STW5093 Datasheet, PDF (1/34 Pages) STMicroelectronics – 2.7V SUPPLY 14-BIT LINEAR CODEC WITH HIGH-PERFORMANCE AUDIO FRONT-END

STw5093
2.7V SUPPLY 14-BIT LINEAR CODEC WITH
HIGH-PERFORMANCE AUDIO FRONT-END
FEATURES:
Complete CODEC and FILTER system including:
■ 14 BIT LINEAR ANALOG TO DIGITAL AND
DIGITAL TO ANALOG CONVERTERS.
■ 8 BIT COMPANDED ANALOG TO DIGITAL
AND DIGITAL TO ANALOG CONVERTERS A-
LAW OR µ-LAW.
■ TRANSMIT AND RECEIVE BAND-PASS
FILTERS
■ ACTIVE ANTIALIAS NOISE FILTER.
Phone Features:
■ ONE MICROPHONE BIASING OUTPUT
■ REMOTE CONTROL (REMOCON) FUNCTION
■ THREE SWITCHABLE MICROPHONE
AMPLIFIER INPUTS. GAIN
PROGRAMMABLE:0 . . 42.5 dB AMPLIFIER,
1.5 dB STEPS (+ MUTE).
■ EARPIECE AUDIO OUTPUT. ATTENUATION
PROGRAMMABLE: 0 . . 30 dB, 2 dB STEPS.
■ EXTERNAL AUDIO OUTPUT. ATTENUATION
PROGRAMMABLE: 0 . . 30 dB, 2 dB STEPS.
■ DRIVING CAPABILITY: 140mW OVER 8Ω
■ TRANSIENT SUPRESSION SIGNAL DURING
POWER ON AND DURING AMPLIFIER
SWITCHING.
■ INTERNAL PROGRAMMABLE SIDETONE
CIRCUIT. ATTENUATION PROGRAMMABLE:
16 dB RANGE, 1 dB STEP.
■ INTERNAL RING, TONE AND DTMF
GENERATOR, SINEWAVE OR
SQUAREWAVE WAVEFORMS.
ATTENUATION PROGRAMMABLE: 27dB
RANGE, 3dB STEP. THREE FREQUENCY
RANGES:
a) 3.9Hz . . . . 996Hz, 3.9Hz STEP
b) 7.8Hz . . . . 1992Hz, 7.8Hz STEP
c) 15.6Hz . . . . 3984Hz, 15.6Hz STEP
■ PROGRAMMABLE PULSE WIDTH
MODULATED BUZZER DRIVER OUTPUT.
General Features:
■ SINGLE 2.7V to 3.3V SUPPLY
■ EXTENDED TEMPERATURE RANGE
OPERATION (*) -40°C to 85°C.
■ 1.0µW STANDBY POWER (TYP. AT 2.7V).
■ 13mW OPERATING POWER (TYP. AT 2.7V).
TSSOP30
ORDERING NUMBER: STw5093
■ 1.8V TO 3.3V CMOS COMPATIBLE DIGITAL
INTERFACES.
■ PROGRAMMABLE PCM AND CONTROL
INTERFACE MICROWIRE COMPATIBLE.
APPLICATIONS:
■ GSM/DCS1800/PCS1900/JDC DIGITAL
CELLULAR TELEPHONES.
■ CDMA CELLULAR TELEPHONES.
■ DECT/CT2/PHS DIGITAL CORDLESS
TELEPHONES.
■ BATTERY OPERATED AUDIO FRONT-ENDS
FOR DSPs.
(*) Functionality guaranteed in the range - 40°C to +85°C; Timing
and Electrical Specifications are guaranteed in the range - 30°C
to +85°C.
GENERAL DESCRIPTION
STw5093 is a high performance low power combined
PCM CODEC/FILTER device tailored to implement the
audio front-end functions required by low voltage/low
power consumption digital cellular terminals. STw5093
offers a number of programmable functions accessed
through a serial control channel that easily interfaces to
any classical microcontroller. The PCM interface sup-
ports both non-delayed (normal and reverse) and de-
layed frame synchronization modes.
STw5093 can be configurated either as a 14-bit lin-
ear or as an 8-bit companded PCM coder.
Additionally to the CODEC/FILTER function, STw5093
includes a Tone/Ring/DTMF generator, a sidetone gen-
eration, and a buzzer driver output.STw5093 fulfills and
exceeds D3/D4 and CCITT recommendations and ETSI
requirements for digital handset terminals.
Main applications include digital mobile phones, as
cellular and cordless phones, or any battery powered
equipment that requires audio codecs operating at
low single supply voltages.
March 2004
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