U3760MB TEMIC | Alldatasheet
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Technical content
Features
/C0068Adjustable dc characteristic /C0068Symmetrical input of microphone amplifier /C0068Receiving amplifier for dynamic or piezo-electric earpieces /C0068Automatic line-loss compensation /C0068Selectable flashing duration by key pad /C0068Pause function /C0068Last number redial up to 32 digits /C0068Standard low-cost 3.58-MHz crystal or ceramic resonator Dialer /C0068DTMF / pulse switchable /C0068Pulse dialing 66/33 or 60/40 for 10 ppS and 20 ppS or DTMF dialing selectable by pins /C0068Key tone Tone Ringer /C0068Two-tone ringer /C0068Adjustable volume /C0068RC oscillator /C0068Adjustable threshold Benefits /C0068Low number of external components /C0068High quality through one-IC solution /C0068One IC for all standards
Ordering Information
Extended Type Number Package Remarks U3760MB-MSD SDIP40 U3760MB-MFN SSO44 U3760MB-MFNG3 SSO44 Taped and reeled
2 (19) Rev. A3, 19-Feb-98 Block Diagram / Applications ÁÁ Sidetone amplifier Receiverattenuation Controlfunction Controlfunction RECIN ST MIC2MIC1 Mute control Supply currentregulator AGC currentgenerator Microphoneamplifier Pulsecontrol logic VDD1 Locationlatch Read – writecounter C o n t r o l l o g i c K e y b o a r d i n t e r f a c e AGC RDC MODE Comparatorwith hysteresis Clock signal oscillator Divider Tone signalgenerator Divider Supply Power-on-reset Bandgapreference HKS VI 390 VRIAC Ring Tip 100 OUT THA XT RCK GND1 RAM 8176 MICO TINDP HKS HKS Clock generator D/A converter Datalatch & decoder ROW & column programmablecounter Transmit amplifier Receivingamplifier RECO1 VL XT MFO 213 F1 456 F2
789 F 3
*/T 0 # R/P VRING BM KT RECO2 PRIV ACY EP VDD2 GND2 220 k 1 M 470 k BC546 100 n
3.58 MHz 47 n
2.4 k 3 n 3 47 n 2.2 100 1.8 k 12 k 28 V 10 k 10 k 47 n 1 n 150 k /C0109 /C0109 /C0109 /C0109 ÁÁ ÁÁ 1 W 100 n VBG MUTE /C0109 EP 75V 1 W 2 n 2 CL 2N5401
5 V 1
Figure 1.
Rev. A3, 19-Feb-98 3 (19) SDIP40 SSO44 DP MODE BM HKS VBG VDD 1 OUT RCK VRING VRIAC AGC THA ST PRIV ACY RECO 1 RECO 2 KT XT GND 1 MFO XT MIC 1 MICO VL RDC TIN VI MUTE n.c. RECIN U3760MB GND 2 MIC 2 VDD 2 10181 n.c. MODE BM HKS n.c. VDD 1 OUT RCK VRING VRIAC AGC THA ST PRIV ACY RECO 1 RECO 2 n.c. n.c. n.c. KT XT MFO GND 1 MICO VL RDC TIN VI MUTE VBG RECIN U3760MB XT GND 2 MIC 1 VDD 2 10180 MIC 2 DP
4 (19) Rev. A3, 19-Feb-98 Pin Description PD means protection device SDIP40 SSO44 Symbol Function Configuration 1 1 C1 Keyboard input PD 2 2 C2 PD PD 3 3 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 fre- quency of about 1240 Hz and dura- tion about 50 ms KT 5 8 XT A built-in inverter provides oscillation with an inexpensive 3.579545-MHz crystal or ceramic resonator XT PD 6 9 XT resonator XT PD 40P 40P 7 10 MFO Output of DTMF DTMF output frequency Specified Actual Error (HZ) (Hz) (%) R1 697 699 +0.28 R2 770 766 –0.52 R3 852 848 –0.47 R4 941 948 +0.74 C1 1209 1216 +0.57 C2 1336 1332 –0.30 C3 1477 1472 –0.34 MFO 9 12 GND 1 Ground 1 connected with ground 2 8 11 GND 2
Rev. A3, 19-Feb-98 5 (19) ConfigurationFunctionSymbolSSO44SDIP40 10 13 MIC 1 Inverting input of microphone amplifier MIC1 VI MIC2 Ê PD50K 11 14 MIC 2 Non-inverting input of microphone amplifier VI MIC2 Ê PD 50K Ê 12 15 MICO Transmit pre-amp output which is normally capacitively coupled to Pin TIN VI MICO Ê ÊÊ PD 16K 13 16 VL Positive supply voltage input to the device. The current through this pin is modulated by the transmit signal. VL RDC PD PD 16V 14 17 RDC 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 /C0087 for low-voltage operation. Values up to 100 /C0087 may be used to increase the available transmit output voltage swing at the expense of low-voltage operation. RDC AGC VL Ê PD PD 16 18 TIN Input to the line output driver am- plifier. Transmit AGC is applied to this stage. TIN ÊÊ ÊÊ PD 5.6K 16V 17 19 V I This internal voltage bias line must be connected to VL via an external resistor, R B , which dominates the ac input impedance of the circuit and should be 680 Ω for 600-/C0087 input impedance or 1.2 kΩ for a 900-Ω input impedance. VI Ê PD 16V
