U3760MB-MSD

U3760MB Low-Voltage Standard Telephone Circuit Description TEMIC’s low-voltage telephone circuit, U3760MB, performs all the speech and line interface functions required in an electronic telephone set tone ringer, pulse and DTMF dialing with redial. Electrostatic sensitive device. Observe precautions for handling. Features Speech Circuit D Adjustable dc characteristic D Symmetrical input of microphone amplifier D Receiving amplifier for dynamic or piezo-electric earpieces D Automatic line-loss compensation Dialer D D D D Selectable flashing duration by key pad Pause function Last number redial up to 32 digits Standard low-cost 3.58-MHz crystal or ceramic resonator Tone Ringer D DTMF / pulse switchable D Pulse dialing 66/33 or 60/40 for 10 ppS and 20 ppS or DTMF dialing selectable by pins D Two-tone ringer D Adjustable volume D RC oscillator D Adjustable threshold D Key tone Benefits D Low number of external components D High quality through one-IC solution D One IC for all standards Ordering Information Extended Type Number U3760MB-MSD U3760MB-MFN U3760MB-MFNG3 Package SDIP40 SSO44 SSO44 Remarks Taped and reeled Rev. A3, 19-Feb-98 1 (19) 5V1 1M 220 k Tip HKS 5M 470 1m 220 k HKS BC546 EP 18 k 3k MPSA42 22 k 220 n 2n2 HKS Microphone – amplifier + Control function 2.4 k Sidetone amplifier 3n3 ST Pulse control logic Supply current regulator Control function Receiver attenuation RECIN 2.2 m Receiving amplifier RECO1 100 RECO2 AGC 12 k RDC 39 VBG 1 W VI VRING Supply Power-on-reset VRIAC OUT Tone signal generator 10 k 28 V 10 m 390 100 m 1.8 k 47 n EP Mute control Transmit amplifier VL 680 MODE BM KT DP VDD2 VDD1 MFO MIC1 MIC2 MICO TIN CL 13 V 1W 330 2N5401 33 k 220 m 75V 470 k 47 n 5k 3.58 MHz ÁÁ ÁÁ Ring 10 k U3760MB 100 n 100 n XT XT Clock generator C1 Block Diagram / Applications C2 C3 K e y b o a r d RAM l o g i c Read – write counter C o n t r o l 1 2 3 F1 R1 4 5 6 F2 R2 Figure 1. AGC current generator D/A converter Data latch & decoder ROW & column programmable counter Clock signal oscillator Divider Divider Bandgap reference Comparator with hysteresis 7 8 9 F3 R3 */T 0 # R/P R4 i n t e r f a c e Location latch PRIVACY 47 n MUTE 1n RCK 150 k THA GND1 GND2 8176 ÁÁ 2 (19) 220 k Rev. A3, 19-Feb-98 U3760MB SDIP40 C1 C2 C3 KT XT XT MFO GND 2 GND 1 1 2 3 4 5 6 7 8 9 40 39 38 37 36 35 34 33 C1 1 C2 2 C3 3 n.c. 4 n.c. 5 n.c. 6 MODE KT 7 BM XT 8 HKS XT 9 32 VDD 2 MFO 10 MIC 1 10 MIC 2 11 31 VDD 1 GND 2 11 30 OUT GND 1 12 29 28 RCK MIC 1 13 VL 13 RDC 14 n.c. 15 TIN 16 VI 17 MUTE 18 VBG 19 RECIN 20 10181 SSO44 44 43 42 41 40 39 38 37 36 35 34 R4 R3 R2 R1 n.c. DP MODE BM HKS n.c. VDD 2 VDD 1 OUT R4 R3 R2 R1 DP U3760MB 33 32 U3760MB MICO 12 VRING MIC 2 14 MICO 15 VL 16 RDC 17 TIN 18 VI 19 MUTE 20 VBG 21 RECIN 22 10180 31 RCK 30 VRING 29 VRIAC 28 AGC 27 VRIAC 26 AGC 25 THA 24 ST 23 PRIVACY 22 RECO 1 21 RECO 2 27 THA 26 ST 25 24 23 PRIVACY RECO 1 RECO 2 Rev. A3, 19-Feb-98 3 (19) U3760MB Pin Description PD means protection device SDIP40 1 SSO44 1 Symbol C1 Function Keyboard input C1 PD Configuration 