STW5098T datasheet(9/86 Pages) STMICROELECTRONICS

9 / 86 page

Overview

STw5098

8/85

Overview

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Dual 20 bit audio resolution, 8kHz to 96kHz independent rate ADC and DAC

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Dual I2S/PCM digital interfaces for dual master

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Sustain complex voice and audio flow with or without mixing

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Two I2C/SPI compatible independent control interfaces

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Asynchronous sampling ADC and DAC that do not require oversampled clock and

information on the audio data sampling frequency (fs). Jitter tolerant fs

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Wide master clock range from 4MHz to 32MHz

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Two stereo headphones drivers, hand free loudspeaker driver, line out drivers

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Mixable analog line inputs

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Voice filters: 8/16kHz with voice channel filters

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Automatic gain control for microphone and line-in inputs

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Four programmable master/slave serial audio data interfaces: I2S, SPI, PCM

compatible and other formats

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Frequency programmable clock outputs

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Multibit

Σ∆ modulators with data weighted averaging ADC and DAC

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Four DSP functions for bass-treble-volume control, mute, mono/stereo selection, voice

channel filters, de-emphasis filter and dynamic compression

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93 dB dynamic range ADC, 0.001% THD with full scale with full scale output @ 2.7V

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95 dB dynamic range DAC, 0.02% THD performance @ 2.7V over 16

Ω load

Analog inputs

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Selectable stereo differential or single-ended microphone amplifier inputs with 51dB

range programmable gain

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2 microphone biasing output

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Microphone plug-in and push-button detection input

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Selectable stereo differential or single-ended line inputs with 38dB range

programmable gain

Analog output drivers

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2 Stereo headphones outputs. driving capability: 40mW (0.1% THD) over 16

Ω with

40dB range programmable gain

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Common mode voltage headphones driver (phantom ground)

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1 Balanced loudspeaker output with driving capability up to 500mW (VCCLS>3.5V; 1%

THD) over 8

Ω with 30dB range programmable gain

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1 Balanced earphone output with driving capability up to 125mW

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Transient suppression filter during power up and power down

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Balanced/unbalanced stereo line outputs with 1 k

Ω driving capability

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