6 (19) Rev. A3, 19-Feb-98 ConfigurationFunctionSymbolSSO44SDIP40 18 20 MUTE Pin for testing VBG MUTE Ê PD MUTE 6.7V 30K 19 21 VBG Pin for test mode VBG VL Ê Ê PD 6.7V 20 22 RECIN Receive amplifier input. The receiving amplification is regulated by an AGC. RECIN Ê 60K 22 24 RECO1 Output of the receive amplifier. Dynamic transducers with a minimum impedance of 100 /C0087 can RECO2 1V VL Ê Ê Ê 60K Ê 21 23 RECO2 be directly driven by these outputs.RECO1 PD 6.7V 23 25 PRIV ACY Input for handset mute PRIV ACY 0.6V VI Ê Ê Ê PD 6V 40K 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. ST Ê PD 16V 25 27 THA Ringer threshold adjustment THA VRIAC Ê Ê PD 12K 20K 140K Ê 26 28 AGC The range of transmit and receive gain variations between short and long loops may be adjusted by connecting a resistor R AGC from this pin to (GND). This pin can be left open to set AGC out of action. RDC AGC VL Ê PD PD 27 29 VRIAC Ringing supply VRIAC Ê ÊÊ PD 50V 70K 10K
Rev. A3, 19-Feb-98 7 (19) ConfigurationFunctionSymbolSSO44SDIP40 28 30 VRING DC supply voltage for the tone ringer is limited to 30 V with integrated Z-diode. OUT VRING PD PD 30V 50V 2006.5K 29 31 RCK RC clock oscillator for ringer 3.4V 0.8V RCK ÊÊ ÊÊ Ê PD 30 32 OUT Buzzer output OUT VRING PD PD 30V 50V 200 6.5K 31 33 VDD 1 Supply output of dialer section VL VDD1 Ê PD Ê 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 en- able for normal operation. HKS PD 34 37 BM 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 B/M PD 35 38 MODE 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) MODE 36 39 DP N-channel open drain pulse dialing output. Flash key will cause DP to be active in either DTMF mode or pulse mode. DP DP
8 (19) Rev. A3, 19-Feb-98 ConfigurationFunctionSymbolSSO44SDIP40 37 41 R1 Keyboard input PD 38 42 R2 PD PD 39 43 R3 PD PD 40 44 R4 PD Keyboard Operation ÁÁ ÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁ ÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁ ÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁ ÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁ ÁÁ ÁÁÁÁ ÁÁÁÁ /C0058/T ÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ R/P ÁÁÁÁÁ ÁÁÁÁÁ ÁÁ ÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ /C0068/C0058/T: /C0058 and pulse-to-tone key /C0068R/P: Redial and pause function key /C0068F1, F2, F3: Flash keys Normal Dialing ÁÁ ÁÁÁÁÁÁ ÁÁÁ ÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁ OFF HOOK ÁÁÁ ÁÁÁ ÁÁ ÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁ , ..., ÁÁÁ ÁÁÁ Dn Á Á ÁÁ ÁÁÁÁÁÁ ÁÁÁ ÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁ Á 2. Dialing length is unlimited, but redial is inhibited if length oversteps 32 digits. Redialing ÁÁ ÁÁÁÁÁ ÁÁ ÁÁÁ ÁÁ ÁÁ ÁÁÁ ÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁ ÁÁÁÁÁÁ ÁÁ ÁÁÁ ÁÁÁ ÁÁ ÁÁÁÁÁ ÁÁÁÁÁ OFF HOOK ÁÁ ÁÁ ÁÁÁ ÁÁÁ ÁÁ ÁÁ ÁÁ ÁÁ ÁÁÁ ÁÁÁ , ..., ÁÁÁ ÁÁÁ Dn ÁÁÁÁÁÁ ÁÁÁÁÁÁ BUSY , Come ÁÁÁÁÁ ÁÁÁÁÁ ON HOOK ÁÁ ÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁ OFF HOOK ÁÁ ÁÁ ÁÁÁ ÁÁÁ R/P Á Á ÁÁ ÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁ ÁÁ ÁÁÁ ÁÁÁ ÁÁ ÁÁ ÁÁ ÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁ ÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁ ÁÁ ÁÁÁ ÁÁÁ Á Á The R/P key can execute the redial function only as the first key-in after off-hook; otherwise, it executes the pause function.
