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STW5098

Dual low power asynchronous stereo audio Codec with integrated power amplifiers

STMicroelectronics 

Overview

1

Overview

STw5098

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

● Dual I2S/PCM digital interfaces for dual master

● Sustain complex voice and audio flow with or without mixing

● Two I2C/SPI compatible independent control interfaces

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

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

● Wide master clock range from 4MHz to 32MHz

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

● Mixable analog line inputs

● Voice filters: 8/16kHz with voice channel filters

● Automatic gain control for microphone and line-in inputs

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

compatible and other formats

● Frequency programmable clock outputs

● Multibit Σ∆ modulators with data weighted averaging ADC and DAC

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

channel filters, de-emphasis filter and dynamic compression

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

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

Analog inputs

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

range programmable gain

● 2 microphone biasing output

● Microphone plug-in and push-button detection input

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

programmable gain

Analog output drivers

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

40dB range programmable gain

● Common mode voltage headphones driver (phantom ground)

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

THD) over 8Ω with 30dB range programmable gain

● 1 Balanced earphone output with driving capability up to 125mW

● Transient suppression filter during power up and power down

● Balanced/unbalanced stereo line outputs with 1 kΩ driving capability

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