The SGM4888 is a dual bridge-connected audio power amplifier which, when connected to a 5V supply, will deliver 2.1W into a 4Ω load or 2.5W into a 3Ω load with typically 1% THD+N.
The SGM4888 has two separate HP (headphone) enable inputs, each having different logic level thresholds. Either HP enable input activates the single-ended headphone mode and disables the BTL output mode. The HP Sense input is for use with a normal stereo headphone jack. The remaining input, HP Logic, accepts standard logic level thresholds.
To simplify audio system design, the SGM4888 combines dual bridge speaker amplifiers and stereo headphone amplifiers on one chip.
The SGM4888 features a low power consumption shutdown mode and thermal shutdown protection. It also utilizes circuitry to reduce “pop/click” during device turn-on.
The SGM4888 is available in a Green TQFN-4×4-24L package. It operates over an ambient temperature range of -40℃ to +85℃.
PO at 1% THD+N, VCC = 5V
RL = 3Ω 2.5W (TYP)
RL = 4Ω 2.1W (TYP)
RL = 8Ω 1.3W (TYP)
Low Shutdown Current 0.02μA
Operation Supply Voltage 2.8V to 5.5V
PSRR at 217Hz 80dB (TYP)
Selectable Headphone Enable Modes
Stereo Headphone Amplifier Mode
Improved “Pop/Click” Suppression Circuitry
Thermal Shutdown Protection Circuitry
-40℃ to +85℃ Operating Temperature Range
Available in a Green TQFN-4×4-24L Package
Cell Phones, PDAs, MP4s, PMPs
Portable and Desktop Computers
Desktops Audio System
|Part Number||Status||Package||Pins||Pb-Free||Temp Range|
|SGM4888YTQF24G/TR||Production||TQFN-4×4-24L||24||Y||-40℃ to +85℃|