2 2 C2 C2 PD 3 3 C3 C3 PD 15 4 4, 5, 6, 35 7 n.c. KT Not connected Key tone signal output generated for all keys in pulse dialing mode (except Flash + Redial) with a frequency of about 1240 Hz and duration about 50 ms A built-in inverter provides oscillation with an inexpensive 3.579545-MHz crystal or ceramic resonator XT PD KT 5 8 XT 6 9 XT XT 40P PD 40P 7 10 MFO Output of DTMF DTMF output frequency Specified Actual (HZ) (Hz) R1 697 699 R2 770 766 R3 852 848 R4 941 948 C1 1209 1216 C2 1336 1332 C3 1477 1472 Error (%) +0.28 –0.52 –0.47 +0.74 +0.57 –0.30 –0.34 MFO 9 8 12 11 GND 1 GND 2 Ground 1 connected with ground 2 4 (19) Rev. A3, 19-Feb-98 U3760MB SDIP40 10 SSO44 13 Symbol MIC 1 1V 50K MIC1 11 14 MIC 2 12 15 MICO Transmit pre-amp output which is normally capacitively coupled to Pin TIN MICO PD 13 16 VL Positive supply voltage input to the device. The current through this pin is modulated by the transmit signal. VL PD 16V RDC 14 17 RDC AGC PD RDC 1V 16 18 TIN Input to the line output driver amplifier. Transmit AGC is applied to this stage. This internal voltage bias line must be connected to VL via an external resistor, RB, which dominates the ac input impedance of the circuit and should be 680 Ω for 600-W input impedance or 1.2 kΩ for a 900-Ω input impedance. 5.6K TIN PD 16V 17 19 VI VI 16V PD Rev. A3, 19-Feb-98 Ê ÊÊ ÊÊ Ê An external resistor (1 W) is required from this pin to GND to control the dc input impedance of the circuit. It has a nominal value of 39 W for low-voltage operation. Values up to 100 W may be used to increase the available transmit output voltage swing at the expense of low-voltage operation. ÊÊ Ê Ê Ê Non-inverting input of microphone amplifier MIC2 50K 1V VI Ê VI Function Inverting input of microphone amplifier Configuration PD PD VI 1V 16K PD VL PD 5 (19) U3760MB SDIP40 18 SSO44 20 Symbol MUTE Function Pin for testing MUTE PD 6.7V Configuration 30K VBG 19 21 VBG Pin for test mode VBG 6.7V PD 20 22 RECIN Receive amplifier input. The receiving amplification is regulated by an AGC. Output of the receive amplifier. Dynamic transducers with a minimum impedance of 100 W can be directly driven by these outputs. RECIN 60K 21 23 RECO2 RECO2 RECO1 6.7V PD 23 25 PRIVACY Input for handset mute PRIVACY PD 6V 24 26 ST The output of the sidetone cancellation signal, which requires a balanced impedance of 8 to 10 times the subscriber’s line impedance to be connected to Pin VL. Ringer threshold adjustment ST PD 16V 25 27 THA VRIAC THA PD 6V 6V 20K 26 28 AGC The range of transmit and receive gain variations between short and long loops may be adjusted by connecting a resistor RAGC from this pin to (GND). This pin can be left open to set AGC out of action. Ringing supply AGC PD RDC 27 29 VRIAC 50V PD 10K 6 (19) Rev. A3, 19-Feb-98 ÊÊÊ VRIAC 70K Ê ÊÊ 12K Ê Ê ÊÊ Ê Ê ÊÊ 22 24 RECO1 6V 140K Ê Ê Ê Ê VL VL 60K VI 40K 0.6V MUTE 1V Ê 1V VL PD U3760MB SDIP40 28 SSO44 30 Symbol VRING Function DC supply voltage for the tone ringer is limited to 30 V with integrated Z-diode. Configuration VRING 