|
|
PDF LM48824 Data sheet ( Hoja de datos )
| Número de pieza | LM48824 | |
| Descripción | Class G Headphone Amplifier | |
| Fabricantes | National Semiconductor Corporation | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de LM48824 (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
|
No Preview Available !
LM48824
March 26, 2009
PRODUCT BRIEF
Class G Headphone Amplifier with I2C Volume Control
www.daGtasehneeet4ru.acolmDescription
Key Specifications
The LM48824 is a Class G, ground-referenced stereo head-
phone amplifier designed for portable devices. The LM48824
■ Quiescent Power Supply Current at 3.6V
0.9mA (typ)
features National’s ground-referenced architecture, which
eliminates the large DC blocking capacitors required by tra-
ditional headphone amplifiers, saving board space and mini-
■ Output Power/channel at VDD = 3.6V
RL = 16Ω, THD+N ≤ 1%
mizing system cost.
■ Output Power/channel at VDD = 3.6V
The LM48824 takes advantage of National’s patent-pending
RL = 32Ω, THD+N ≤ 1%
Class G architecture offering power savings compared to a
traditional Class AB headphone amplifier. Additionally, output
■ PSRR at 217Hz
37mW (typ)
29mW (typ)
100dB (typ)
noise is improved by common-mode sensing that corrects for ■ Shutdown current
any differences between the amplifier ground and the poten-
2.5μA (typ)
tial at the headphone return terminal, minimizing noise creat-
ed by any ground mismatches.
A high output impedance mode allows the LM48824's outputs
Features
■ Class G Power Savings
to be driven by an external source without degrading the sig- ■ Ground Referenced Headphone Outputs – Eliminates
nal. Other features include flexible power supply require-
Output Coupling Capacitors
ments, differential inputs for improved noise rejection, a low
power (2.5μA) shutdown mode, and a 32-step I2C volume
control with mute function.
The LM48824's superior click and pop suppression eliminates
audible transients on power-up/down and during shutdown.
The LM48824 is available in an ultra-small 16-bump, 0.4mm
■ Common-Mode Sense
■ I2C Volume and Mode Control
■ High Output Impedance in Shutdown
■ Differential Inputs
■ Advanced Click-and-Pop Suppression
pitch micro SMD package (1.69mm x 1.69mm)
■ Low Supply Current
Notice: This document is not a full datasheet. For more
information regarding this product or to order samples
please contact your local National Semiconductor sales
office or visit http://www.national.com/support/dir.html
■ Low THD mode option
Applications
■ Mobile Phones, PDAs, MP3 Players
■ Portable Electronic Devices, Notebook PCs
Simplified Block Diagram
Boomer® is a registered trademark of National Semiconductor Corporation.
© 2009 National Semiconductor Corporation 300892
30089221
www.national.com
1 page  
Physical Dimensions inches (millimeters) unless otherwise noted
www.datasheet4u.com
16 – Bump micro SMD
Order Number LM48824TM
NS Package Number TMD16DDA
X1 = 1690μm X2 = 1690μm X3 = 600μm
5 www.national.com
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet LM48824.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| LM4882 | 250mW Audio Power Amplifier with Shutdown Mode |  National Semiconductor |
| LM4882 | LM4882 250mW Audio Power Amplifier with Shutdown Mode (Rev. D) |  Texas Instruments |
| LM48820 | LM48820 Ground-Ref Ultra Low Noise Fixed Gain 95mW Stereo Headphone Amp (Rev. B) | Texas Instruments |
| LM48820 | 95mW Stereo Headphone Amplifier | National Semiconductor |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |