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 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 Dialer Tone Ringer D DTMF / pulse switchable D Pulse dialing 66/33 or 60/40 for 10 ppS and 20 ppS or D Two-tone ringer DTMF dialing selectable by pins D Adjustable volume D RC oscillator D Key tone D Adjustable threshold 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 Rev. A3, 19-Feb-98 Package SDIP40 SSO44 SSO44 Remarks Taped and reeled 1 (19) 2 (19) 9 F3 # R/P 8 7 */T 0 R4 R3 R2 R1 RCK GND2 GND1 150 k 1n MUTE 47 n PRIVACY 6 F2 5 4 3 F1 2 1 C3 C2 C1 i n t e r f a c e K e y b o a r d Location latch RAM Read – write counter BM l o g i c C o n t r o l Clock signal oscillator Data latch & decoder MODE Divider Divider Supply ROW & column programmable counter Pulse control logic KT DP VDD2 22 k D/A converter MIC2 MICO 100 n Bandgap reference Tone signal generator Power-on-reset Supply current regulator Comparator with hysteresis Control function 33 k CL 220 k ST 2.4 k VL HKS 8176 Receiving amplifier VI THA OUT VRIAC VRING 10 k 100 47 n VBG 1 W RDC 39 680 HKS 3n3 AGC 12 k RECO2 RECO1 2.2 m Receiver attenuation RECIN Sidetone amplifier 2n2 2N5401 Transmit amplifier 3k Control function TIN MPSA42 220 n AGC current generator Microphone – amplifier + MIC1 Mute control VDD1 MFO 220 m 18 k 220 k 1m 10 k 28 V 10 m 100 m 390 1.8 k EP 330 13 V 1W 470 Clock generator HKS 5k 47 n EP 5V1 ÁÁ XT 470 k BC546 1M 5M Tip Block Diagram / Applications Ring 75V ÁÁ ÁÁ XT 3.58 MHz 100 n 220 k U3760MB Figure 1. Rev. A3, 19-Feb-98 U3760MB SDIP40 SSO44 C1 1 40 R4 C1 1 44 R4 C2 2 39 R3 C2 2 43 R3 C3 3 38 R2 C3 3 42 R2 KT 4 37 R1 n.c. 4 41 R1 XT 5 36 DP n.c. 5 40 n.c. XT 6 35 n.c. 6 39 DP MODE MFO 7 KT 7 34 38 MODE BM XT 8 37 BM GND 2 8 33 HKS XT 9 36 9 32 VDD 2 HKS GND 1 MFO 10 35 n.c. MIC 1 10 31 VDD 1 GND 2 11 34 VDD 2 GND 1 12 33 VDD 1 MIC 1 13 32 OUT MIC 2 14 31 RCK MICO 15 30 VRING VL 16 29 VRIAC MIC 2 11 30 U3760MB MICO 12 29 VL 13 28 RDC 14 RCK VRING 27 VRIAC n.c. 15 26 AGC TIN 16 25 THA 24 ST VI 17 23 PRIVACY MUTE 18 U3760MB OUT 28 RDC 17 AGC 27 THA TIN 18 26 ST VI 19 VBG 19 22 RECO 1 MUTE 20 25 PRIVACY RECIN 20 21 RECO 2 VBG 21 24 RECO 1 23 RECO 2 10181 RECIN 22 10180 Rev. A3, 19-Feb-98 3 (19) U3760MB Pin Description PD means protection device SDIP40 1 SSO44 1 Symbol C1 Function Keyboard input Configuration C1 PD 2 2 C2 C2 PD 3 3 C3 C3 PD 15 4, 5, 6, 35 n.c. Not connected 4 7 KT 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 5 6 8 9 XT A built-in inverter provides oscillation with an inexpensive 3.579545-MHz crystal or ceramic resonator KT XT PD XT XT 40P 40P PD 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 9 12 GND 1 8 11 GND 2 4 (19) Error (%) +0.28 –0.52 –0.47 +0.74 +0.57 –0.30 –0.34 MFO Ground 1 connected with ground 2 Rev. A3, 19-Feb-98 U3760MB SDIP40 10 SSO44 13 Symbol MIC 1 Function Inverting input of microphone amplifier Configuration Ê VI 1V 50K PD MIC1 11 14 MIC 2 Non-inverting input of microphone amplifier MIC2 Ê Ê Ê Ê Ê 50K 1V VI PD 12 15 MICO VI Transmit pre-amp output which is normally capacitively coupled to Pin TIN 1V 16K 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 PD 14 16 17 18 RDC TIN 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. Input to the line output driver amplifier. Transmit AGC is applied to this stage. Ê AGC PD RDC PD 19 Rev. A3, 19-Feb-98 VI 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. ÊÊ ÊÊ Ê 1V 5.6K TIN 16V PD 17 VL VI 16V PD 5 (19) U3760MB SDIP40 18 SSO44 20 Symbol MUTE Function Pin for testing Configuration Ê Ê Ê Ê VBG 30K MUTE MUTE 6.7V PD 19 21 VBG VL Pin for test mode VBG 6.7V PD 20 22 21 22 24 23 RECIN RECO1 RECO2 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. 60K RECIN VL 60K RECO2 RECO1 6.7V PD 23 25 Ê ÊÊ Ê Ê Ê Ê Ê VI PRIVACY Input for handset mute PRIVACY 6V 40K 0.6V 6V PD 24 25 26 27 ST THA 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. ST 16V PD Ê VRIAC Ringer threshold adjustment 140K 12K THA 20K 6V 6V PD 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. 29 VRIAC 1V AGC PD PD Ringing supply 70K VRIAC 50V PD 6 (19) Ê Ê Ê VL RDC 27 1V 10K Ê ÊÊ Rev. A3, 19-Feb-98 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 OUT 50V PD 29 31 RCK 200 6.5K ÊÊÊÊ Ê 3.4V RC clock oscillator for ringer 0.8V RCK 6V 6V PD 30 32 OUT Buzzer output VRING PD 30V 200 6.5K OUT Ê Ê 50V PD 31 33 VDD 1 VL Supply output of dialer section 6V VDD1 6V PD 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. HKS PD 34 35 36 37 38 39 Rev. A3, 19-Feb-98 BM MODE DP 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. B/M PD MODE DP DP 7 (19) U3760MB SDIP40 37 SSO44 41 Symbol R1 Function Keyboard input Configuration R1 PD 38 42 R2 R2 PD 39 43 R3 R3 PD 40 44 R4 R4 PD Keyboard Operation ÁÁ ÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ : ÁÁÁÁÁÁ ÁÁ ÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ⊥ ÁÁÁÁÁ ÁÁ ÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ C1 1 4 7 /T C2 2 5 8 0 C3 3 6 9 # F1 F2 F3 R/P R1 R2 R3 R4 D :/T: : and pulse-to-tone key D R/P: Redial and pause function key D F1, F2, F3: Flash keys ÁÁ Á ÁÁÁÁÁÁ ÁÁÁÁÁ Á ÁÁÁ ÁÁ Á ÁÁ Á ÁÁÁ ÁÁ Á ÁÁÁ ÁÁ Á ÁÁÁ ÁÁ Á ÁÁÁ ÁÁ Á ÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁ Á Á ÁÁ Á ÁÁ Á ÁÁ Á ÁÁ Á ÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁ Normal Dialing OFF HOOK , D1 , D2 , ..., Dn 1. D1, D2, ..., Dn will be dialed out. 2. Dialing length is unlimited, but redial is inhibited if length oversteps 32 digits. Redialing ÁÁ Á ÁÁÁÁÁ ÁÁÁÁ Á ÁÁ Á ÁÁÁ ÁÁ Á ÁÁ Á ÁÁ Á ÁÁÁ ÁÁ Á ÁÁÁ ÁÁ Á ÁÁÁÁÁÁ ÁÁÁÁÁ Á ÁÁÁÁÁ ÁÁÁÁ Á ÁÁ Á ÁÁÁÁÁÁ ÁÁÁÁÁ Á ÁÁ Á ÁÁÁ ÁÁ Á ÁÁ ÁÁÁÁÁ ÁÁ ÁÁÁ ÁÁ ÁÁ ÁÁÁ ÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁ ÁÁÁÁÁÁ ÁÁ ÁÁÁ Á ÁÁ ÁÁÁÁÁ ÁÁ ÁÁÁ ÁÁ ÁÁ ÁÁÁ ÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁ ÁÁÁÁÁÁ ÁÁ ÁÁÁ Á OFF HOOK , D1 , D2 , ..., Dn BUSY, Come ON HOOK , OFF HOOK , 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. 