U4092B TEMIC | Alldatasheet
Document overview
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Technical content
Features
/C0068DC characteristic adjustable /C0068Transmit and receive gain adjustable /C0068Symmetrical input of microphone amplifier /C0068Anti-clipping in transmit direction /C0068Automatic line loss compensation /C0068Built-in ear protection /C0068DTMF and MUTE input /C0068Adjustable sidetone suppression independent of sending and receiving amplification /C0068Integrated amplifier for loudhearing operation /C0068Anti-clipping for loudspeaker amplifier /C0068Improved acoustical feedback suppression /C0068Power down /C0068V oice switch /C0068Tone ringer interface with dc/dc converter /C0068Zero crossing detection /C0068Common speaker for loudhearing and tone ringer /C0068Supply voltages for all functional blocks of a subscriber set /C0068Integrated transistor for short circuiting the line voltage /C0068Answering machine interface /C0068Operation possible from 10 mA line currents Benefits /C0068Savings of one piezo electric transducer /C0068Complete system integration of analog signal processing on one chip /C0068Very few external components
Applications
Feature phone, answering machine, fax machine, speaker phone MC with EEPROM/ DTMF Audio amplifier Speech circuit V oice switch Tone ringer Loudhearing and Tone ringing 94 8741
TELEFUNKEN SemiconductorsU4092 Rev. A1: 24.01.1995Preliminary Information2 Block diagram GT MICO TXIN STO V L IMPSEL AGA IND SENSE VB V MP VMPS VM GND PD IREF V RING C OSC SW OUT RF DO THA RECINSTIRACGRRECOMUTXGSA MIC1 MIC2 DTMF TTXA INLDR TLDR TLDT ATAFS SAO TSACL SAI INLDT MIC TX ACL Acoustical feedback suppression control Transmit mute control SACL Imped control Power supply Current supply SupplyAGA control attenuation V L VMP TXA 94 8896 TS 1411 13 321 8 3924 3020 7 403 Figure 1
Preliminary Information 3Rev. A1: 24.01.1995 1 3 40 32 20 30 7 R3 R4 108 C4 C5 C 6 11 14 13 13 V to C VM /C0109 28 V Q 1 Micro– phone R28 R27 C22 DTMF Generator C21 R20 R19 C20 C19 RECO MICO C 18 C17 R 31 C 16 21C15 C 14 R14 R13 22 24 34 37 36 C 13 R10 R9 R8 VM C 12 C11 C10 VL R15R16 R17 Micro controller VMP 94 8849 U4092B Tip Ring hook switch VM VM VM Earpeace Loud- speaker R12 to pin 32 C 28 Figure 2 Application circuit for loudhearing
TELEFUNKEN SemiconductorsU4092 Rev. A1: 24.01.1995Preliminary Information4 R1 C1 1 3 40 32 20 30 7 R3 R 4 108 C4 C5 C 6 11 14 13 13 V to C V M hook switch 28 V L 1 Q 1 Micro– phone R26 V M R25 C23 DTMF C21 R30 R29 C27 C26 RECO LOGTX 29 C16 C15 C14 R14 R12 22 24 R11 34 37 36 C13 R 10 V M R9 R8 VM C12 C11 C10 VL VM R15R16 R17 Micro– controller VMP94 8850 U4092B Tip Ring BC177 to pin 32 LOGTX Loud speaker Earpiece R24 R23 R22 R18 R 13 R21 C25 C24 C18 C17 VB /C0109 HF–Mic C28 Figure 3 Application for handsfree operation
Preliminary Information 5Rev. A1: 24.01.1995 Typical value of external components C 1 100 nF C 2 4.7 nF C 3 10 /C0109F C 4 220 /C0109F C 5 47 /C0109F C 6 470 /C0109F C 7 820 nF C 8 100 /C0109F C 9 100 nF C 10 150 nF C 11 68 nF C 12 33 nF C 13 10 /C0109F C 14 100 nF C 15 1 /C0109F C 16 47 /C0109F C 17 10 /C0109F C 18 10 /C0109F C 19 68 nF C 20 68 nF C 21 1 /C0109F C 22 100 nF C 23 6.8 nF C 24 10 nF C 25 100 nF C 26 470 nF C 27 33 nF C 28 10 /C0109F L1 2.2 mH R 1 27 k/C0087 R 2 20 k/C0087 R 3 > 68 k/C0087 R 4 10 /C0087 R 5 1.5 k/C0087 R 6 62 k/C0087 R 7 680 k/C0087 R 8 22 k/C0087 R 9 330 /C0087 R 10 3 k/C0087 R 11 62 k/C0087 R 12 30 k/C0087 R 13 62 k/C0087 R 14 120 k/C0087 R 15 47 k/C0087 R 16 1 k/C0087 R 17 1.2 /C0087 R 18 30 k/C0087 R 19 6.8 k/C0087 R 20 6.8 k/C0087 R 21 15 k/C0087 R 22 330 k/C0087 R 23 220 k/C0087 R 24 68 k/C0087 R 25 2 k/C0087 R 26 3.3 k/C0087 R 27 18 k/C0087 R 28 2 k/C0087 R 29 1 k/C0087 R 30 12 k/C0087 R 31 56 k/C0087
