LPA4722A 5V, Differential Input, Direct Drive, 215mW Stereo Headphone Amplifiers with Shutdown Preliminary Datasheet
■The LPA4722A stereo headphone amplifiers are designed for portable equipment where board space is at a premium. The LPA4722A deliver up to 215mW per channel into a 16Ω load or 200mW into a 32Ω load and have low 0.005% THD+N. An 80dB at 217Hz power-supply rejection ratio (PSRR) allows these devices to operate from noisy digital supplies without an additional linear regulator. Comprehensive anticlick-and-pop circuitry suppresses audible clicks and pops on startup and shutdown. A low-power shutdown mode reduces the supply current to 0.1μA.
■The LPA4722A operates from a single 2.5V to 5.5V supply, consumes only 5mA supply current, and is specified over the extended -40 °C to +85 °C temperature range. The devices are available in tiny 16-pin TQFN (3mm✕ 3mm✕0.8mm) packages.
●Features
■2.5V to 5.5V Single-Supply Operation
■High PSRR (80dB at 217Hz) Eliminates LDO
■No Bulky DC-Blocking Capacitors Required
■Ground-Referenced Outputs Eliminate DC Bias Voltage on Headphone Ground Pin
■No Degradation of Low-Frequency Response Due to Output Capacitors
■Differential Inputs for Enhanced Noise Cancellation
■194mW into 32Ω Load from 5V Power Supply at THD+N = 0.1% (TYP, per Channel)
■Low 0.008% THD+N
■Short-Circuit and Thermal-Overload Protection
■Integrated Click-and-Pop Suppression
■Low Quiescent Current (3mA at VDD = 5V)
■Shutdown Control
■Under-Voltage Lockout Function
■-40°C to +85°C Operating Temperature Range
■Available in a Space-Saving 16-Pin TQFN (3mm ✕ 3mm✕ 0.8mm) Package
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stereo headphone amplifiers 、 Differential Input Direct Drive 215mW Stereo Headphone Amplifiers |
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[ MP3 Players ][ Smart Cellular Phones ][ PDAs ][ Portable Audio ][ Notebook ][ Desktop PCs ][ Flat-Panel Monitors ] |
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Datasheet |
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Please see the document for details |
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TQFN-16;TQFN |
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English Chinese Chinese and English Japanese |
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May.-2023 |
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988 KB |
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