STw5095 is a low power asynchronous stereo
audio CODEC device with headphones
amplifiers for high quality audio listening and
recording.
The STw5095 control registers are accessed
through a selectable I2C-bus compatible or SPI
compatible interface.
The STw5095 asynchronous stereo audio
CODEC is designed to easily fit in most audio
systems because it supports an extended master
clock range (any value between 4 MHz and
32 MHz) and at the same time it supports any
audio data rate (independent in AD and DA
paths) from 8 kHz to 48 kHz and from 88 kHz to
96 kHz, moreover it can tolerate jitter on audio
data without degrading performance. The audio
data serial interfaces (for AD and DA) can be
Master or Slave, are I2S compatible and they
support other formats that can easily interface to
standard serial ports. The two audio interfaces
can be used as a single bidirectional interface.
Two frequency programmable clock sources are
available to generate the master clock for the
audio sub-system of other devices. The internal
D to A and A to D converters work with up to
24 bit resolution.
The supply voltage can be the same for the
whole device, in the range 2.4 V to 2.7 V, or it can
be differentiated for digital (VCC: 1.8 V to 2.7 V),
analog (VCCA: 2.4 V to 3.3 V) and loudspeaker
driver (VCCLS: VCCA to 5.5 V) to obtain best performance and maximum power to the
loudspeaker (up to 500 mW).
STw5095 has multiple analog mixable inputs and
outputs. It can directly drive Stereo Headphones
without external capacitors and it has a
Loudspeaker driver that can also be used for
monophonic group listening. Stereo differential
and single ended microphones, auxiliary line in
stereo and mono signals can be mixed and
connected to the ADC or directly to the drivers,
mixed also with DAC audio signals.
STw5095 stereo audio Codec main applications
include multimedia handheld devices such as
cellular phones with added low-power highquality
MP3 and⁄ or FM radio listening/recording
features, or any battery powered equipment such
as PDAs, Camcorders, etc. that require Stereo
Audio Codec with Headphones drivers.
Block Diagram