TELEFUNKEN SemiconductorsU4092 Rev. A1: 24.01.1995Preliminary Information6 20 21 TXIN RECIN TTXA RAC STI RECO STO IREF AGA TLDR TLDT INLDR INLDT ATAFS MUTX SAI GSA DTMF MICO MIC2 MIC1 PD IND GND SENSE SAO SWOUT COSC VRING THA RFDO IMPSEL TSACL U4092B G T VL VB V MPS G R VM 94 8900 V MP Pin description Pin Symbol Function
1 G T A resistor from this pin to GND sets
the amplification of microphone and DTMF signals; the input amplifier can be muted by applying VMP to G 2 DTMF Input for DTMF signals. Also used for the answering machine and handsfree input. 3 MICO Output of microphone preamplifier.
4 MIC 2 Non-inverting input of microphone
amplifier.
5 MIC 1 Inverting input of microphone
amplifier.
6 PD Active high input for reducing the
current consumption of the circuit. Simultaneously V L is shorted by an internal switch.
7 IND The internal equivalent inductance
of the circuit is proportional to the value of the capacitor at this pin. A resistor connected to ground may be used to reduce the dc line voltage.
8 V L Line voltage
9 GND Reference point for dc- and
ac-output signals.
10 SENSE A small resistor (fixed) connected
the dc characteristic and also effects the line length equalization charac- teristics and the line current at which the loudspeaker amplifier is switched on.
11 V B Unregulated supply voltage for
peripheral circuits (voice switch); limited to typically 7 V . 12 SAO Output of loudspeaker amplifier.
13 V MPS Unregulated supply voltage for µP,
limited to 6.3 V . 14 V MP Regulated supply voltage 3.3 V for peripheral circuits (especially microprocessors). The maximum output current is 2 mA.
15 SWOUT Output for driving external
16 COSC 40 kHz oscillator for ringing power
Preliminary Information 7Rev. A1: 24.01.1995 Pin Symbol Function
17 VRING Input for ringing signal
18 THA Threshold adjustment for ringing
19 RFDO Output of ringing frequency detector
20 IMP-
Control input for selection of line impedance 1. 600 Ω 2. 900 Ω 3. Mute of second transmit stage (TXA); also used for indication of external supply (answering machine); last chosen impedance is stored.
21 TSACL Time constant of anticlipping of
22 GSA Current input for setting the gain of
the speaker amplifier. Adjustment characteristic is logarithmical. For RGSA > 2 M Ω, the speaker amplifier is switched off.
23 SA I Speaker amplifier input (for
loudspeaker, tone ringer and handsfree use)
24 MUTX Three state input of transmit mute:
1) Speech condition; inputs MIC1 / MIC2 active 2) DTMF condition; input DTMF active. A part of the input signal is passed to the receiving amplifier as a confidence signal during dialing. 3) Input DTMF used for answering machine and handsfree use; receive branch not affected.
25 ATAFS Attenuation of acoustical feedback
suppression. Maximum attenuation of AFS circuit is set by a resistor at this pin. Without the resistor, AFS is switched off.
26 INLDT Input of transmit level detector
27 INLDR Input of receive level detector
29 TLDT Time constant of transmit level
29 TLDR Time constant of receive level
30 AGA Automatic gain adjustment with line
current. A resistor connected from this pin to GND sets the starting point. Max. gain change is 6 dB.
31 IREF Internal reference current
generation; RREF = 62 kΩ ; IREF = 20 µA 32 STO Side tone reduction output. Output resistance is approximately 300 Ω . Maximum load impedance is 10 kΩ.
33 V M Reference node for
loudspeaker amplifier. Supply for electret microphone (IM ≤ 300 /C0109A).
34 RECO Output of receiving
35 STI Input for side tone network
36 RAC Input of receiving amplifier for ac
37 G R A resistor connected from this pin to
GND sets the receiving amplification of the circuit; amplifier RA1 can be muted by applying VMP to GR
38 TTXA Time constant of anticlipping in
39 RECIN Input of receiving path; input
impedance is typically 80 k/C0087
40 TXIN Input of intermediate transmit stage,
input resistance is typically 20 kΩ
Preliminary Information 9Rev. A1: 24.01.1995 The U4092B contains two identical series regulators, which provide a supply voltage VMP of 3.3 V at 2 mA suitable for a microprocessor. In speech mode both regulators are active, because V MPS and VB are charged simultaneously by the DC-line interface. The capacitor at V MPS is used to provide the microcomputer with sufficient power during long line interruptions. Thus long flash pulses can be bridged or a LCD display can be turned on for more than 2 seconds after going on hook. When the system is in ringing mode, V B is charged by the on chip ringing power converter. In this mode only one regulator is used to supply V MPS . Power supply V oltage regulator V oltage regulator RFD TXA TXACL OFFSA COMP AFS IMPED CONTR VRING QS VL PD LIDET VLon RFDO ES IMPSEL VMPS VB VMP RPC 95 9628 7 V SAI,SA SACL MIC, DTMF AGA, RA1, RA2 TX MUTE MUT REC, STBAL RECATT 6.3 V Figure 6 Supply of functional blocks is controlled by input voltages VL, VB , Vring and by logic inputs PD and IMPSEL There are four major supply states: 1. Speech condition 2. Power down (pulse dialing) 3. Ringing 4. External supply 1. In speech condition the system is supplied by the line current. If the LIDET-block detects a line voltage above the fixed threshold (1.9 V), the internal signal VLON is activated, thus switching off RFD and RPC and switching on all other blocks of the chip. For line voltages below 1.9 V the switches remain in their quiescent state as shown the diagram. OFFSACOMP disables the group listening feature (SAI, SA, SACL, AFS) below line currents of approximately 10 mA. 2. When the chip is put into Power-down mode (PD = high), e.g. during pulse dialing, the internal switch QS shorts the line and all amplifiers are switched off. In this condition LIDET, voltage regulators and IMPED CONTR are the only active blocks.
Preliminary Information 11Rev. A1: 24.01.1995 GT MICO TIN INLDT TLDT VBG STO VL Zint TXA AFS control AGA Max att. VBG+ TLDR RECO GR STI STN STO SAI SAI GSA SAO Z L RECIN 95 9629 INLDR VL Figure 9 Integration of acoustic feedback suppression circuit into the speech circuit environment A detailed diagram of the AFS (acountic feedback suppression) is given in figure 10. Receive and Transmit signals are first processed by logorithmic rectifiers in 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.
Preliminary Information 13Rev. A1: 24.01.1995 ATAFS (dB) 36 dB ATAFS m ATAFS a GSA o GSA a GSA (dB) not usable RATAFS RATAFS 94 8957 Figure 11 Reducing speaker amplifier gain results in an equal reduction of AFS attenuation Ringing power converter (RPC) RPC transforms the input power at VRING (high voltage/ low current) into an equivalent output power at VB (low voltage/ high current), which is capable of driving the low ohmic loudspeaker. Input impedance at VRING is fixed at 5 k/C0087 and the efficiency of the step down converter is approx. 65%. Ringing frequency detector (RFD) The U4092B offers an output signal for the microcontroller, which is a digital representation of the double ringing frequency. It is generated by a current comparator with hysteresis. Input voltage VRING is transformed into a current via RTHA. Thresholds are 8 /C0109A and 24 /C0109A. RFDO and VRING are in phase. A second comparator with hysteresis is used to enable the output RFDO, as long as the supply voltage for the microprocessor VMP is above 2.4 V (2.9 V).
TELEFUNKEN SemiconductorsU4092 Rev. A1: 24.01.1995Preliminary Information14 Absolute maximum ratings Parameters Symbol Value Unit Line current IL 140 mA DC line voltage V L 12 V Maximum input current Pin 17 IRING 15 mA Junction temperature Tj 125 °C Ambient temperature Tamb –25 to +75 °C Storage temperature Tstg –55 to +150 °C Total power dissipation, Tamb = 60°C Ptot 1 W Thermal resistance Parameters Symbol Value Unit Junction ambient SDIP 40 R thJA 50 K/W
Electrical characteristics
f = 1 kHz, 0 dBm = 775 mVrms, IM = 0.3 mA, IMP = 2 mA, RDC = 130 k/C0087, Tamb = 25°C, RGSA = 560 k/C0087, Zear = 68 nF + 100 /C0087, ZM = 68 nF, pin 31 open, VIMPSEL = GND, VMUTX = GND, unless otherwise specified. Parameters Test conditions / PinSymbol Min. Typ. Max. Unit Figure DC characteristics DC voltage drop over circuitIL = 2 mA IL = 14 mA IL = 60 mA IL = 100 mA V L 4.6 8.8 2.4 5.0 7.5 9.4 5.4 10.0 V 22 Transmission amplifier, IL = 14 mA, VMIC = 2 mV , RGT = 27 k/C0087, unless otherwise specified Adjustment range of transmit gain G T 40 45 50 dB 24 Transmitting amplificationRGT = 12 k/C0087 RGT = 27 k/C0087 G T 39.8 48 49 41.8 dB 24 Frequency response IL /C0119 14 mA, f = 300 to 3400 Hz /C0068G T /C00340.5 dB 24 Gain change with current Pin 31 open IL = 14 to 100 mA /C0068G T /C00340.5 dB 24 Gain deviation Tamb = –10 to +60°C /C0068G T /C00340.5 dB 24 CMRR of microphone amplifier CMRR 60 80 dB 24 Input resistance of MIC amplifier RGT = 12 k/C0087 RGT = 27 k/C0087 R i 75 110 k/C008724 Distortion at line IL > 14 mA V L = 700 mVrms dt 2 % 24 Maximum output voltage IL > 19 mA d < 5% Vmic = 25 mV CTXA = 1 /C0109F V Lmax 1.8 3 4.2 dBm 24 Noise at line psophomet- rically weighted IL > 14 mA G T = 48 dB no –80 –72 dBmp Anti-clipping attack time release time CTXA = 1 /C0109F each 3 dB overdrive 0.5 ms 24
Preliminary Information 15Rev. A1: 24.01.1995 Parameters Test conditions / PinSymbol Min. Typ. Max. Unit Figure Gain at low operating currentIL = 10 mA IMP = 1 mA RDC = 68 k/C0087 Vmic = 1 mV IM = 300 /C0109A G T 40 42.5 dB 24 Distortion at low operating current IL = 10 mA IM = 300 /C0109A IMP = 1 mA RDC = 68 k/C0087 Vmic = 10 mV dt 5 % 24 Line loss compensation IL = 100 mA, RAGA = 20 k /C0087 /C0068G TI –6.4 –5.8 –5.2 dB 24 Mute suppression a) MIC muted (microphone preamplifier IL /C0119 14 mA Mutx = open G TM 60 80 dB 24 pp b) TXA muted (second stage) IMPSEL = open G TTX 60 dB 24 Receiving amplifier, IL = 14 mA, RGR = 62 k, unless otherwise specified, VGEN = 300 mV Adjustment range of receiv- ing gain IL /C0119 14 mA, single ended G R –8 +2 dB 23 Receiving amplification RGR = 62 k/C0087 RGR = 22 k/C0087 G R – 7.75 – 7 1.5 – 6.25 dB 23 Amplification of DTMF sig- nal from DTMF IN to RECO IL /C0119 14 mA V MUTX = VMP G RM 1 4 7 dB 23 Frequency response IL > 14 mA, f = 300 to 3400 Hz /C0068G RF /C00340.5 dB 23 Gain change with current IL = 14 to 100 mA /C0068G R /C00340.5 dB 23 Gain deviation Tamb = –10 to +60°C /C0068G R /C00340.5 dB 23 Ear protection IL /C0119 14 mA VGEN = 11 Vrms EP 1.1 Vrms 23 MUTE suppression DTMF operation IL /C0119 14 mA V MUTX = VMP /C0068G R 60 dB 23 Output voltage d /C0118 2% IL = 14 mA Zear = 68 nF 0.5 Vrms Maximum output current d /C0118 2% Zear = 100 /C0087 4 mA (peak) Receiving noise psophometrically weigthed Zear = 68 nF + 100 /C0087 IL /C0119 14 mA ni –80 –77 dBmp 23 Output resistance Output against GND Ro 10 /C0087 23 Line loss compensation RAGA = 20 k /C0087/C0044 IL = 100 mA /C0068G RI –7.0 –6.0 –5.0 dB 23
