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LM49370RL/NOPB ,Boomer Aud Pwr Amp & Sub-Sys w/ an Ultra Low EMI Sprd Spectrum Class D Loudspkr Amp 49-DSBGA -40 to 85features an SNR of 85 dB with an 18-bit 48 kHz input. In SE mode the headphone amplifier delivers a ..
LP2985IM5X-4.7 ,Micropower 150 mA Low-Noise Ultra Low-Dropout Regulator in SOT-23 and micro SMD PackagesApplicationsuse absolute minimum board space.n Cellular PhonePrecision Output: 1% tolerance output ..
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LP2985IM5X-5.0 ,Micropower 150 mA Low-Noise Ultra Low-Dropout Regulator in SOT-23 and micro SMD PackagesFeaturesn Ultra low dropout voltageThe LP2985 is a 150 mA, fixed-output voltage regulatordesigned t ..
LP2985IM5X-5.0 NOPB ,Micropower 150-mA Low-Noise Ultra-Low-Dropout Regulator in SOT-23 and DSBGA Packages 5-SOT-23 -40 to 125Sample & Support & ReferenceProduct Tools &TechnicalCommunityBuy DesignFolder Documents SoftwareLP2 ..
LP2985IM5X-5.3 ,Micropower 150 mA Low-Noise Ultra Low-Dropout Regulator in SOT-23 and micro SMD PackagesApplicationsuse absolute minimum board space.n Cellular PhonePrecision Output: 1% tolerance output ..
LP2985IM5X-6.1 ,Micropower 150 mA Low-Noise Low-Dropout Regulator in SOT-23 and micro SMD packages for Applications with Output Voltages [Less_Than_Or_Equal] ...Applicationswith Output Voltages ≤ 2.3VDesigned for Use with Very Low ESR Output Capacitors
LM4930ITL
Audio Subsystem with Stereo Headphone & Mono Speaker Amplifiers
LM4930
Audio Subsystem with Stereo Headphone & Mono
Speaker Amplifiers
General DescriptionThe LM4930isan integrated audio subsystem that supports
voice and digital audio functions. The LM4930 includesa
high qualityI2S input stereo DAC,a voice band codec,a
stereo headphone amplifier anda high-power mono speaker
amplifier.Itis primarily designedfor demanding applications mobile phones and other portable devices.
The LM4930 featuresanI2S serial interfacefor full range
audio,a 16-bit PCM bi-directional serial interfacefor the
voice band codec andan two-wire interfacefor control. The
full range music path featuresan SNRof 86dB witha 16-bit
48kHz input. The stereo DAC can alsobe used while the
voice codecisin use. The headphone amplifier delivers
25mWRMS toa32Ω single-ended stereo load with less than
0.5% distortion (THD+N) when AVDD= 3V. The mono
speaker amplifier deliversupto 330mW intoan8Ω load with
less than 1% distortion when AVDD =3V.
The LM4930 employs advanced techniquesto reduce power
consumption,to reduce controller overhead andto eliminate
click and pop. Boomer audio power amplifiers were de-
signed specificallyto provide high quality output power with minimal amountof external components.Itis, therefore,
ideally suitedfor mobile phone and other low voltage appli-
cations where minimal power consumptionisa primaryre-
quirement.
Key Specifications PLS OUTat AVDD= 5.0V,8Ω THD+N 1W (typ) PLS OUTat AVDD= 3.0V,8Ω THD+N 330mW (typ) PH/P OUTat AVDD= 3.0V, 32Ω
0.5% THD+N 25mW (typ) Supply voltage range
DVDD (Note8) 2.6Vto 4.5V
AVDD (Note8) 2.6Vto 5.5V Total shutdown current 2µA (typ) PSRRat 217Hz, AVDD=3V 50dB (typ)
Features 16-bit resolution 48kHz stereo DAC 16-bit resolution 8kHz voice codecI2S digital audio data serial interface Two-wire serial control interface PCM voice audio data serial interface 25mW/channel stereo headphone amplifier 330mW mono8Ω amplifier(at AVDD= 3.0V) 32-step volume controlfor audio output amplifiers No snubber networksor bootstrap capacitors are
requiredbythe headphoneor hands-free amplifiers Digital sidetone generation with adjustable attenuation Gain controllable headphone amp, mono BTL amp, mic
preamp Availablein the 36–bump micro SMD and 44–lead LLP
packages
Applications Mobile Phones Mobile/low power audio appliances PDAs
September 2004
LM4930
Audio
Subsystem
with
Stereo
Headphone
Mono
Speaker
Amplifiers
