U4090B ATMEL Corporation, U4090B Datasheet
U4090B
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U4090B Summary of contents
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... Monolithic Integrated Feature Phone Circuit Description The c controlled telephone circuit U4090B is a linear integrated circuit for use in feature phones, answering machines and fax machines. It contains the speech circuit, tone ringer interface with dc/dc converter, sidetone equivalent and ear protection rectifiers. The circuit is line powered and contains all components necessary for amplification of signals and adaptation to the line ...
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... U4090B Block Diagram 2 (34) Preliminary Information Figure 1. TELEFUNKEN Semiconductors Rev. C1, 28-Oct-96 ...
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... Figure 2. Application circuit for loudhearing TELEFUNKEN Semiconductors Rev. C1, 28-Oct-96 Preliminary Information U4090B 3 (34) ...
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... U4090B Figure 3. Application for handsfree operation 4 (34) Preliminary Information TELEFUNKEN Semiconductors Rev. C1, 28-Oct-96 ...
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... Typical value of external components C 100 4 220 470 820 100 100 150 100 100 6 100 470 2 TELEFUNKEN Semiconductors Rev. C1, 28-Oct-96 Preliminary Information U4090B R > 1 680 330 120 330 220 3 (34) ...
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... U4090B DTMF 3 42 MICO 4 41 MIC2 5 40 MIC1 IND GND 9 36 SENSE U4090B 12 SAO 33 V MPS SWOUT 30 15 COSC 29 16 VRING 28 17 THA 27 18 RFDO 26 19 LIDET 20 25 IMPSEL 21 24 TSACL 7905 e 6 (34) Preliminary Information Pin Description TXIN Pin Symbol resistor from this pin to GND sets the ...
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... AFS is switched off 27 INLDT Input of transmit level detector 28 INLDR Input of receive level detector TELEFUNKEN Semiconductors Rev. C1, 28-Oct-96 Preliminary Information U4090B Pin Symbol Function 29 TLDT Time constant of transmit level detector 30 TLDR Time constant of receive level ...
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... U4090B DC line interface and supply voltage generation The DC line interface consists of an electronic inductance and a dual port output stage, which charges the capacitors at V and V . The value of the equivalent inductance MPS B is given SENSE IND DC 30 order to improve the supply during worst case operating ...
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... The U4090B contains two identical series regulators, which provide a supply voltage V of 3.3 V suitable for MP a microprocessor. In speech mode both regulators are active, because V and V are charged simultaneously MPS B by the DC-line interface. Output current is 4 mA. The capacitor used to provide the microcomputer MPS with sufficient power during long line interruptions ...
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... SEL = high impedance activates all switches at the ES B line. Acoustic feedback suppression Acoustical feedback from the loudspeaker to the handset microphone may cause instability in the system. The U4090B offers a very efficient feedback suppression circuit, which uses a modified voice switch topology. IMP- figure 8 shows the basic system configuration. TX Att ...
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... TLDT STO VL – VBG + TXA AFS control Max AGA att. – VBG + GR STIS INLDR RECO1 order to produce the envelopes of the speech at TLDT and RLDT. After amplification a decision is made by the differential pair, which direction should be transmitted. U4090B Zint RECIN STO STN 11 (34) ...
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... U4090B TLDT TX RLDT INLDT RX RLDR INLDR 94 8060 TLDR Figure 7. Accoustic feedback suppression by alternative control of transmit- and speaker amplifier gain The attenuation of the controlled amplifiers TXA and SAI is determined by the emitter current IAT, which is com- prised of three parts: I sets maximum attenuation ATAS ...
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... QS (see figure 6). As long above typ. 1.6 mA, output LIDET is low. This comparator does not use hysteresis. LIDET LIDET ILOFF mode Figure 10. Line detection in speech mode with hysteresis U4090B 94 8957 not usable GSA (dB) 94 8959 ILON IL 13 (34) ...
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... Total power dissipation amb 14 (34) Preliminary Information Ringing frequency detector (RFD) The U4090B offers an output signal for the micro- (low B controller, which is a digital representation of the double ringing frequency generated by a current comparator with hysteresis. Input voltage VRING is transformed into a current via RTHA. Thresholds are 8 RFDO and VRING are in phase ...
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... V L 7.5 8.8 9 mV, RGT = unless otherwise specified 39 CMRR 1.8 3 Lmax –5.2 MICOmax W no – 0 U4090B Value Unit 70 K GND, unless otherwise MUTR Max Unit Figure 5 10 41.8 " 0 " 0 " 0 110 4.2 dBm 28 dBm 28 28 –72 dBmp ms 42 (34) ...
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... U4090B Parameters Test Conditions / Pin 300 Distortion at low operating current RDC = 68 k Vmic = 100 mA, L Line loss compensation RAGA = Mute suppression MIC muted (microphone Mutx = open preamplifier b) TXA muted (second IMPSEL = open stage) Receiving amplifier mA, RGR = 62 k, unless otherwise specified mA, single ...
