U3760MB TEMIC Semiconductors, U3760MB Datasheet
U3760MB
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U3760MB Summary of contents
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... 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. Features Speech Circuit D Adjustable dc characteristic D Symmetrical input of microphone amplifier ...
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... U3760MB Block Diagram / Applications 470 2 (19) Figure 1. Rev. A3, 19-Feb-98 ...
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... U3760MB OUT 30 GND RCK MIC VRING MIC VRIAC MICO 15 26 AGC THA 17 RDC 24 ST TIN 18 23 PRIVACY RECO 1 MUTE 20 21 RECO 2 21 VBG RECIN 22 U3760MB n. MODE HKS 35 n.c. VDD 2 34 VDD 1 33 OUT 32 31 RCK 30 VRING 29 VRIAC 28 AGC 27 THA PRIVACY 24 RECO 1 ...
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... U3760MB Pin Description PD means protection device SDIP40 SSO44 Symbol Keyboard input n.c. Not connected Key tone signal output generated for all keys in pulse dialing mode (except Flash + Redial) with a fre- quency of about 1240 Hz and dura- tion about built-in inverter provides oscillation with an inexpensive 3 ...
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... Rev. A3, 19-Feb-98 Function MIC1 MIC2 MIC2 MICO VL RDC W AGC for low-voltage operation. W may be used to RDC TIN , which dominates the B W for 600- U3760MB Configuration Ê 50K PD 50K 1V Ê VI Ê PD Ê VI Ê 1V Ê 16K PD 16V ...
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... U3760MB SDIP40 SSO44 Symbol 18 20 MUTE Pin for testing 19 21 VBG Pin for test mode 20 22 RECIN Receive amplifier input. The receiving amplification is regulated by an AGC RECO1 Output of the receive amplifier. Dynamic transducers with a minimum impedance of 100 be directly driven by these outputs. ...
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... Flash key will cause active in either DTMF mode or pulse mode. Rev. A3, 19-Feb-98 Function Configuration VRING PD OUT PD RCK PD VRING PD OUT PD VDD1 PD VDD2 HKS B/M places the DD MODE DP U3760MB 200 30V 6.5K 50V Ê Ê 3.4V Ê Ê 0.8V Ê 200 30V 6.5K 50V Ê VL Ê ...
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... U3760MB SDIP40 SSO44 Symbol Keyboard input Keyboard Operation /T: and pulse-to-tone key D R/P: Redial and pause function key D F1, F2, F3: Flash keys Normal Dialing OFF HOOK , D1, D2, ..., Dn will be dialed out. 2. Dialing length is unlimited, but redial is inhibited if length oversteps 32 digits. Redialing OFF HOOK ...
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... OSC Rev. A3, 19-Feb- KID PDP t IDP t IDP PDP t M LOW Oscillation Normal dialing Figure 2. Pulse mode t t KRD KRD t t ITP ITP LOW HIGH Oscillation Figure 3. DTMF mode normal dialing U3760MB 10626 Oscillation Auto dialing 10627 t KID t ITP Oscillation 9 (19) ...
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... U3760MB HKS KEY IN MFO MUTE KT DP OSC Access Pause OFF HOOK , The pause function can be stored in memory. 2. The pause function is executed in normal dialing and redialing. HKS 4 2 KEY IN t KID DP t PDP MUTE KT MFO OSC 10 (19) R/P t KID ITP LOW HIGH Oscillation Figure 4 ...
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... 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 4 2 KEY IN t KID DP t PDP MUTE KT MFO OSC Rev. A3, 19-Feb- ..., D1’ (Tone) */ IDP IDP Oscillation Figure 6. Pulse-to-tone operation U3760MB , D2’ , ..., Dn’ 10630 11 (19) ...
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... U3760MB Flash ( F3) OFF HOOK , 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. OFF HOOK , LNB = D1, D2, D3, ..., Dn ...
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... STA 1 –8 L – HLG LLG, PRE – 4 nF, V 0.8 ear RECO V 2 U3760MB Value Unit 140 125 C – – 150 C 0.9 W 1 unless otherwise specified amb Typ. Max. Unit 1.5 V 4.0 V 4 120 k 47.8 48.8 dB –6 – – 72 ...
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... U3760MB DC Characteristics Dialer 3.58 MHz, all outputs unloaded, S9b DD2 OSC Parameters Test Conditions / Pins Memory retention current HKS = 1, V Preemphases Column/Row DTMF distortion output sink current Keyboard input drive current Keyboard input sink current Keyboard resistance Key tone output current ...
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... See figure 8 Volt VRING 0 VRIAC 0 OUT Melody 0 Rev. A3, 19-Feb-98 Symbol Min. I 2.1 RING V Ron V Roff f 937 RON 1H f 752 off t off Figure 8. Turn off delay time U3760MB Typ. Max. Unit 3.8 mA 23.5 V 5.6 V 1010 1083 Hz 808 868 Hz 12.5 14 12459 (19) ...
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... To tester VDD m 220 25k VDD2 VDD1 MIC1 DP MODE I/O HKS IN Clock S11 XT 3.58 MHz U3760MB I/O MUTE S1 PRIVACY 47n RCK 1n GND2 GND1 150k To tester VMIC VGEN 100 mV 100n 8. 25k 10k S5 220n S8 S6 MIC2 MFO MICO TIN VL 4.7k ST 47n RECIN VI RECO1 VRECO ...
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... RX-mode: VGEN = 300 mV/1 kHz, S7b Gain change when muted + + log VRECO GRM 20 (Mute VL VGEN = 100 mV/1 kHz open open Input impedance of microphone amplifier + (s6 closed) – (S6 open) TX-mode: VMIC = 3 mV/1 kHz open Rev. A3, 19-Feb- mA mA) + log VRECO inactive)–20 (Mute VL U3760MB active) 17 (19) ...
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... U3760MB Package Information Package SDIP40 Dimensions in mm 37.4 36.9 33.782 1 Package SSO44 Dimensions in mm 18.05 17.80 0.3 0.8 16 (19) 4.9 4.3 0.7 3.3 0.38 0.20 0.53 0.48 1.778 technical drawings according to DIN specifications 2.35 0.25 0.10 23 technical drawings according to DIN specifications 22 15 ...
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... 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 TEMIC Semiconductor GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany Telephone 7131 67 2831, Fax number 7131 67 2423 Rev. A3, 19-Feb-98 unauthorized use. U3760MB 19 (19) ...