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STMicroelectronics Electronic Components Datasheet

ST5088 Datasheet

PROGRAMMABLE AUDIO FRONT END FOR DIGITAL PHONES AND ISDN TERMINALS

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ST5088 pdf
® ST5088
PROGRAMMABLE AUDIO FRONT END
FOR DIGITAL PHONES AND ISDN TERMINALS
FEATURES:
Complete CODEC and FILTER system including:
PCM ANALOG TO DIGITAL AND DIGITAL TO
ANALOG CONVERTERS
POWERFUL ANALOG FRONT END CAPA-
BLE TO INTERFACE DIRECTLY:
- Microphone Dynamic or Electrete
- Earpiece down to 100or up to 150nF
- Loudspeaker down to 50or Buzzer up to
600nF.
TRANSMIT BAND-PASS FILTER
ACTIVE RC NOISE FILTER
RECEIVE LOW-PASS FILTER WITH SIN X/X
CORRECTION
MU-LAW OR A-LAW SELECTABLE COM-
PANDING CODER AND DECODER
PRECISION VOLTAGE REFERENCE
Phones Features:
DUAL SWITCHABLE MICROPHONE AMPLI-
FIER INPUTS. GAIN PROGRAMMABLE: 15
dB RANGE, 1 dB STEP.
LOUDSPEAKER AMPLIFIER OUTPUT.
SWITCHABLE MAXIMUM GAIN: +9dB/+27dB
WITH AUTOMATIC DIGITAL ANTICLIPPING
SYSTEM. aTTENUATION PROGRAMMABLE:
30dB RANGE, 2dB STEP.
SEPARATE EARPIECE AMPLIFIER OUTPUT.
ATTENUATION PROGRAMMABLE: 15 dB
RANGE, 1 dB STEP.
AUXILIARY TAPE RECORDER ANALOG IN-
TERFACE: Tx + Rx COMBINED OUTPUT.
AUXILIARY SWITCHABLE EXTERNAL RING
INPUT (EAIN).
TRANSIENT SUPRESSION SIGNAL DURING
POWER ON.
INTERNAL PROGRAMMABLE SIDETONE
CIRCUIT. ATTENUATION PROGRAMMABLE:
15 dB RANGE, 1 dB STEP, INDEPENDENT
FROM Rx CONTROL.
INTERNAL RING OR TONE GENERATOR IN-
CLUDING DTMF TONES, SINEWAVE OR
SQUAREWAVE WAVEFORMS. ATTENU-
ATION PROGRAMMABLE: 27 dB RANGE, 3
dB STEP.
RINGER CONTROL PROGRAMMABLE IN-
SO28
PLCC28
ORDERING NUMBERS:
ST5088D
ST5088FN
TERNALLY (µP) OR EXTERNALLY (pin AT)
COMPATIBLE WITH HANDS-FREE CIRCUIT
TEA7540.
ON CHIP SWITCHABLE ANTI-ACOUSTIC
FEED-BACK CIRCUIT (ANTI-LARSEN).
General Features:
EXTENDED TEMPERATURE RANGE OP-
ERATION (*) – 25°C TO +85°C.
EXTENDED POWER SUPPLY RANGE 5V±10%.
60 mW OPERATING POWER (TYPICAL).
1.0 mW STANDBY POWER (TYPICAL).
CMOS DIGITAL INTERFACES.
SINGLE + 5V SUPPLY.
DIGITAL LOOPBACK TEST MODE.
PROGRAMMABLE DIGITAL AND CONTROL
INTERFACES:
– Digital PCM Interface associated with
separate serial Control Interface MI-
CROWIREcompatible.
– GCI interface compatible.
(*) Functionality guaranteed in the range – 25°C to +85°C;
Timing and Electrical Specifications are guaranteed in the range
– 5°C to +70°C.
APPLICATIONS:
ISDN TERMINALS.
DIGITAL TELEPHONES
CT2 AND GSM APPLICATIONS
December 1999
1/33
This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.


STMicroelectronics Electronic Components Datasheet

ST5088 Datasheet

PROGRAMMABLE AUDIO FRONT END FOR DIGITAL PHONES AND ISDN TERMINALS

No Preview Available !

ST5088 pdf
ST5088
PIN CONNECTION (Top view)
HFI
HFO
VFR+
VFR-
VCC
LS-
LS+
GND
MS
DX
AT
CO/A2
CI/A1
DR
1 28
2 27
3 26
4 25
5 24
6 23
7 SO28 22
8 21
9 20
10 19
11 18
12 17
13 16
14 15
D93TL047
EAIN
GNDA
MIC 2-
VCCA
TRO
MIC 1-
MIC 1+
MIC 2+
CS-/A3
CCLK/A0
N.C.
LO
MCLK
FS
BLOCK DIAGRAM
PLCC28
2/33


Part Number ST5088
Description PROGRAMMABLE AUDIO FRONT END FOR DIGITAL PHONES AND ISDN TERMINALS
Maker ST Microelectronics
Total Page 30 Pages
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