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... TELEFUNKEN Semiconductors Rev. C1, 28-Oct-96 Preliminary Information Symbol Min Typ Z 570 600 imp Z 840 900 MP imp Lmin 36.5 W 35.5 – VSAO 0.8 1 VMP MUTX 40.7 41 U4090B Max Unit Figure W 640 W 27 960 37 200 V 31 psoph " – 60 dBm 31 " " " 0 (34) ...
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... U4090B Parameters Test Conditions / Pin W RGT = Input resistance RGT = Distortion of DTMF signal dBm L Gain deviation with current 100 mA L AFS Acousting feedback suppression w Adjustment range attenuation mA Attenuation of transmit INLDT gain ATAFS INLDR Attenuation of speaker INLDP amplifier ATAFS INLDR w AFS disable Supply voltages, Vmic = 25 mV – ...
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... Min Typ – MUTE +10 MP > MUTE VMP-0.3 V MUTE V > L Ipd 1 1 IMPSEL I – 18 IMPSEL VMP-0.3 V IMPSEL V V IMPSEL MUTX I – 20 MUTX VMP-0.3 V MUTX V V MUTX ILON 12.6 ILOFF 11.0 ILONPD 0.8 1.6 U4090B Max Unit Figure m – – 0 2 (34) ...
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... U4090B U 4090 B - Control IMPSEL MODE W 0 Line-impedance = 600 Speech TXA = off Line-impedance = 600 Transmit-mute TXA = off Line-impedance = 900 Transmit-mute TXA = off Line-impedance = 900 Speech TXA = off MUTR MODE 0 RA2 = on Speech RECATT = on STIS + STIL = RA2 = on For answering RECATT = off machine STIS = on, STIL = off ...
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... Figure 12. Typical DC Characteristic G (dB) T Figure 13. Typical adjustment range of transmit gain TELEFUNKEN Semiconductors Rev. C1, 28-Oct-96 Preliminary Information U4090B RGT (kohm) 94 8860 94 8856 21 (34) ...
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... U4090B Figure 14. Typical adjustment range of receive gain (differential output) 948855 Figure 15. Typical AGA-Characteristic 22 (34) Preliminary Information 94 8859 TELEFUNKEN Semiconductors Rev. C1, 28-Oct-96 ...
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... Figure 16. Typical load characteristic of V DC-characteristic and 3 mW loudspeaker output Figure 17. Typical load characteristic of V (RDC = 130 k TELEFUNKEN Semiconductors Rev. C1, 28-Oct-96 Preliminary Information for a maximum (RDC = infinity) B for a medium DC-characteristic and 3 mW loudspeaker output U4090B 94 8858 94 8874 23 (34) ...
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... U4090B Figure 18. Typical load characteristic of V (RDC = (34) Preliminary Information for a minimum DC-characteristic and 3 mW loudspeaker output TELEFUNKEN Semiconductors 94 8861 Rev. C1, 28-Oct-96 ...
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... TELEFUNKEN Semiconductors Rev. C1, 28-Oct-96 Preliminary Information 9132 94 Figure 19. Basic test circuit U4090B 25 (34) ...
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... U4090B Figure 20. DC characteristics, line detection 26 (34) Preliminary Information 9133 94 TELEFUNKEN Semiconductors Rev. C1, 28-Oct-96 ...
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... TELEFUNKEN Semiconductors Rev. C1, 28-Oct-96 Preliminary Information 9134 94 Figure 21. U4090B 27 (34) ...
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... U4090B 9135 28 (34) Preliminary Information 94 Figure 22. Transmission amplifier TELEFUNKEN Semiconductors Rev. C1, 28-Oct-96 ...
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... TELEFUNKEN Semiconductors Rev. C1, 28-Oct-96 Preliminary Information 9136 94 Figure 23. DTMF amplifier U4090B 29 (34) ...
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... U4090B Figure 24. Ringing power converter 30 (34) Preliminary Information 9138 94 TELEFUNKEN Semiconductors Rev. C1, 28-Oct-96 ...
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... VATAFS TELEFUNKEN Semiconductors Rev. C1, 28-Oct-96 Preliminary Information 9137 94 Figure 25. Speaker amplifier U4090B 31 (34) ...
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... U4090B Figure 26. Input characteristics of io-ports 32 (34) Preliminary Information 9139 94 open TELEFUNKEN Semiconductors Rev. C1, 28-Oct-96 ...
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... Ordering Information Type U4090B-FN Dimensions in mm Package: SSO44 TELEFUNKEN Semiconductors Rev. C1, 28-Oct-96 Preliminary Information U4090B Package SSO44 94 8888 33 (34) ...
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... U4090B Ozone Depleting Substances Policy Statement It is the policy of TEMIC TELEFUNKEN microelectronic GmbH to 1. Meet all present and future national and international statutory requirements. 2. Regularly and continuously improve the performance of our products, processes, distribution and operating systems with respect to their impact on the health and safety of our employees and the public, as well as their impact on the environment ...