8 (19) Rev. A3, 19-Feb-98 U3760MB 10626 HKS 3 KEY IN 2 R/P tKID tKID tPDP DP tPDP tIDP tB tIDP tPDP tM MUTE KT LOW MFO OSC ON HOOK Oscillation Oscillation OFF HOOK Normal dialing Auto dialing Figure 2. Pulse mode 10627 HKS KEY IN tKID tKRD tKRD tKID tITP MFO tTD tITP tITP MUTE LOW KT HIGH DP OSC Oscillation Oscillation Figure 3. DTMF mode normal dialing Rev. A3, 19-Feb-98 9 (19) U3760MB 10628 HKS R/P KEY IN tKID MFO tTD tITP tITP MUTE LOW KT HIGH DP Oscillation OSC Figure 4. DTMF auto dialing Access Pause ÁÁ ÁÁÁÁÁÁ ÁÁ ÁÁÁ ÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁ ÁÁ ÁÁÁÁÁÁ ÁÁ ÁÁÁ ÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁ ÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁ Á ÁÁ Á Á ÁÁ Á ÁÁ ÁÁÁÁ ÁÁ Á Á ÁÁ Á ÁÁ Á ÁÁ Á Á ÁÁÁ ÁÁ ÁÁÁ ÁÁÁ ÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁ OFF HOOK , D1 , D2 , R/P , D3 1. The pause function can be stored in memory. 2. The pause function is executed in normal dialing and redialing. , ..., Dn’ 10629 HKS KEY IN 4 2 R/P tKID 2 M DP tPDP tIDP tB tM tIDP tPDP tIDP MUTE tP KT MFO OSC LOW Oscillation Figure 5. Pause function 10 (19) Rev. A3, 19-Feb-98 U3760MB : Pulse-to-Tone ( /T) ÁÁÁÁÁÁ Á ÁÁÁÁÁ Á ÁÁ Á ÁÁÁ ÁÁ Á ÁÁÁ ÁÁ Á ÁÁ Á ÁÁÁ ÁÁ Á ÁÁÁ ÁÁ Á ÁÁÁ ÁÁ Á ÁÁÁ ÁÁ Á ÁÁÁ ÁÁ Á ÁÁ Á ÁÁÁ ÁÁ Á ÁÁÁ ÁÁ Á ÁÁÁ ÁÁ Á ÁÁÁÁ ÁÁÁ Á : Á ÁÁÁÁÁÁ ÁÁ ÁÁÁ ÁÁÁ ÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁ ÁÁÁ ÁÁÁ Á ÁÁÁÁ ÁÁÁ Á Á ÁÁÁÁÁÁ ÁÁ ÁÁÁ ÁÁÁ ÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁ ÁÁÁ ÁÁÁ Á ÁÁÁÁ ÁÁÁ Á OFF HOOK 1. , D1 , D2 , ..., Dn , /T , D1’ , D2’ , ..., Dn’ 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) 2. (Tone) If the mode switch is set to tone mode, then the output signal will be: D1, D2, ..., Dn, (Tone) 3. * , D1’, D2’, ..., Dn’ (Tone) (Tone) 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 KEY IN 10630 4 2 */T 8 tKID DP tPDP MUTE tIDP tIDP tB tM tP KT MFO OSC Oscillation Figure 6. Pulse-to-tone operation Rev. A3, 19-Feb-98 11 (19) U3760MB Flash (F1 or F2 or F3) ÁÁ ÁÁÁÁÁÁ ÁÁÁ ÁÁÁ Á ÁÁ ÁÁÁÁÁÁ ÁÁÁ ÁÁÁ Á ÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁ Á ÁÁ Á ÁÁÁ OFF HOOK , Fn 1. The flash key cannot be stored as a digit in memory. The flash key has first priority among the keyboard functions. 2. The system will return to the initial state after the flash pause time has elapsed. ÁÁ ÁÁÁÁÁÁ ÁÁÁ ÁÁÁ ÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁÁ Á ÁÁ ÁÁÁÁÁÁ ÁÁÁ ÁÁÁ ÁÁ Á ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁÁ Á ÁÁÁÁ ÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁ Á ÁÁ Á Á ÁÁÁ ÁÁÁÁ ÁÁ Á ÁÁ Á ÁÁ Á ÁÁ Á ÁÁ Á ÁÁÁ Á ÁÁÁ ÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁ Á ÁÁÁÁÁÁ ÁÁÁÁÁ Á ÁÁÁ ÁÁ Á ÁÁÁ ÁÁ Á ÁÁ Á ÁÁÁÁ ÁÁÁ Á ÁÁÁ ÁÁ Á ÁÁÁ ÁÁ Á ÁÁÁ ÁÁ Á ÁÁÁ ÁÁ Á ÁÁÁ ÁÁ Á ÁÁÁÁ ÁÁÁ Á ÁÁ ÁÁÁÁÁÁ ÁÁÁ ÁÁÁ ÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁÁ Á ÁÁ ÁÁÁÁÁÁ ÁÁÁ ÁÁÁ ÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁÁ Á OFF HOOK , Fn , D1 , D2 , D3 , ..., Dn D1 , D2 , Fn , D3 , ..., Dn LNB = D1, D2, D3, ..., Dn OFF HOOK , LNB = D3, ..., Dn 10631 HKS KEY IN F 4 tKID DP tFB tFP MFO tTD tITP MUTE LOW KT OSC 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 12 (19) tITP tFB tFP tP = intertone pause = flash break time = flash pause time = pause time Rev. A3, 19-Feb-98 U3760MB Absolute Maximum Ratings Parameters Symbol IL VL Tj Tamb Tstg Value 140 14 125 – 25 to + 75 – 55 to + 150 Unit mA V °C °C °C SSO44 SDIP40 