封装管脚图
产品描述
The SGM4809 is a dual audio power amplifier capable of delivering 158mW per channel of continuous average power with less than 0.1% distortion （ THD+N ） when it drives a 16Ω speaker from a 5.0V power supply. 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.
SGM4809 features an externally controlled, active-low, micro-power consumption shutdown mode, as well as an internal thermal shutdown protection mechanism.
SGM4809 does not require bootstrap capacitors or snubber networks. It is optimally suited for low-power portable systems.
For maximum flexibility, the SGM4809 provides an externally controlled gain (with resistors), as well as an externally controlled turn-on time (with the bypass capacitor).
The SGM4809 is available in Green MSOP-8 package. It operates over an ambient temperature range of -40°C to +85°C.
产品特性
Active-Low Shutdown Mode
158mW into 16Ω Load from 5V Power Supply at THD+N = 0.1% Typical (per Channel)
87mW into 32Ω Load from 5V Power Supply at THD+N = 0.1% Typical (per Channel)
Unity Gain Stable
Shutdown Current: 0.6μA (TYP)
2.5V to 5.5V Operation
Shutdown Pin is Compatible with 1.8V Logic
Click and Pop Reduction Circuitry
-40°C to + 85°C Operating Temperature Range
Green MSOP-8 Package