 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
LM4873 Datasheet(PDF) 1 Page - National Semiconductor (TI) |
|
|
|
|||||||||||||||||||||||||||||
LM4873 Datasheet(HTML) 1 Page - National Semiconductor (TI) |
|
|
1 / 25 page  LM4873 Dual 2.1W Audio Amplifier Plus Stereo Headphone Function General Description The LM4873 is a dual bridge-connected audio power ampli- fier which, when connected to a 5V supply, will deliver 2.1W toa4 Ω load (Note 1) or 2.4W to a 3Ω load (Note 2) with less than 1.0% THD+N. In addition, the headphone input pin allows the amplifiers to operate in single-ended mode when driving stereo headphones. A MUX control pin allows selec- tion between the two stereo sets of amplifier inputs. The MUX control can also be used to select two different closed-loop responses. Boomer audio power amplifiers were designed specifically to provide high quality output power from a surface mount package while requiring few external components. To sim- plify audio system design, the LM4873 combines dual bridge speaker amplifiers and stereo headphone amplifiers on one chip. The LM4873 features an externally controlled, low-power consumption shutdown mode, a stereo headphone amplifier mode, and thermal shutdown protection. It also utilizes cir- cuitry to reduce “clicks and pops” during device turn-on. Note 1: An LM4873MTE-1, LM4873MTE, or LM4873LQ that has been properly mounted to a circuit board will deliver 2.1W into 4 Ω. The other package options for the LM4873 will deliver 1.1W into 8 Ω. See the Applica- tion Information sections for further information concerning the LM4873MTE-1, LM4873MTE, and the LM4873LQ. Note 2: An LM4873MTE-1, LM4873MTE, or LM4873LQ that has been prop- erly mounted to a circuit board and forced-air cooled will deliver 2.4W into 3 Ω. Key Specifications j PO at 1% THD+N LM4873LQ, 3 Ω,4Ω loads 2.4W(typ), 2.1W(typ) LM4873MTE-1, 3 Ω,4Ω loads 2.4W(typ), 2.1W(typ) LM4873IBL, 8 Ω load 1.1W(typ) LM4873MTE, 4 Ω 1.9W(typ) LM4873, 8 Ω 1.1W(typ) j Single-ended mode THD+N at 75mW into 32 Ω 0.5%(max) j Shutdown current 0.7µA(typ) j Supply voltage range 2V to 5.5V Features n Input mux control and two separate inputs per channel n Stereo headphone amplifier mode n “Click and pop” suppression circuitry n Thermal shutdown protection circuitry n PCB area-saving micro SMD and thin micro SMD packages n TSSOP and exposed-DAP TSSOP and LLP packages Applications n Multimedia monitors n Portable and desktop computers n Portable audio systems Connection Diagrams 10099330 Top View Order Number LM4873MTE-1 See NS Package Number MXA28A for Exposed-DAP TSSOP 10099302 Top View Order Number LM4873MT, LM4873MTE See NS Package Number MTC20 for TSSOP See NS Package Number MXA20A for Exposed-DAP TSSOP Boomer® is a registered trademark of National Semiconductor Corporation. October 2002 © 2002 National Semiconductor Corporation DS100993 www.national.com |
Similar Part No. - LM4873 |
|
Similar Description - LM4873 |
|
|
|
Link URL |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link to Datasheet | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
