LM4675SD/NOPB National Semiconductor, LM4675SD/NOPB Datasheet
LM4675SD/NOPB
Specifications of LM4675SD/NOPB
LM4675SDTR
Available stocks
Related parts for LM4675SD/NOPB
LM4675SD/NOPB Summary of contents
Page 1
... Output short circuit and thermal overload protection prevent the device from damage during fault con- ditions. Boomer® registered trademark of National Semiconductor Corporation. © 2008 National Semiconductor Corporation Key Specifications ■ ...
Page 2
LM4675 Rf Emissions — 6in cable 2 20182721 ...
Page 3
Typical Application FIGURE 1. Typical Audio Amplifier Application Circuit 3 201827j3 www.national.com ...
Page 4
Connection Diagrams 9 Bump micro SMD Package Top View Order Number LM4675TL See NS Package Number TLA09AAA Leadless Leadframe Package (LLP) Top View Order Number LM4675SD See NS Package Number SDA08A www.national.com micro SMD Marking X — Date Code T— ...
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 Susceptibility, all other pins (Note 4) ESD Susceptibility (Note 5) ...
Page 6
Symbol Parameter 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 (Input Referred) OUT Common Mode Rejection Ratio CMRR (Input Referred) T Wake-up Time ...
Page 7
Note 1: All voltages are measured with respect to the ground pin, unless otherwise specified. Note 2: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, ...
Page 8
Typical Performance Characteristics THD + N vs Output Power f = 1kHz THD + N vs Frequency V = 2.5V 100mW OUT THD + N vs Frequency 200mW, R ...
Page 9
THD + N vs Frequency = 4Ω 3.6V 100mW OUT L 20182712 Efficiency vs. Output Power = 4Ω 1kHz R L 20182714 Power Dissipation vs. Output Power = 4Ω 1kHz ...
Page 10
Output Power vs. Supply Voltage = 4Ω 1kHz R L PSRR vs. Frequency 200mV DD RIPPLE Supply Current vs. Supply Voltage No Load www.national.com Output Power vs. Supply Voltage 20182718 = 8Ω , ...
Page 11
Fixed Frequency FFT V = 3.6V DD 20182734 Spread Spectrum FFT 20182735 www.national.com ...
Page 12
Application Information GENERAL AMPLIFIER FUNCTION The LM4675 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 13
While the LM4675 may be disabled with shutdown voltages in between ground and sup- ply, the idle current will be greater than the typical 0.01µA value. The LM4675 has an internal resistor connected between ...
Page 14
FIGURE 3. Differential Input Configuration with Input Capacitors www.national.com FIGURE 2. Differential Input Configuration 14 20182722 20182723 ...
Page 15
FIGURE 4. Dual Differential Input Configuration FIGURE 5. Single-Ended Input Configuration 15 20182724 20182725 www.national.com ...
Page 16
FIGURE 7. Dual Input with a Single-Ended Input and a Differential Input www.national.com FIGURE 6. Dual Single-Ended Input Configuration 16 20182726 20182727 ...
Page 17
REFERENCE DESIGN BOARD SCHEMATIC In addition to the minimal parts required for the application circuit, a measurement filter is provided on the evaluation cir- cuit board so that conventional audio measurements can be conveniently made without additional equipment. This is ...
Page 18
Revision History Rev 1.0 1.1 1.2 1.3 www.national.com Date 08/16/06 Initial release. 09/01/06 Added the uSMD (TL) package. 10/12/06 Text edit (X-axis label Emissions on page 1. 07/02/08 Text edits. 18 Description ...
Page 19
Physical Dimensions inches (millimeters) unless otherwise noted 9 Bump micro SMD Order Number LM4675TL NS Package Number TLA09AAA X1 = 1.514 X2 = 1.514 X3 = 0.600 LLP Order Number LM4675SD NS Package Number SDA08A 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 ...