 20 ...
Page 21
... NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant ...