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SGM4890

Shengbang Microelectronics
Part Number SGM4890
Manufacturer Shengbang Microelectronics
Description 1.1 Watt Audio Power Amplifier
Published Jul 7, 2008
Detailed Description SGM4890 GENERAL DESCRIPTION The SGM4890 is a 1.1-W, fully integrated, audio power amplifier. It is designed to maximize ...
Datasheet PDF File SGM4890 PDF File

SGM4890
SGM4890

Overview
SGM4890 GENERAL DESCRIPTION The SGM4890 is a 1.
1-W, fully integrated, audio power amplifier.
It is designed to maximize audio performance in portable applications such as mobile phone.
The portable application requires audio power amplifier has minimum of external components and can operate from a single 2.
5V to 5.
5V power supply.
SGM4890 is capable www.
DataSheet4U.
com of delivering 1.
1W of continuous output power with less than 1% distortion£¨ THD + N£© when it drives an 8Ω speaker from a 5.
0V power supply.
The SGM4890 features a low-power consumption shutdown mode, which is achieved by driving the shutdown pin with a logic low.
Additionally, the SGM4890 features an internal thermal shutdown protection mechanism.
The SGM4890 does not require capacitors or bootstrap capacitors, ideally suited for mobile phone and applications where minimal power primary requirement.
output coupling and therefore is other low voltage consumption is a 1.
1 Watt Audio Power Amplifier FEATURES • Ideal for Notebook Computers, PDAs, and Other Small Portable Audio Devices • 1.
1W to 8-Ω BTL Load from 5V Supply at THD =1% (Typical) • Excellent PSRR: Direct Connection to the Battery • Fast Turn On Time • Unity Gain Stable • 2.
5V to 5.
5V Operation • Shutdown Current: 0.
01µA Typical • Shutdown Pin is Compatible with 1.
8V Logic • –40¡æ to +85¡æ Operating Temperature Range • Small Packaging PIN CONFIGURATIONS (Top View) A B C -IN VO1 +IN For maximum flexibility, the SGM4890 provides an externally controlled gain (with resistors), as well as an externally controlled turn-on time (with the bypass capacitor).
When using a 1µF bypass capacitor, it offers 110ms wake up time when V+ is equal to 5.
0V.
The SGM4890 is available in CSP-9 and MSOP-8 packages.
It operates over an ambient temperature range of –40¡æ to +85¡æ .
GND GND V+ Bypass VO2 SHDN 1 2 CSP-9 3 APPLICATIONS Portable Systems MP3 Players Mobile Phone PDAs GPS SHDN 1 2 3 4 8 VO2 Bypass 7 6 5 GND +IN V+ -IN VO1 MSOP-...


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