30V PD 6.5K 200 OUT PD 50V 29 31 RCK RC clock oscillator for ringer RCK PD 6V 6V 30 32 OUT Buzzer output VRING PD 30V 200 6.5K OUT 50V PD 31 33 VDD 1 Supply output of dialer section 6V 6V PD VDD1 32 34 VDD 2 Supply input of dialer section VDD2 PD 33 36 HKS Hook switch input. HKS = 1: On-hook state. Chip in sleep mode, no operation. HKS = 0: Off-hook state. Chip enable for normal operation. If BM = floating pulse, dialing with 3:2 B/M ratio If BM is connected to ground, pulse dialing with a B/M ratio of 2:1 Pulling mode pin to VDD places the dialer in tone mode. Pulling mode pin to GND places the dialer in pulse mode ( 20 ppS ). If the mode pin is left floating, the dialer is in pulse mode ( 10 ppS) N-channel open drain pulse dialing output. Flash key will cause DP to be active in either DTMF mode or pulse mode. HKS PD 34 37 BM B/M PD 35 38 MODE MODE 36 39 DP DP Rev. A3, 19-Feb-98 Ê ÊÊ ÊÊ 3.4V 0.8V Ê Ê DP VL 7 (19) Á ÁÁ Á ÁÁ Á Á Á ÁÁÁ ÁÁ Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁ Á Á Á ÁÁÁ ÁÁ Á Á ÁÁ Á ÁÁ ÁÁ Á Á Á ÁÁÁ ÁÁ Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁ ÁÁ Á ÁÁ Á Á Á ÁÁÁ ÁÁ Á Á Á ÁÁÁ ÁÁ Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á Á ÁÁ Á Á Á Á Á Á ÁÁ Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á Á ÁÁ Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á ÁÁ Á Á Á 1. ÁÁÁÁÁ ÁÁÁ ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁ ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁÁ ÁÁ ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁ : C1 1 4 7 /T C2 2 5 8 0 C3 3 6 9 # F1 F2 F3 R/P The R/P key can execute the redial function only as the first key-in after off-hook; otherwise, it executes the pause function. Redialing 2. Normal Dialing D :/T: : and pulse-to-tone key D R/P: Redial and pause function key D F1, F2, F3: Flash keys Keyboard Operation U3760MB 8 (19) SDIP40 37 OFF HOOK OFF HOOK 40 39 38 Dialing length is unlimited, but redial is inhibited if length oversteps 32 digits. D1, D2, ..., Dn will be dialed out. SSO44 41 44 43 42 , D1 , Symbol R1 R4 R3 R2 D1 , D2 Function Keyboard input , , ..., D2 Dn , ..., BUSY, Come Dn ON HOOK ⊥ R4 R3 R1 R2 Configuration , R1 R2 R3 R4 OFF HOOK PD PD PD PD Rev. A3, 19-Feb-98 , R/P U3760MB HKS 10626 KEY IN 3 2 R/P tKID DP tPDP MUTE tPDP tKID tIDP tB tM tIDP tPDP KT LOW MFO OSC ON HOOK Oscillation OFF HOOK Normal dialing Oscillation Auto dialing Figure 2. Pulse mode 10627 HKS KEY IN tKID tKRD tKRD tKID tITP MFO tTD MUTE tITP tITP LOW KT HIGH DP OSC Oscillation Oscillation Figure 3. DTMF mode normal dialing Rev. A3, 19-Feb-98 9 (19) U3760MB 10628 HKS KEY IN tKID R/P MFO tTD MUTE tITP tITP KT DP LOW HIGH OSC Oscillation Figure 4. DTMF auto dialing Access Pause ÁÁ Á Á ÁÁ Á Á ÁÁ ÁÁ Á Á ÁÁ Á Á ÁÁ Á Á ÁÁ ÁÁ Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á ÁÁ Á Á ÁÁ ÁÁ Á Á ÁÁ Á Á ÁÁ ÁÁ Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á ÁÁ Á Á ÁÁ ÁÁ Á OFF HOOK , D1 , D2 , R/P , D3 , ..., Dn’ 1. 2. The pause function can be stored in memory. The pause function is executed in normal dialing and redialing. 