TPA321DGNR ,350-mW Low-Voltage Audio Power Amp with differential inputsELECTRICAL CHARACTERISTICSat specified free-air temperature, V = 3.3 V, T = 25°C (unless otherwise ..
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TPA321DGN-TPA321DGNR
350-mW Low-Voltage Audio Power Amp with differential inputs
SHUTDOWN
BYPASS
IN+
IN-
D OR DGN PACKAGE
DESCRIPTION
Audio
Input
VO+-
VDD/2 IN+ Wide Power
2.5V– 5.5 Output Power forRL=8Ω
350 mWat VDD=5V 250 mWat VDD= 3.3V Ultralow Supply Currentin Shutdown
Mode... 0.15µA Thermal and Short-Circuit Protection Surface-Mount Packaging SOIC PowerPAD™ MSOPThe TPA321isa bridge-tied load (BTL) audio power amplifier developed especially
where internal speakers are required. Operating witha 3.3-V supply, the
continuous power intoa BTL 8-Ω loadat less than 1% THD+N throughout voice
deviceis characterized outto 20 kHz,its operation was optimized for narrower
communications. The BTL configuration eliminates the need for external coupling
most applications, whichis particularly important for small battery-powered
shutdown mode for power-sensitive applications witha quiescent current
TPA321is availableinan 8-pin SOIC surface-mount package and the surface-mount
reduces board spaceby 50% and heightby 40%.
