ST5090 Datasheet, PDF (1/29 Pages) STMicroelectronics – LOW VOLTAGE 14-BIT LINEAR CODEC WITH HIGH-PERFORMANCE AUDIO FRONT-END

ST5090
LOW VOLTAGE 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:
THREE SWITCHABLE MICROPHONE AM-
PLIFIER INPUTS. GAIN PROGRAMMABLE:
20 dB PREAMP. (+MUTE), 0 . . 22.5 dB AM-
PLIFIER, 1.5 dB STEPS.
EARPIECE AUDIO OUTPUT. ATTENUATION
PROGRAMMABLE: 0 . . 30 dB, 2 dB STEPS.
EXTERNAL AUDIO OUTPUT. ATTENUATION
PROGRAMMABLE: 0 . . 30 dB, 2 dB STEPS.
TRANSIENT SUPRESSION SIGNAL DURING
POWER ON AND DURING AMPLIFIER
SWITCHING.
INTERNAL PROGRAMMABLE SIDETONE
CIRCUIT. ATTENUATION PROGRAMMABLE:
16 dB RANGE, 1 dB STEP. ROUTING POSSI-
BLE TO BOTH OUTPUTS.
INTERNAL RING OR TONE GENERATOR IN-
CLUDING DTMF TONES, SINEWAVE OR
SQUAREWAVE WAVEFORMS. ATTENU-
ATION 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 MODU-
LATED BUZZER DRIVER OUTPUT.
General Features:
SINGLE 3.3V ±10% OR 5V ±10% SUPPLY
SELECTABLE.
EXTENDED TEMPERATURE RANGE OPERA-
TION (*) -40°C to 85°C.
1.5 µW STANDBY POWER (TYP. AT 3V).
21 mW OPERATING POWER (TYP. AT 3V).
CMOS COMPATIBLE DIGITAL INTERFACES.
PROGRAMMABLE PCM AND CONTROL IN-
TERFACE MICROWIRE COMPATIBLE.
TQFP44(10x10x1.4)
SO28
ORDERING NUMBERS:
ST5090AD
ST5090ADTR
ST5090TQFP
ST5090TQFPTR
Package
SO28
SO28
TQFP44
TQFP44
Dim.
10x10x1.4
10x10x1.4
Cond.
Tube
Tape&Reel
Tray 8x20
Tape&Reel
APPLICATIONS:
GSM DIGITAL CELLULAR TELEPHONES.
CT2 DIGITAL CORDLESS TELEPHONES.
DECT 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
ST5090 is a high performance low power combined
PCM CODEC/FILTER device tailored to implement
the audio front-end functions required by the next
generation low voltage/low power consumption
digital terminals.
ST5090 offers a number of programmable func-
tions accessed through a serial control channel that
easily interfaces to any classical microcontroller.
The PCM interface supports both non-delayed (nor-
mal and reverse) and delayed frame synchroniza-
tion modes.
ST5090 can be configurated either as a 14-bit lin-
ear or as an 8-bit companded PCM coder.
Additionally to the CODEC/FILTER function,
ST5090 includes a Tone/Ring/DTMF generator, a
sidetone generation,and a buzzer driver output.
ST5090 fulfills and exceeds D3/D4 and CCITT rec-
ommendations and ETSI requirements for digital
handset terminals.
Main applications include digital mobile phones, as
cellular and cordless phones, or any battery pow-
ered equipment that requires audio codecs operat-
ing at low single supply voltages
February 1996
1/29
This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.