10629 HKS R/P KEY IN 4 tKID 2 2 M tIDP tB tM tIDP tPDP tIDP DP tPDP MUTE tP KT MFO OSC LOW Oscillation Figure 5. Pause function 10 (19) Rev. A3, 19-Feb-98 U3760MB Pulse-to-Tone ( /T) : Á ÁÁ Á Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á Á ÁÁ Á Á Á Á ÁÁ Á ÁÁ Á Á ÁÁ Á Á Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á ÁÁ Á Á Á Á ÁÁ Á ÁÁ Á Á Á ÁÁ Á Á Á Á ÁÁ Á ÁÁ Á Á ÁÁ Á Á Á Á ÁÁ Á ÁÁ Á Á ÁÁ Á Á Á Á ÁÁ Á ÁÁ OFF HOOK , D1 , D2 , ..., Dn , :/T , D1’ , D2’ , ..., Dn’ 1. If the mode switch is set to pulse mode, then the output signal will be: D1, D2, ..., Dn, Pause (3.6 s), D1’, D2’ ,..., Dn’ (Pulse) (Tone) 2. If the mode switch is set to tone mode, then the output signal will be: D1, D2, ..., Dn, (Tone) * (Tone) , D1’, D2’, ..., Dn’ (Tone) 3. The dialer remains in tone mode when the digits have been dialed out and can be reset to pulse mode only by going on-hook. HKS 10630 KEY IN 4 2 */T 8 tKID DP tIDP tIDP tPDP MUTE tB tM tP KT MFO OSC Oscillation Figure 6. Pulse-to-tone operation Rev. A3, 19-Feb-98 11 (19) U3760MB Á Á Á Á Á Á Á ÁÁ Á Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á Á Á Á Á Á ÁÁ Á Á Á Á Á Á Á Á Á ÁÁ Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á Á Á Á Á ÁÁ Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á Á Á Á ÁÁ Á Á Á Á Á Á Á Á Á Á Á ÁÁ Á Á Á Á ÁÁ Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ Á Á Á Á Á ÁÁ Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á Á Á Á Á ÁÁ Á Á Á Á Á Á Á Á ÁÁ Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á Á Á ÁÁ Á Á Á ÁÁÁ Á Á ÁÁ Á Á ÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ Á Á ÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁ Á ÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ Á Á OFF HOOK , Fn 1. 2. OFF HOOK , Fn LNB = D1, D2, D3, ..., Dn OFF HOOK , D1 LNB = D3, ..., Dn HKS KEY IN F tKID DP MFO MUTE KT OSC Flash (F1 or F2 or F3) The flash key cannot be stored as a digit in memory. The flash key has first priority among the keyboard functions. The system will return to the initial state after the flash pause time has elapsed. , D1 , D2 , D3 , ..., Dn , D2 , Fn , D3 , ..., Dn 10631 4 tFB tFP tTD tITP LOW Oscillation Figure 7. Flash operation tKID tKRD tPDP tIDP tTD = key active in debounce = key release debounce = pre-digit pause = inter-digit pause = DTMF output duration tITP tFB tFP tP = intertone pause = flash break time = flash pause time = pause time 12 (19) Rev. A3, 19-Feb-98 U3760MB Absolute Maximum Ratings Parameters Line current DC line voltage Junction temperature Ambient temperature Storage temperature Total power dissipation, Tamb = 60°C SSO44 SDIP40 Junction ambient SSO44 SDIP40 RthJA 70 50 k/W Symbol IL VL Tj Tamb Tstg Ptot Value 140 14 125 – 25 to + 75 – 55 to + 150 0.9 1.3 Unit mA V °C °C °C W Electrical Characteristics Speech Circuit Reference point Pin GND, f = 1000 Hz, 0 dBm = 775 mVrms, RDC = 39 Ω / 1 W, Tamb = 25°C, unless otherwise specified Parameters Line voltage Test Conditions / Pin IL = 5 mA IL = 20 mA IL = 30 mA IL = 73 mA Ri IL = 20 mA, S5 = open RAGC = 12 