TELEFUNKEN SemiconductorsU4092 Rev. A1: 24.01.1995Preliminary Information16 Parameters Test conditions / PinSymbol Min. Typ. Max. Unit Figure Gain at low operating currentIL = 10 mA IMP = 1 mA IM = 300 /C0109A V GEN = 560 mV RDC = 68 k/C0087 G R –8 –7 –6 dB AC impedance V IMPSEL = GND V IMPSEL = VMP Zimp Zimp 570 840 600 900 640 960 /C0087 /C0087 Distortion at low operating current IL = 10 mA IMP = 1 mA V GEN = 560 mV RDC = 68 k/C0087 dR 5 % 23 Speaker amplifier Minimum line current for operation No ac signal ILmin 15 mA 27 Input resistance Pin 24 14 22 k/C008727 Gain from SAI to SAO V SAI = 3 mV , IL = 15 mA, RGSA = 560 k/C0087 RGSA = 20 k/C0087 G SA 35.5 36.5 – 3 37.5 dB Output power Load resistance R L = 50 /C0087, d < 5% V SAI = 20 mV IL = 15 mA IL = 20 mA PSA PSA 3 7 mW Output noise (Input SAI open) psophometrically weighted IL > 15 mA nSA 200 /C0109V psoph 27 Gain deviation IL = 15 mA Tamb = –10 to +60°C /C0068G SA /C00341 dB 27 Mute suppression IL = 15 mA, V L = 0 dBm, V SAI = 4 mV Pin 23 open VSAO –60 dBm 27 Gain change with current IL = 15 to 100 mA /C0068G SA /C00341 dB 27 Resistor for turning off speaker amplifier IL = 15 to 100 mA RG SA 0.8 1.3 2 M /C008727 Gain change with frequencyIL = 15 mA f = 300 to 3400 Hz /C0068G SA /C00340.5 dB 27 Attack time of anti-clipping20 dB over drive tr 5 ms 27 Release time of anti-clipping tf 80 ms 27 DTMF-amplifier Test conditions: IMP = 2 mA, IM = 0.3 mA, V MUTX = VMP Adjustment range of DTMF gain IL = 15 mA Mute active G D 40 50 dB 25 DTMF amplification IL = 15 mA, VDTMF = 8 mV Mute active: MUTX = VMP G D 40.7 41.7 42.7 dB 25 Gain deviaton IL = 15 mA Tamb = –10 to +60°C G D /C00340.5 dB 25
Preliminary Information 17Rev. A1: 24.01.1995 Parameters Test conditions / PinSymbol Min. Typ. Max. Unit Figure Input resistance RGT = 27 k/C0087, RGT = 15 k/C0087 R i 60 180 300 130 k/C008725 Distortion of DTMF signal IL /C0119 15 mA V L = 0 dBm dD 2 % 25 Gain deviation with currentIL = 15 to 100 mA /C0068GD /C00340.5 dB 25 AFS acousting feedback suppression Adjustment range of attenuation IL /C0119 15 mA 0 50 dB 27 Attenuation of transmit gainIL /C0119 15 mA, IINLDT = 0 /C0109A R ATAFS = 30 k/C0087 IINLDR = 10 /C0109A /C0068G T 45 dB 27 Attenuation of speaker amplifier IL /C0119 15 mA IINLDP = 0 /C0109 R ATAFS = 30 k/C0087 IINLDR = 10 /C0109 /C0068G SA 50 dB 27 AFS disable IL /C0119 15 mA VATAFS 1.5 V 27 Supply voltages, Vmic = 25 mV , Tamb = – 10 to + 60°C V MP IL = 14 mA, RDC = 68 k/C0087 IMP = 2 mA V MP 3.1 3.3 3.5 V 22 V MPS IL = 100 mA RDC = inf., I MP = 0 mA V MPS 6.7 V 22 V M IL /C0119 14 mA, IM = 300 /C0109A RDC = 130 k/C0087 V M 1.4 3.3 V 22 V B IB = + 20 mA, IL = 0 mA V B 7 7.6 V 22 Ringing power converter, IMP = 1 mA, IM = 0 Maximum output power V RING = 20.6 V PSA 20 mW 26 Threshold of ring frequency detector RFDO: low to high V HYST = VRING ON – V RING OFF V RINGON VHYST 17.5 11.0 V Input impedance V RING = 30 V R RING 4 5 6 k/C008726 Input impedance in speech mode f = 300 Hz to 3400 Hz I L > 15 mA, V RING = 20V + 1.5Vrms R RINGSP 150 k/C008726 Logic-level of frequency detector V RING = 0 V , V B = 4 V V RING = 25 V V RFDO 0 VMP V 26 Ring detector enable V RING = 25 V , RFDO high VMPON 2.7 2.9 3.1 V 26 Ring detector disable V RING = 25 V , RFDO low VMPOFF 2.2 2.35 2.5 V 26
TELEFUNKEN SemiconductorsU4092 Rev. A1: 24.01.1995Preliminary Information18 Parameters Test conditions / PinSymbol Min. Typ. Max. Unit Figure PD input PD input current PD active, IL > 14 mA V PD = VMP Ipd 9 uA 28 Input voltage PD = active PD = inactive V pd V pd 0.3 V 28 V oltage drop at VL IL = 14 mA, PD = active I L = 100 mA, PD = active V L V L 1.5 1.9 V 28 Input characteristics of IMPSEL Input current IL /C0119 14 mA V IMPSEL = VMP V IMPSEL = GND IIMPSEL IIMPSEL –18 /C0109A /C0109A Input voltage Input high V IMPSEL VMP-0.3V V 28pg Input low V IMPSEL 0.3 V 28 MUTX input Input current V MUTX = VMP V MUTX = GND IMUTX IMUTX –20 –30 /C0109A /C0109A Input voltage Input high V MUTX VMP-0.3V V 28pg Input low V MUTX 0.3 V 28 U4092B – control IMPSEL MODE
0 Line-impedance = 600 /C0087
TXA = on ES = off Speech 0 to Z Line-impedance = 600 /C0087 TXA = off ES = on Transmit-mute 1 to Z Line-impedance = 900 /C0087 TXA = off ES = on Transmit-mute
1 Line-impedance = 900 /C0087
TXA = on ES = off Speech MUTX MODE
0 MIC 1/2 transmit enabled
AFS = on AGA = on TXACL = on Speech Z DTMF transmit enabled receive enable AFS = on AGA = on TXACL = on For answering machine
1 DTMF transmit enabled
AFS = off AGA = off TXACL = off DTMF dialling Logic-level 0 = < (0.3 V) Z = > (1 V) < (VMP – 1 V) or (open input) RECA TT = Receive attenuation STI = Input of sidetone balancing amplifier ES = External supply AFS = Acoustical feedback supression control AGA = Automatic gain adjustment TXACL = Transmit anticlipping control
TELEFUNKEN SemiconductorsU4092 Rev. A1: 24.01.1995Preliminary Information22 94 8861 Figure 20 Typical load characteristic of VB for a minimum DC-characteristic (RDC = 68 k/C0087) and 3 mW loudspeaker output
Preliminary Information 23Rev. A1: 24.01.1995 U4092B 40 39 38 37 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Mico open open 95 9650 VMP 220 nF 150 nF 1 F VL VM V MP 10 F 3 k 47 nF 36 k IM 62 k 3.3 nF 3.3 nF 2 M RGR RGT 1 k 68 nF RDC 600 4.7 nF 22 F IL
1000 F 47 F
50 BC556
2.2 mH220 F SD103A DC VRing 68 nF 1 F 680 k /C0109 /C0109 VM /C0087 /C0087
100 F/C0109
/C0087
10 F/C010910 F/C0109
/C0087 RGSA /C0109 /C0087 IDC IMP /C0109 /C0087 /C0109 /C010947 F/C010910 /C0087
10 F/C0109
/C0109 /C0087 /C0087 VM reference figure for not connected pins S1 = closed: speech mode S2 = closed: ringer mode Figure 21 Basic test circuit
TELEFUNKEN SemiconductorsU4092 Rev. A1: 24.01.1995Preliminary Information24 U4092B 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Mico 95 9649 V L V M V MIC IM V 220 nF 150 nF 1 F RGR 10 F 100 F 62 k RAGA 30 k DC RGT 68 nF V MP RDC 10 F IL 4.7 nF IB V B S1b a open
220 F1000 F
/C0109 /C0109 /C0109 /C0087 /C0087 /C0109 /C0109/C0109/C0109/C0087/C0109 RGSA Line detection: S1a VB (external supply): S1b open pins should be connected as shown in figure 21 ZEAR V L Figure 22 DC characteristics, line detection
Preliminary Information 25Rev. A1: 24.01.1995 U4092B 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Mico 95 9648 V L V M IM V 220 nF 150 nF 1 F RGR
10 F 100 F
220 F 1000 F
4.7 nF VMP open VGEN 22 F ab AC /C0109 /C0109 /C0109 /C0087 /C0109 /C0109/C0109 /C0109 /C0087 /C0087 /C0087
47 F/C0109
Line loss compensation: GRI = GR (at IL = 100 mA) –GR (at IL = 14 mA), S3 = closed Receiving noise: S1a /C0068 Receive amplification: GR = 20*log ( VZEAR/VLR) dB (S1 = b, S2 open) DTMF-control signal: GRM = 20*log (VZEAR/VDTMF) dB (S1 =a, S2 = closed) AC-impedance: (VLR/ (VGEN – VLR)) * ZL Mute suppression: DTMF operation: GR = 20*log (VLR/VZEAR) dB + GR, MUTX = VMP open pins should be connected as shown in figure 21 /C0068 ZEAR VLR VZEAR VDTMF Figure 23 Receiving amplifier
TELEFUNKEN SemiconductorsU4092 Rev. A1: 24.01.1995Preliminary Information26 Input resistance: Ri = U4092B 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Mico 95 9647 V L V M IM V 220 nF 150 nF 1 F RGR 4.7 nF 22 F AC b 25 k25 k a b a open V MP /C0109 /C0109 /C0109 /C0087 /C0109 /C0109 /C0109 /C0087 /C0109 /C0087 /C0109 /C0087
1 F/C0109
/C0087 Transmitting amplification GT = 20*log VL Vmic Line loss compensation: GTI = GT (at IL = 100 mA) –GT (at IL = 14 mA), S3 = closed/C0068 Gain change with current: GTI = GT (at IL = 100 mA) –GT (at IL = 14 mA)/C0068 Common mode rejection ratio: CMRR = 20*log + GT with S1b, S2 = closed, Mute suppression: GTM = 20*log GTTX = 20*log open pins should be connected as shown in figure 21 VCM VL VL (at MUTX = low) VL (at MUTX = open) VL (at IMPSEL = low) VL (at IMPSEL = open) 50 k VL (S2 = closed) VL (S2 = open) S3 = open RDC VL, dt, no Vmic VCM – 1 Figure 24 Transmission amplifier
Preliminary Information 27Rev. A1: 24.01.1995 U4092B 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Mico 95 9643 V L V M IM V 220 nF 150 nF 1 F RGR V 4.7 nF open V GEN3 AC 1 k /C0109 /C0109 /C0109 /C0087 /C0109 /C0109/C0109/C0109 /C0087 /C0109 /C0087 /C0087 ZEAR DTMF-amplifier: 20log (VL/VDTMF) dB Input resistance: (VL50K / (VL – VL50k)) * 50k Open pins should be connected as shown in figure 21 V DTMF VL: S3 = closed VL 50k : S3 = open dD /C0087 /C0087 Figure 25 DTMF amplifier
TELEFUNKEN SemiconductorsU4092 Rev. A1: 24.01.1995Preliminary Information28 1) Max. output power: PSA = (S4 closed)Vsao2 RSAO 2) Threshold of ringing frequency detector: detecting VRFDO, when driving VRING from 2 V to 22 V (VRINGON) and back again (VRINGOFF) (S2 = closed) 3) Input impedance: RRING = (S3 = closed)VRING IRING 4) Input impedance in speech mode (IL > 15 mA):RRINGSP = (S1 = closed)Vring Iring 5) Ring detector enable: detecting VRFDO, when driving VMP from 0.7 V to 3.3 V (VMPON) and back again (VMPOFF) (S5, S3 = closed) Open pins should be connected as shown in figure 21 U4092B 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 95 9644 V SAI
100 F 62 k
4.7 nF IL
47 F 1000 F
2.2 mH220 F SD103A 68 nF 1 F 680 k V SAO 100 nF
1.8 Vpp
