STW5094A Datasheet, PDF (1/51 Pages) STMicroelectronics – 18-bit Low Power Asynchronous Stereo Audio DAC with Integrated Power Amplifiers and Voice Codec

STw5094A
18-bit Low Power Asynchronous Stereo Audio DAC
with Integrated Power Amplifiers and Voice Codec
FEATURES
■ Complete stereo audio digital to analog
converters and filters
– 18-bit, 8 kHz to 48 kHz DAC with sample-rate
conversion
– Linear phase analog&digital filters
– 16 Ω load stereo headphones drivers, 8 Ω
load mono loudspeaker driver for group
listening
■ Stereo audio DAC features
– Asynchronous sampling DAC: does not
require oversampled clock and information
on the audio data sampling frequency.
Jitter tolerant
– Multibit Σ∆ modulator with data weighted
averaging DAC
– 92 dB dynamic range, 0.01% THD over 16 Ω
load performance
– Support any sampling frequency in the range
8 kHz to 48 kHz
– DSP functions for bass-treble-volume
controls, deemphasis filter and dynamic
compression
– 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:
– 20 kHz bandwidth stereo headphones
outputs. Driving capability: 40 mW
(typ. 0.1% T.H.D) over 16 Ω with 40 dB range
programmable gain
– Balanced earpiece⁄ loudspeaker output.
Driving capability: 300 mW (typ. 0.1% T.H.D)
over 8 Ω with 30dB range programmable gain
– Analog stereo input for FM radio with 38 dB
range programmable gain
TFBGA 6x6 (36 pins)
ORDER CODES: STw5094AD/LF, STw5094ADT/LF
■ Complete CODEC and filter system
– 14-bit linear or 8-bit companded ADC and
DAC
– Transmit and receive digital band-pass filters
– Active antialias and smoothing filters
– 8 Ω load earpiece/loudspeaker driver,
16 Ω load auxiliary driver
■ Voice CODEC features
– Support 8 kHz or 16 kHz sampling rate
– One microphone biasing output
– Remote control function
– Three switchable microphone amplifier
inputs. 42.5 dB range programmable gain
– Transient supression during power up and
power down
– Internal programmable sidetone
– Internal ring, tone and dtmf generator
– Programmable PWM buzzer driver
■ General features
– Single 2.7 V to 3.3 V supply
– Extended temperature range operation ¹
-40 °C to 85 °C
– 1 µW standby power (typ. AT 2.7V).
– 16 mW operating power in audio listening
mode (typ. at 2.7 V).
1.Functionality guaranteed in the range -40°C to +85°C; Timing and Electrical Spec. are guaranteed in the range -30°C to +85°C.
December 2005
.
Rev. 2
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