u3762mb ETC-unknow, u3762mb Datasheet
u3762mb
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u3762mb Summary of contents
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... Universal Telephone IC Description TEMIC’s low-voltage telephone circuit U3762MB performs all the speech and line interface functions required in an electronic telephone set, the tone ringer, the Features Speech Circuit D Adjustable DC characteristic D Symmetrical input of microphone amplifier D Receiving amplifier for dynamic or piezo-electric earpieces ...
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... U3762MB Block Diagram / Applications 2 (23) Preliminary Information Figure 1. Rev. A1, 15-Sep-98 ...
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... MIC 2 14 MICO RDC 27 TIN MUTE PRIND RECIN 23 22 14835 SSO44 Rev. A1, 15-Sep-98 Preliminary Information Mask DP MODE KT HKS n.c. TEST VDD OUT RCK VRING VRIAC AGC THA ST CLIM RECO 1 RECO 2 U3762MB 3 (23) ...
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... U3762MB Pin Symbol 1 C1 Keyboard input Earth Earth key ( 604 ms high pulse pause HFI Input with 200 k HFI triggers HFO with each LH edge. 7 HFO Output will be toggled by each LH edge at HFI built-in inverter provides oscillation with an inexpensive 3 ...
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... TIN Input to the line output driver amplifier. Transmit AGC applied to this stage. Rev. A1, 15-Sep-98 Preliminary Information Function MFIND MIC1 MIC2 MICO VL RDC AGC RDC TIN U3762MB Configuration VDD Ê MFIND PD VI Ê 1V 50K PD Ê 50K 1V VI Ê PD Ê ...
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... U3762MB Pin Symbol 19 V This internal voltage bias line must be con- I nected to VL via an external resistor which dominates the AC input impedance of the cir- cuit and should be 680 impedance or 1.2 k for a 900- input im- pedance. 20 MUTE Pin for testing 21 PRIND PRIVACY indication pin ...
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... HKS = 1: Off-hook state. Chip enable for normal operation Keytone output only sent out in pulse mode Rev. A1, 15-Sep-98 Preliminary Information Function VRING OUT RCK VRING OUT VDD W pull-up resistor TEST HKS KT U3762MB Configuration 200 30V 6.5K PD 50V PD Ê Ê 3.4V Ê Ê 0.8V Ê 200 30V 6.5K ...
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... U3762MB Pin Symbol 38 MODE Pulling MODE pin to: C3 tone mode with 87 ms burst time and 140 ms pause C4 tone mode with 87 ms DTMF burst and 87 ms pause R1 pulse mode with 20 pps, Make/Break = 40/60 R2 pulse mode with 20 pps, Make/Break = 33/66 R3 pulse mode with 10 pps, Make/Break = 40/60 ...
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... The R/P key can execute the redial function only as the first key-in after off-hook; otherwise, it executes the pause function (3.6 s). Keys stored in redial memory R/P, F Rev. A1, 15-Sep-98 Preliminary Information R Flash key D : hand set, MIC mute D2 , ..., Dn Dn BUSY, Come ON HOOK U3762MB OFF HOOK , R/P 9 (23) ...
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... U3762MB HKS KEY KID DP t IDP MUTE MASK MFO OSC HKS KEY IN R MUTE MASK MFO OSC 10 (23) Preliminary Information IDP t PDP Low Oscillation Figure 2. Pulse mode normal dialing t KRD KID IDP IDP ...
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... MASK DP OSC Rev. A1, 15-Sep-98 Preliminary Information t KRD KID IDP IDP t PDP Low Oscillation Figure 4. Pulse mode auto dialing ITP ITP Low High Oscillation Figure 5. DTMF mode normal dialing U3762MB t > t OHD 15021 t KRD 5 t ITP 15022 11 (23) ...
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... U3762MB HKS KEY IN R/P t KID DTMF t TD MUTE MASK DP OSC Figure 6. DTMF mode auto dialing (t HKS KEY IN R/P t KID DTMF t TD MUTE MASK DP OSC Figure 7. DTMF mode auto dialing (t 12 (23) Preliminary Information t t<t KRD OHD t ITP Low High Oscillation OHD t t > t ...
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... The pause function can be stored in the memory. 2. The pause function is executed in normal dialing and redialing. HKS KEY KID DP t PDP MUTE MASK MFO OSC Rev. A1, 15-Sep-98 Preliminary Information , R ..., Dn’ R Low Oscillation Figure 8. Pause function U3762MB t IDP t PDP 15025 13 (23) ...
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... U3762MB : Pulse-to-Tone ( /T) OFF HOOK , 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 (Pulse), (Tone), (Tone the mode switch is set to tone mode, then the output signal will be: D1, D2, ...
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... MUTE Low MASK EARTH Figure 11. Symbolic timing diagram: Earth function Rev. A1, 15-Sep-98 Preliminary Information High Oscillation Figure 10. Flash operation t = intertone pause ITP t = flash break time flash pause time pause time P U3762MB t ITP 15027 15028 15 (23) ...
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... U3762MB HKS HFI HFO PD Figure 12. Symbolic timing diagram: HFI, HFO function Off hook HKS DP Figure 13. Symbolic timing diagram: on hook debounce time Absolute Maximum Ratings Parameters Line current DC line voltage Junction temperature Ambient temperature Storage temperature Total power dissipation amb Junction ambient ESD withstand voltage 1 kV according to MIL standard 883d method 3015 ...
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... – 4 nF, V 0.8 ear RECO = 1.3 gen rms ear 150 max rms G 60 SPRIV U3762MB Typ. Max. Unit 1.4 V 3.85 4.1 V 6.55 7 120 k 47.8 48.8 dB 0.5 dB 0.5 dB –6 – 1.2 dBm – 72 dBmp dBm –4 dBm 3 ...
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... U3762MB DC Characteristics Dialer 3.58 MHz, all outputs unloaded, S9 closed; HKS = 0 DD OSC Parameters Test Conditions / Pins Memory rentention current HKS = 1, V Pre-emphasis Column/Row DTMF distortion output sink current Keyboard input drive current Keyboard input sink current ...
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... Symbol Min. I 2.1 RING V 8 RON V 5.0 ROFF f 937 RON 1H f 752 out out t off t off Figure 14. Turn-off delay time U3762MB Typ. Max. Unit 60 62 33. 33 16.65 ms 100 105 Typ. Max. Unit 3 ...
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... U3762MB Basic Test Circuit I/O I/O OUT 20 (23) Preliminary Information tester To tester To Figure 15. Basic test circuit tester To 14836 Rev. A1, 15-Sep-98 ...
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... GRM 20 log (Mute inactive)– 100 mV/1 kHz open open gen Input impedance of microphone amplifier + (S6 closed) – (S6 open) TX-mode mV/1 kHz open MIC Rev. A1, 15-Sep-98 Preliminary Information + RECO log (Mute active U3762MB 21 (23) ...
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... U3762MB Packaging Information Package SSO44 Dimensions in mm 18.05 17.80 0.3 0.8 16 (23) Preliminary Information 9.15 8.65 7.50 7.30 2.35 0.25 0.10 10.50 10.20 23 technical drawings according to DIN specifications 22 Rev. A1, 15-Sep-98 0.25 13040 ...
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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 Semiconductors GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany Telephone 7131 67 2594, Fax number 7131 67 2423 Rev. A1, 15-Sep-98 Preliminary Information unauthorized use. U3762MB 23 (23) ...