V V RING V MP V V RFDO V RING IRING 1.5 V 20 V ramp IRING 20.6 V DC DC DC S1 S2 S3 S4 /C0109 /C0087 /C0109 /C0087/C0109 /C0109 /C0087 /C0109/C0109/C0087 /C0109 Figure 26 Ringing power converter
Preliminary Information 29Rev. A1: 24.01.1995 U4092B 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Mico 95 9646 V M V MIC IINLDR V 220 nF 150 nF 1 F RGR 10 F RGSA 30 k RGT 68 nF RDC 4.7 nF k 220 nF V V 22 F 600 IL /C0109 /C0109 /C0087 /C0087 1 F/C0109 /C0087 /C0109 /C0109/C0109 /C0087 /C0109 /C0087 ZEAR 62 k/C0087 V SAI VSAO, S4 = closed VZIN, S4 = open n SA V L Input impedance: (VZIN/(VSAO – VZIN)) * RIN Gain from SAI to SAO: 20*log (VSAO / VSAI) dB Output power: PSA =VSAO 2 RSAO Attenuation of transmit gain: S1 = closed Open pins should be connected as shown in figure 21 Figure 27 Speaker amplifier
TELEFUNKEN SemiconductorsU4092 Rev. A1: 24.01.1995Preliminary Information30 U4092B 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 95 9645 V M 10 F IM
100 F RGSA
4.7 nF IL 1000 F 47 F IMP
1 FIMUTX
/C0109 /C0109 62 k/C0087 /C0109 /C0109 /C0109 /C0109/C008710 F/C0109 ZEAR Open pins should be connected as shown in figure 21 open Figure 28 Input characteristic
Preliminary Information 31Rev. A1: 24.01.1995
Ordering information
Package: SDIP 40 94 8915 We reserve the right to make changes without further notice to improve technical design. Parameters can vary in different applications. All operating parameters must be validated for each customer application by customer. Should Buyer use TEMIC products for any unintended or unauthorized application, Buyer shall indemnify TEMIC against all claims, costs, damages, and expenses, arising out of, directly or indirectly, any claim of personal damage, injury or death associated with such unintended or unauthorized use. TEMIC TELEFUNKEN microelectronic GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany Telephone: 49 (0)7131 67 2831, Fax Number: 49 (0)7131 67 2412
TELEFUNKEN SemiconductorsU4092 Rev. A1: 24.01.1995Preliminary Information32 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 and 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. Of particular concern is the control or elimination of releases into the atmosphere of these substances which are known as ozone depleting substances (ODSs). The Montreal Protocol (1987) and its London Amendments (1990) will severely restrict the use of ODSs and forbid their use within the next ten years. Various national and international initiatives are pressing for an earlier ban on these substances. TEMIC TELEFUNKEN microelectronic GmbH semiconductor division has been able to use its policy of continuous improvements to eliminate the use of any ODSs listed in the following documents that all refer to the same substances: (1) Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments respectively (2) Class I and II ozone depleting substances in the Clean Air Act Amendments of 1990 by the Environmental Protection Agency (EPA) in the USA and (3) Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C (transitional substances) respectively. TEMIC can certify that our semiconductors are not manufactured with and do not contain ozone depleting substances.