GENERAL DESCRIPTION STw5094 is a low power Stereo Audio DAC device with Headphones Amplifiers for high quality MP3 and FM radio listening. The STw5094 includes also an high performance low power combined PCM CODEC ⁄ FILTER tailored to implement the audio front-end functions required by low voltage low power consumption digital cellular terminals with added MP3 and FM radio listening. FEATURES: Complete STEREO AUDIO DAC and FILTERS including: ■ 18 BIT DIGITAL TO ANALOG CONVERTERS. ■ LINEAR PHASE DIGITAL FILTERS. ■ ACTIVE LINEAR PHASE SMOOTHING FILTER. ■ 30Ω LOAD STEREO HEADPHONES DRIVERS, 8Ω LOAD MONO LOUDSPEAKER DRIVER FOR GROUP LISTENING. Stereo Audio DAC Features: ■ MULTIBIT Σ∆ MODULATOR WITH DATA WEIGHTED AVERAGING DAC. ■ 92 dB DYNAMIC RANGE, 0.01% THD OVER 30Ω LOAD PERFORMANCE. ■ SUPPORTS ALL THE MPEG 1 & 2 SAMPLING FREQUENCIES AND THE EXTENSION TO MPEG 2.5: 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48 kHz. ■ TONES FROM TONE GENERATOR CAN BE INJECTED IN THE AUDIO PATHS. Stereo Headphones and Loudspeaker/Earpiece Power Amplifiers features and Stereo Input for FM Radio Features: ■ 20kHz BANDWIDTH STEREO HEADPHONES OUTPUTS. DRIVING CAPABILITY: 20mW (TYP. 0.1% T.H.D) OVER 30Ω WITH 40 dB RANGE PROGRAMMABLE GAIN. ■ BALANCED EARPIECE ⁄ LOUDSPEAKER OUTPUT. DRIVING CAPABILITY: 190mW (TYP. 0.1% T.H.D) OVER 8Ω WITH 30dB RANGE PROGRAMMABLE GAIN. ■ ANALOG STEREO INPUT FOR FM RADIO WITH 38 dB RANGE PROGRAMMABLE GAIN. Complete CODEC and FILTER system including: ■ 14 BIT LINEAR ADC AND DAC. ■ 8 BIT COMPANDED ADC AND DAC A-LAW OR µ-LAW. ■ TRANSMIT AND RECEIVE DIGITAL BAND-PASS FILTERS. ■ ACTIVE ANTIALIAS AND SMOOTHING FILTERS. ■ 8Ω LOAD EARPIECE/LOUDSPEAKER DRIVER, 30Ω LOAD AUXILIARY DRIVER. Voice CODEC Features: ■ SUPPORT BOTH 8kHz AND 16kHz SAMPLING RATE. ■ ONE MICROPHONE BIASING OUTPUT. ■ REMOTE CONTROL FUNCTION. ■ ONE LINE INPUT AND TWO SWITCHABLE MICROPHONE AMPLIFIER INPUTS. 42.5dB RANGE PROGRAMMABLE GAIN. ■ TRANSIENT SUPRESSION DURING POWER UP AND POWER DOWN. ■ INTERNAL PROGRAMMABLE SIDETONE CIRCUIT. ■ INTERNAL RING, TONE AND DTMF GENERATOR. ■ PROGRAMMABLE PWM BUZZER DRIVER. General Features: ■ SINGLE 2.7V to 3.3V SUPPLY. ■ EXTENDED TEMPERATURE RANGE OPERATION (*) -40°C to 85°C. ■ 1 µW STANDBY POWER (TYP. AT 2.7V). ■ 13 mW OPERATING POWER IN AUDIO LISTENING MODE (TYP. AT 2.7V). ■ 11 mW OPERATING POWER IN VOICE CODEC MODE (TYP. AT 2.7V). ■ 1.8V TO 3.3V CMOS COMPATIBLE DIGITAL INTERFACES. ■ PROGRAMMABLE PCM INTERFACE. ■ I2C COMPATIBLE CONTROL INTERFACE. ■ PROGRAMMABLE SERIAL AUDIO DATA INPUT INTERFACE (I2S AND OTHER FORMATS).
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