TEA1085A Philips Semiconductors, TEA1085A Datasheet
TEA1085A
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TEA1085A Summary of contents
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... DATA SHEET TEA1085; TEA1085A Listening-in circuit for line-powered telephone sets Preliminary specification File under Integrated Circuits, IC03A INTEGRATED CIRCUITS March 1992 ...
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... SOT137-1; 1998 Jun 18. March 1992 GENERAL DESCRIPTION The TEA1085 and TEA1085A are bipolar ICs which have been designed for use in line-powered telephone sets and provide a listening-in facility for the received line signal via a loudspeaker. Nearly all the line current can be used for powering the loudspeaker ...
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... DTI(RMS) G Larsen limiter preamplifier gain setting v range T operating ambient temperature range amb March 1992 CONDITIONS PD = HIGH SE BTL typ. OUT into typ. OUT into 50 BTL DTI Larsen mode 3 Preliminary specification TEA1085; TEA1085A MIN. TYP. MAX. UNIT 4 120 mA 3 100 200 ms 7 ...
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... To TEA1060 (SLPE). (2) See Fig.16 (1) (1) THL1 THL2 LLC DCA DTI QLA LARSEN PREAMPLIFIER LEVEL LARSEN LIMITER LEVEL LIMITER TEA1085 TEA1085A RECEIVING POWER AMPLIFIER AMPLIFIER MUTE MUTE LSI1 LSI2 TEA1060 ( (2) TEA1060 ( Fig.1 Block diagram. TEA1060 (MIC) 9 LAI 10 LAI TEA1060 (MIC START ...
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... power-down input MUTE 20 MUTE input QLS1 21 loudspeaker amplifier output 1 QLS2 22 loudspeaker amplifier output 2 DLC 23 dynamic limiter capacitor V 24 stabilized supply decoupling BB March 1992 TEA1085; TEA1085A handbook, halfpage SUP 2 SDC 3 SREF 4 LSI1 5 LSI2 6 TEA1085 TEA1085A GSC2 7 GSC1 8 LAI 9 ...
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... The MUTE function of the TEA1085 has a toggle input to permit the use of a simple push-button switch. The MUTE function of the TEA1085A has a logic input to operate with a microcontroller. By activating the power-down input the current consumption of the circuit will be reduced, this enables pulse dialling or flash (register recall) ...
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... TEA106X ( 1 mA) A practical value for R20 is 150 . This value of resistance produces a value for and I TR The TEA1085/TEA1085A stabilizes its own supply voltage Transistor TR1 provides the supplies for the BB internal circuits. TR2 is used to minimize the signal distortion on the line by momentarily diverting the input ...
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... Fig.5 Stabilized supply voltage as a function of R38. Supply amplifier stability (SDC) pin 3 To ensure stability of the TEA1085/TEA1085A, in combination with a transmission IC of the TEA1060 family capacitor connected between SDC and SUP and a 150 H coil connected between SUP and the positive line terminal (Fig.16) is required. ...
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... MUTE QLS1 standby handbook, full pagewidth March 1992 MUTE input (MUTE) pin 20; TEA1085A This MUTE is provided with a logic input to operate with a microcontroller for instance. The loudspeaker amplifier is disabled when the MUTE input is LOW (connected to V level at the MUTE input enables the amplifier in the listening-in mode. MUTE input (MUTE) pin 20 ...
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... R27 in parallel must be equal to R29 (e.g. R27 = R28 = R29 LAI C24 QLA LAI V QLA R27 R28 10 Preliminary specification TEA1085; TEA1085A = 1.25 / R36; when R36 = 120 R29 / R26; in the basic application QLA M R29). C25 I DCA R30 DTI LARSEN LLC R31 DETECTOR ...
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... DTI and, with the component values of Fig.16, the system will switch from the listen-in mode to the Larsen mode in a time period of 100 ms to 200 ms; consequently, the initial Larsen effect will last only for a short period of time. 11 Preliminary specification TEA1085; TEA1085A (dB ...
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... R35 and R34) depends on the sensitivity of the microphone and loudspeaker, the send and receive gains, sidetone suppression and the acoustical properties which are determined by the cabinet of the telephone set. 12 Preliminary specification TEA1085; TEA1085A . The second threshold SS R35. I DCA 2 R33 if f > Fig.9 – ...
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... Where --- - T March 1992 slope 0 listen-in mode V DTI V DTI1 Fig.11 Definition of duty cycle k. 13 Preliminary specification TEA1085; TEA1085A slope LAr t LAa Larsen mode listen-in mode MGR039 Nominal receive gain = 20 log DTI MGR040 k 0.5 – DTI1 arc sin -------------- - V ˆ ...
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... Device mounted on a glass epoxy board 40.1 March 1992 CONDITIONS with 12 current limiting resistor in series with supply see Fig.12 see Fig. amb T = 125 C j PARAMETER 19.1 1.5 mm. 14 Preliminary specification TEA1085; TEA1085A MIN. MAX. UNIT 0 SUP V 0.5 V ...
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... I SUP (mA) 110 ( 1.4 W. amb tot ( 1.2 W. amb tot ( 1.0 W. amb tot Fig.12 TEA1085/TEA1085A safe operating area. March 1992 MGR041 handbook, halfpage (1) (2) ( SUP (V) (1) T (2) T (3) T (4) T (5) T Fig.13 TEA1085T/TEA1085AT safe operating 15 Preliminary specification TEA1085; TEA1085A 130 I SUP (mA) 110 90 (5) ...
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... Listening-in circuit for line-powered telephone sets CHARACTERISTICS mA; V SREF SS SUP OFF (listening-in mode); MUTE (TEA1085A) = HIGH (listening-in mode); GSC1 = GSC2 = LOW R38; test circuit Fig.14; unless otherwise specified SYMBOL PARAMETER Supplies V minimum DC input voltage SUP V internal reference voltage SUP-SREF ...