Ptot 0.9 1.3 W SSO44 SDIP40 RthJA 70 50 k/W Line current DC line voltage Junction temperature Ambient temperature Storage temperature Total power dissipation, Tamb = 60°C Junction ambient 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 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 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 Min. 1.2 Typ. Max. 1.5 Unit V V V V 4.0 4.5 6.4 Ri Gs DGs no 45 46.8 – 4.8 80 47.8 –6 120 48.8 –7 – 72 kΩ dB dB dBmp GSTA 10 15 20 dB VL VL 1.3 –8 –4 dBm dBm PPRE 1 3 dB GR DGR ni 3 – 4.7 5 –7 – 71 dB dB dBm y y GRM VRECO 24 0.8 34 dB VRMS y VDD 1 2.3 6.3 V y 20 mA IL w Single tone, IL 20 mA IL = 20 mA, S5 = closed PPRE = PHLG – PLLG, S5 = closed w IL 20 mA IL = 73 mA IL = 73 mA 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 Rev. A3, 19-Feb-98 Symbol VL –6 – 77.5 29 0.9 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 Min. Typ. 1 2 – 30 d IPL IKD 0.5 30 IKS 200 t = 50 ms Max. 0.2 3 – 23 400 "1 5 Typ. 20 20 40 33.3 800 500 40:60 33:67 87 87 Max. 1240 Unit mA dB dB mA mA 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 Pause time 14 (19) Test Conditions / Pins 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 Symbol tKID tKRD tPDP tPDP tIDP tIDP M/B tTD tITP tFB Min. 94 250 600 tFP 3.6 tP 3.6 Unit ms ms ms ms ms ms % % ms ms ms ms ms s s s s 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 Audio sequence frequency Turn-off delay Test Conditions / Pins VRIAC = 20 V VRIAC VRIAC R = 150 kΩ, C = 1 nF VRIAC > VRON See figure 8 Symbol IRING Min. 2.1 VRon VRoff f1H f1L f2 toff Typ. Max. 3.8 Unit mA 23.5 5.6 937 752 11.5 1010 808 12.5 65 V V 1083 868 14.0 Hz Hz Hz ms 12459 Volt VRING 0 t VRIAC 0 t OUT Melody t 0 toff Figure 8. Turn off delay time Rev. A3, 19-Feb-98 15 (19) I/O Á Á IN OUT I/O 25k To tester BM KT DP VDD2 MODE HKS IN Clock 8.2k 1m 25k 10k a I/O S5 220n VDD1 MIC1 MIC2 MFO MICO TIN 13V 4.7k 47n To tester IN IN I/O S1 47n Rev. A3, 19-Feb-98 1n 150k 620 RECIN 3.58 MHz IN 2.2n ST XT IN VL 1.5k VL S11 IN IL S6 b XT 1 IN 600 S8 IN IN VGEN 100 m 300 mV / 1 kHz VI C1 C2 C3 R1 R2 R3 R4 MUTE PRIVACY RCK GND2 GND1 RECO1 U3760MB VRECO 2.2 m 100 m RECO2 330 AGC 12k RDC VBG VRING 39 VRING VRIAC OUT THA VRIAC 68n U3760MB 220 m S9 S7 VGEN 100 mV 100n VDD b To tester VMIC Basic Test Circuit 12460 16 (19) a To tester 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 ǒ Ǔ VL VMIC VMIC = 3 mV/1 kHz, S5 = open Receiving gain GR + 20 ǒ Ǔ 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 ǒ Ǔ 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 + ǒ VL (s6 + closed) –1 + open) VL(S6 Ǔ TX-mode: VMIC = 3 mV/1 kHz, S5 = open Rev. A3, 19-Feb-98 17 (19) U3760MB Package Information Package SDIP40 Dimensions in mm 15.34 15.14 37.4 36.9 4.9 4.3 13.9 13.7 0.7 3.3 0.38 0.20 0.53 0.48 33.782 17.2 16.0 1.778 technical drawings according to DIN specifications 13027 1 Package SSO44 Dimensions in mm 9.15 8.65 18.05 17.80 7.50 7.30 2.35 0.3 0.25 0.10 0.8 0.25 10.50 10.20 16.8 44 23 technical drawings according to DIN specifications 13040 1 18 (19) 22 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)