kW, IL = 73 mA IL > 20 mA, GS = 48dB IL Symbol VL Min. 1.2 Typ. 4.0 4.5 6.4 Ri Gs DGs no GSTA 45 46.8 – 4.8 80 47.8 –6 120 48.8 –7 – 72 20 Max. 1.5 Unit V V V V kΩ dB dB dBmp dB dBm dBm dB Transmit and sidetone Input resistance Gain Line-loss compensation Noise at line weighted psophometrically Sidetone reduction DTMF amplifier Volume range d < 5% DTMF output level low frequency group Preemphasis between highand low-level frequency group Receiving amplifier Gain Line-loss compensation Receiving noise at earphone weighted psophometrially Gain change when muted Output voltage push-pull y 20 mA w 10 1.3 –8 1 15 Single tone, IL 20 mA IL = 20 mA, S5 = closed PPRE = PHLG – PLLG, S5 = closed VL VL PPRE –4 3 IL 20 mA IL = 73 mA IL = 73 mA w GR DGR ni 3 – 4.7 –6 – 77.5 5 –7 – 71 dB dB dBm IL 20 mA IL 20 mA, Zear = 68 nF, 100 W in series Supply voltage (for internal use only) Output voltage IL 20 mA dialing mode y y GRM VRECO 24 0.8 29 0.9 34 dB VRMS y VDD 1 2.3 6.3 V Rev. A3, 19-Feb-98 13 (19) U3760MB DC Characteristics Dialer VDD2 = 2.7 V, fOSC = 3.58 MHz, all outputs unloaded, S9b Parameters Memory retention current Preemphases DTMF distortion DP output sink current Keyboard input drive current Keyboard input sink current Keyboard resistance Key tone output current Key tone frequency Test Conditions / Pins HKS = 1, VDD2 = 1.0 V Column/Row RL = 5 kW VPO = 0.5 V VI = 0 V VI = 2.7 V Symbol IMR d IPL IKD IKS 0.5 30 200 400 Min. 1 Typ. 2 – 30 Max. 0.2 3 – 23 Unit mA dB dB mA mA t = 50 ms 1240 "1 5 mA kW mA Hz AC Characteristics Dialer Parameters Keypad active in debounce Key release debounce Pre-digit pause Inter-digit pause ( auto dialing ) Make/break ratio DTMF output duration Inter-tone pause Flash break time F1 F2 F3 Flash pause time Test Conditions / Pins Symbol tKID tKRD tPDP tPDP tIDP tIDP M/B tTD tITP tFB Min. Typ. 20 20 40 33.3 800 500 40:60 33:67 87 87 94 250 600 3.6 tP 3.6 Max. Unit ms ms ms ms ms ms % % ms ms ms ms ms s s s s B/M pin = floating 10 ppS B/M pin = low 10 ppS 20 ppS B/M pin = floating B/M pin = low Auto dialing Auto dialing R1 grounded R2 grounded R3 grounded F1 F2 F3 tFP Pause time 14 (19) Rev. A3, 19-Feb-98 U3760MB Electrical Characteristics Tone Ringer fRCK = 4 kHz, VRING = 20 V, Tamb = 25_C, reference point GND, unless otherwise specified Parameters Supply current, outputs open Switch-on threshold Switch-off threshold Ringing frequency Test Conditions / Pins VRIAC = 20 V VRIAC VRIAC R = 150 kΩ, C = 1 nF VRIAC > VRON Symbol IRING VRon VRoff f1H f1L f2 toff 937 752 11.5 Min. 2.1 Typ. Max. 3.8 Unit mA V V 1083 868 14.0 Hz Hz Hz ms 23.5 5.6 1010 808 12.5 65 Audio sequence frequency Turn-off delay See figure 8 Volt VRING 0 12459 t VRIAC 0 t OUT Melody t 0 toff Figure 8. Turn off delay time Rev. A3, 19-Feb-98 15 (19) Basic Test Circuit U3760MB I/O OUT I/O IN Á Á To tester To tester 16 (19) Rev. A3, 19-Feb-98 12460 a To tester VMIC To tester VGEN 100 mV 100n 220 m a S9 I/O IN IN b S7 VGEN 100 m 300 mV / 1 kHz 600 IL VDD 25k 8.2k S5 220n 25k 1m S8 10k S6 MIC2 MFO b VDD1 MIC1 BM KT