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... SUP I = 23.5 mA SUP single ended load SUP SUP SUP tbf SUP tbf SUP 1 k between inputs LSI1, LSI2; psophometrically weighted (P53 curve 1.8 mV(RMS) i 5.8 11 Preliminary specification TEA1085; TEA1085A TYP. MAX. UNIT 1.45 V 2.9 V 2.9 V 4 2. ...
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... R34 = 100 k 1 kHz; see Fig.15 see Fig.15(a) tbf see Fig.15(b) 100 see Fig.15(b 100 mV(RMS) DTI see Fig.15(b) tbf 1.75 DTI 0. 0 LLC 18 Preliminary specification TEA1085; TEA1085A TYP. MAX. UNIT 92 dB 120 Hz 3.3 MHz 4 MHz 0.8 tbf dB 1.25 1. ...
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... W P minimum pulse repetition time R V supply voltage below which BB(MUTE) MUTE toggle is reset G reduction of gain from LSI1, v LSI2 to QLS1, QLS2 MUTE input; TEA1085A V LOW level input voltage IL V HIGH level input voltage IH I input current MUTE G reduction of gain from LSI1, ...
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... V BB R32 I SUP (1) (1) (1) R20 C21 R35 R34 C26 TEA1085 TEA1085A V LSI C20 C31 (1) ( (1) for for TEA1085 TEA1085A Fig.14 Test circuit. R30 R31 (1) C24 C25 V DTI R33 R29 15 11 C23 R26 R27 R25 C22 10 R28 C27 C28 R36 MGR043 (1) (1) ...
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... R36 Capacitor C1 C3 C20 C21 C22 C23 C24 C25 C26 C27 C28 C31 TEA1085 only March 1992 VALUE UNIT 620 3 150 100 k 220 k 100 k 500 100 120 k 100 F 4.7 F 470 2.2 F 2.2 F 100 nF 330 220 F 330 Preliminary specification TEA1085; TEA1085A ...
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... V(RMS kHz. DTI March 1992 200 LAr t LAa ), Larsen attack time (t ), LAa ); LAr Fig.15 Test signals for Larsen level limiter. 22 Preliminary specification TEA1085; TEA1085A V DTI 100 ms V LLC t LIr MGR044 (a) Listen-in release time (t ); LIr V = 100 mV(RMS kHz. DTI ...
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... Acrobat reader. white to force landscape pages to be ... R1 R20 TONE C2 TEA1060 DIALLER LINE interrupt (1) To TEA1060 (SLPE). Fig.16 Basic application of TEA1085/TEA1085A and TEA1060 R32 L1 (1) (1) (1) C21 R35 R34 C26 TEA1085 TEA1085A R24 C29 RV20 5 ...
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... Philips Semiconductors Listening-in circuit for line-powered telephone sets The basic application circuit of the TEA1085/TEA1085A is illustrated in Fig.16. Only the most important components of the TEA1060 part are shown, other components and their values are given in the TEA1060 Data sheet. The supply pin ( the TEA1085/TEA1085A can also be used to supply peripheral circuits (e.g. microcontrollers, BB diallers etc ...
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... 1.7 0.53 0.32 32.0 14.1 1.3 0.38 0.23 31.4 13.7 0.066 0.021 0.013 1.26 0.56 0.051 0.015 0.009 1.24 0.54 REFERENCES JEDEC EIAJ MO-015AD 25 Preliminary specification TEA1085; TEA1085A 3.9 15.80 17.15 2.54 15.24 3.4 15.24 15.90 0.15 0.62 0.68 ...
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... H p 0.49 0.32 15.6 7.6 10.65 1.27 0.36 0.23 15.2 7.4 10.00 0.019 0.013 0.61 0.30 0.419 0.050 0.014 0.009 0.60 0.29 0.394 REFERENCES JEDEC EIAJ MS-013AD 26 Preliminary specification TEA1085; TEA1085A detail 1.1 1.1 1.4 0.25 0.25 0.4 1.0 0.043 ...
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... Use only a low voltage soldering iron (less than 24 V) applied to the flat part of the lead. Contact time must be limited to 10 seconds 300 C. When using a dedicated tool, all other leads can be soldered in one operation within seconds between 270 and 320 C. 27 Preliminary specification TEA1085; TEA1085A ...
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... Philips customers using or selling these products for use in such applications their own risk and agree to fully indemnify Philips for any damages resulting from such improper use or sale. March 1992 TEA1085; TEA1085A 28 Preliminary specification ...
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... Philips Semiconductors Listening-in circuit for line-powered telephone sets March 1992 TEA1085; TEA1085A NOTES 29 Preliminary specification ...
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... Philips Semiconductors Listening-in circuit for line-powered telephone sets March 1992 TEA1085; TEA1085A NOTES 30 Preliminary specification ...
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... Philips Semiconductors Listening-in circuit for line-powered telephone sets March 1992 TEA1085; TEA1085A NOTES 31 Preliminary specification ...
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... Tel. +46 8 5985 2000, Fax. +46 8 5985 2745 Switzerland: Allmendstrasse 140, CH-8027 ZÜRICH, Tel. +41 1 488 2741 Fax. +41 1 488 3263 Taiwan: Philips Semiconductors, 6F, No. 96, Chien Kuo N. Rd., Sec. 1, TAIPEI, Taiwan Tel. +886 2 2134 2865, Fax. +886 2 2134 2874 Thailand: PHILIPS ELECTRONICS (THAILAND) Ltd., 209/2 Sanpavuth-Bangna Road Prakanong, BANGKOK 10260, Tel ...