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December 2005

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STw5094A

18-bit Low Power Asynchronous Stereo Audio DAC

with Integrated Power Amplifiers and Voice Codec

Rev. 2

FEATURES

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

– 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

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

Ωwith 40 dB range

programmable gain

– Balanced earpiece

⁄ loudspeaker output.

Driving capability: 300 mW (typ. 0.1% T.H.D)

over 8

Ωwith 30dB range programmable gain

– Analog stereo input for FM radio with 38 dB

range programmable gain

– 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

– 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

– Single 2.7 V to 3.3 V supply

-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.

TFBGA 6x6 (36 pins)

ORDER CODES: STw5094AD/LF, STw5094ADT/LF