DP VDD2 MODE HKS XT S11 XT MICO TIN VL 1.5k VL 13V Clock 4.7k 1 ST 47n RECIN VI C1 C2 C3 R1 R2 R3 R4 MUTE RECO1 2.2n 620 3.58 MHz IN IN IN IN IN IN IN I/O U3760MB RECO2 AGC RDC VBG VRING VRIAC OUT THA VRECO 2.2 m 330 100 m 12k S1 47n 1n 150k 39 PRIVACY RCK GND2 GND1 VRING VRIAC 68n U3760MB Formulas for Parameters of Electrical Characteristics of Speech Circuit Formulas refer to the basic test circuit. If not otherwise specified, switches in basic test circuit are inactive. Transmit gain GS + 20 log VL VMIC VMIC = 3 mV/1 kHz, S5 = open Receiving gain GR + 20 log VRECO VL RX-mode: VGEN = 300 mV/1 kHz, S7b Line-loss compensation transmit DGS GS(at IL 73 mA)–GS(at IL + + + 20 mA) TX-mode: VMIC = 3 mV/1 kHz, S5 = open Sidetone reduction GSTA + 20 log VL (in TX–mode) VRECO ) GR TX-mode: VMIC = 3 mV/1 kHz, S5 = open Line-loss compensation receive DGR GR(at IL 73 mA)–GR(at IL + + + 20 mA) RX-mode: VGEN = 300 mV/1 kHz, S7b Gain change when muted GRM + 20 log VRECO (Mute VL + inactive)–20 log VRECO (Mute VL + active) VGEN = 100 mV/1 kHz, S5 = open, S8 = open Input impedance of microphone amplifier 50 k Ri + VL (s6 VL(S6 + closed) –1 + open) TX-mode: VMIC = 3 mV/1 kHz, S5 = open Rev. A3, 19-Feb-98 17 (19) U3760MB Package Information Package SDIP40 Dimensions in mm 37.4 36.9 4.9 4.3 0.7 3.3 0.53 0.48 33.782 1.778 0.38 0.20 17.2 16.0 13.9 13.7 15.34 15.14 technical drawings according to DIN specifications 1 13027 Package SSO44 Dimensions in mm 18.05 17.80 9.15 8.65 7.50 7.30 2.35 0.3 0.8 16.8 44 23 0.25 0.10 0.25 10.50 10.20 technical drawings according to DIN specifications 13040 1 22 18 (19) Rev. A3, 19-Feb-98 U3760MB Ozone Depleting Substances Policy Statement It is the policy of TEMIC Semiconductor 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. It is particular concern to control or eliminate releases of those substances into the atmosphere which are known as ozone depleting substances ( ODSs). The Montreal Protocol ( 1987) and its London Amendments ( 1990) intend to 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 Semiconductor GmbH has been able to use its policy of continuous improvements to eliminate the use of ODSs listed in the following documents. 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 3. Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C ( transitional substances ) respectively. TEMIC Semiconductor GmbH can certify that our semiconductors are not manufactured with ozone depleting substances and do not contain such substances. We reserve the right to make changes to improve technical design and may do so without further notice. Parameters can vary in different applications. All operating parameters must be validated for each customer application by the customer. Should the buyer use TEMIC products for any unintended or unauthorized application, the 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 Semiconductor GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany Telephone: 49 ( 0 ) 7131 67 2831, Fax number: 49 ( 0 ) 7131 67 2423 Rev. A3, 19-Feb-98 19 (19)