tea1085t NXP Semiconductors, tea1085t Datasheet
tea1085t
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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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... TEA1085A - logic level input ORDERING INFORMATION EXTENDED TYPE NUMBER PINS TEA1085/TEA1085A TEA1085T/TEA1085AT Notes 1. SOT101-1; 1998 Jun 18. 2. 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 ...
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Philips Semiconductors Listening-in circuit for line-powered telephone sets QUICK REFERENCE DATA SYMBOL PARAMETER I input current range SUP V stabilized supply voltage BB I current consumption SUP G voltage gain loudspeaker amplifi maximum gain reduction with logic v ...
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Acrobat reader. white to force landscape pages to be ... line TEA1060 (LN) SREF SUP SDC ...
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Philips Semiconductors Listening-in circuit for line-powered telephone sets PIN CONFIGURATION SYMBOL PIN DESCRIPTION V 1 negative supply SS SUP 2 positive supply SDC 3 supply amplifier decoupling SREF 4 supply reference input LSI1 5 loudspeaker amplifier input 1 LSI2 6 ...
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Philips Semiconductors Listening-in circuit for line-powered telephone sets FUNCTIONAL DESCRIPTION Figure 1 illustrates a block diagram of the TEA1085/TEA1085A with external components and connections to the transmission IC. The TEA1085/TEA1085A are bipolar ICs which have been designed for use in ...
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Philips Semiconductors Listening-in circuit for line-powered telephone sets Supply; SUP, SREF and The line current is divided into I TR The supply arrangement is illustrated in Fig.4. I line handbook, full pagewidth I CC ...
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Philips Semiconductors Listening-in circuit for line-powered telephone sets 5.5 ndbook, halfpage V BB (V) 5.1 4.7 4.3 3.9 3 Fig.5 Stabilized supply voltage as a function of R38. Supply amplifier stability (SDC) pin 3 To ensure stability ...
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Philips Semiconductors Listening-in circuit for line-powered telephone sets Dynamic limiter (DLC) pin 23 To prevent distortion of the signal at the loudspeaker outputs the gain of the amplifier is reduced rapidly when: the peaks of the signal at the loudspeaker ...
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Philips Semiconductors Listening-in circuit for line-powered telephone sets Power down input (PD) pin 19 During pulse dialling or register recall (timed loop break) the telephone line is interrupted, thereby breaking the supply to the transmission and listening-in circuits. The capacitor ...
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Philips Semiconductors Listening-in circuit for line-powered telephone sets Larsen limiter detector (DTI and DCA) pins 15 and 16 The QLA output signal is AC coupled to the detector input DTI. DTI is biased by potential divider R30 and R31. The ...
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Philips Semiconductors Listening-in circuit for line-powered telephone sets This reaction time is the 'attack delay time' and ensures minimum sensitivity of the system for own speech. The first threshold level at DTI is determined by the equation: I 1.25 DCA ...
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Philips Semiconductors Listening-in circuit for line-powered telephone sets handbook, full pagewidth V DTI V LLC Where Change of receive gain = --------- - G vo Fig.10 Dynamic behaviour of Larsen limiter (in open-loop condition). handbook, full pagewidth Where: ...
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... T storage temperature range stg T junction temperature j THERMAL RESISTANCE SYMBOL R from junction to ambient in free air th j-a TEA1085/TEA1085A TEA1085T/TEA1085AT Note 1. 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 ...
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... 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 ( 1.2 W. amb tot = 45 C ...
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Philips Semiconductors 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; 50 ...
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Philips Semiconductors Listening-in circuit for line-powered telephone sets SYMBOL PARAMETER Loudspeaker outputs QLS1 and QLS2 V output voltage (peak-to-peak o(p-p) value) single ended bridge tied load THD total harmonic distortion single ended bridge tied load V output voltage (peak-to-peak o(p-p) ...
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Philips Semiconductors Listening-in circuit for line-powered telephone sets SYMBOL PARAMETER Larsen limiter preamplifier operational amplifier G open-loop gain v0 f 1st pole p1 f 2nd pole p2 G unity gain bandwidth B G voltage gain v G gain adjustment range ...
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Philips Semiconductors Listening-in circuit for line-powered telephone sets SYMBOL PARAMETER MUTE input; TEA1085 (toggle function, positive edge triggered set-reset flip-flop) V LOW level input voltage IL V HIGH level input voltage IH I input current MUTE t minimum input pulse ...
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Acrobat reader. white to force landscape pages to be ... line TEA1060 ...
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Philips Semiconductors Listening-in circuit for line-powered telephone sets Table 2 Component values in test circuit Fig.14 COMPONENT CONDITION Resistor R20 R25 R26 R27 R28 R29 R30 R31 R32 R33 R34 R35 R36 Capacitor C1 C3 C20 C21 ...
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Philips Semiconductors Listening-in circuit for line-powered telephone sets handbook, full pagewidth V DTI V LLCO 0. LLC (b) Attack delay (t ad Larsen release time ( 100 mV(RMS) and 1 V(RMS kHz. DTI ...
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Acrobat reader. white to force landscape pages to be ... R1 R20 TONE C2 TEA1060 DIALLER LINE ...
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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 ...
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Philips Semiconductors Listening-in circuit for line-powered telephone sets PACKAGE OUTLINES DIP24: plastic dual in-line package; 24 leads (600 mil pin 1 index 1 DIMENSIONS (inch dimensions are derived from the original mm dimensions ...
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Philips Semiconductors Listening-in circuit for line-powered telephone sets SO24: plastic small outline package; 24 leads; body width 7 pin 1 index 1 e DIMENSIONS (inch dimensions are derived from the original mm dimensions) A UNIT A ...
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Philips Semiconductors Listening-in circuit for line-powered telephone sets SOLDERING Introduction There is no soldering method that is ideal for all IC packages. Wave soldering is often preferred when through-hole and surface mounted components are mixed on one printed-circuit board. However, ...
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Philips Semiconductors Listening-in circuit for line-powered telephone sets DEFINITIONS Data sheet status Objective specification This data sheet contains target or goal specifications for product development. Preliminary specification This data sheet contains preliminary data; supplementary data may be published later. Product ...
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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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Philips Semiconductors – a worldwide company Argentina: see South America Australia: 34 Waterloo Road, NORTH RYDE, NSW 2113, Tel. +61 2 9805 4455, Fax. +61 2 9805 4466 Austria: Computerstr. 6, A-1101 WIEN, P.O. Box 213, Tel. +43 160 1010, ...