Figure 4. DTMF auto dialing
- The pause function can be stored in memory.
- The pause function is executed in normal dialing and redialing.
42 R/P
Figure 5. Pause function
- If the mode switch is set to pulse mode, then the output signal will be:
- If the mode switch is set to tone mode, then the output signal will be:
- The dialer remains in tone mode when the digits have been dialed out and can be reset to pulse mode
Figure 6. Pulse-to-tone operation
- The flash key cannot be stored as a digit in memory. The flash key has first priority among the keyboard
- The system will return to the initial state after the flash pause time has elapsed.
Figure 7. Flash operation
Rev. A3, 19-Feb-98 13 (19) Absolute Maximum Ratings Parameters Symbol Value Unit Line current IL 140 mA DC line voltage V L 14 V 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 SSO44 SDIP40 Ptot 0.9 1.3 W Junction ambient SSO44 SDIP40 R thJA 70 k/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 Test Conditions / Pin Symbol Min. Typ. Max. Unit Line voltage IL = 5 mA IL = 20 mA IL = 30 mA IL = 73 mA V L 1.2 4.0 4.5 6.4 1.5 V V V V Transmit and sidetone Input resistance R i R i 45 80 120 kΩ Gain IL = 20 mA, S5 = open G s 46.8 47.8 48.8 dB Line-loss compensation R AGC = 12 k/C0087, IL = 73 mA /C0068G s –4.8 –6 –7 dB Noise at line weighted psophometrically IL > 20 mA, GS = 48dB no – 72 dBmp Sidetone reduction IL/C0121 20 mA G STA 10 15 20 dB DTMF amplifier V olume range d < 5% Single tone, IL /C0119 20 mA V L 1.3 dBm DTMF output level low frequency group IL = 20 mA, S5 = closed V L –8 –4 dBm Preemphasis between high- and low-level frequency group PPRE = PHLG – PLLG, S5 = closed PPRE 1 3 dB Receiving amplifier Gain IL /C0119 20 mA G R 3 5 dB Line-loss compensation IL = 73 mA /C0068G R –4.7 –6 –7 dB Receiving noise at ear- phone weighted psophome- trially IL = 73 mA ni –77.5 –71 dBm Gain change when muted IL /C0121 20 mA G RM 24 29 34 dB Output voltage push-pull IL /C0121 20 mA, Zear = 68 nF, 100 /C0087 in series V RECO 0.8 0.9 V RMS Supply voltage (for internal use only) Output voltage IL /C0121 20 mA dialing mode V DD 1 2.3 6.3 V
14 (19) Rev. A3, 19-Feb-98 DC Characteristics Dialer V DD2 = 2.7 V , fOSC = 3.58 MHz, all outputs unloaded, S9b Parameters Test Conditions / Pins Symbol Min. Typ. Max. Unit Memory retention current HKS = 1, VDD2 = 1.0 V IMR 0.2 /C0109A Preemphases Column/Row 1 2 3 dB DTMF distortion R L = 5 k/C0087 d –30 –23 dB DP output sink current V PO = 0.5 V IPL 0.5 mA Keyboard input drive current V I = 0 V IKD 30 /C0109A Keyboard input sink currentV I = 2.7 V IKS 200 400 /C0109A Keyboard resistance 5 k/C0087 Key tone output current /C00341 mA Key tone frequency t = 50 ms 1240 Hz AC Characteristics Dialer Parameters Test Conditions / Pins Symbol Min. Typ. Max. Unit Keypad active in debounce tKID 20 ms Key release debounce tKRD 20 ms Pre-digit pause B/M pin = floating 10 ppS B/M pin = low tPDP tPDP 33.3 ms ms Inter-digit pause (auto dialing) 10 ppS 20 ppS tIDP tIDP 800 500 ms ms Make/break ratio B/M pin = floating B/M pin = low M/B 40:60 33:67 DTMF output duration Auto dialing tTD 87 ms Inter-tone pause Auto dialing tITP 87 ms Flash break time R 1 grounded R 2 grounded R 3 grounded tFB 94 250 600 ms ms ms Flash pause time F1 tFP 3.6 s s s Pause time tP 3.6 s
Figure 8. Turn off delay time
16 (19) Rev. A3, 19-Feb-98 Basic Test Circuit
3.58 MHz
a S11 150k 47n 620 13V 100 IL 25k25k 100 47n 2.2 VDD 220 220n S8S5 100 mV VGEN 4.7k 2.2n 1.5k 600 12k 330 VGEN 300 mV / 1 kHz 68n Clock To testerVMIC VRING VRIAC MUTE VRIAC MODE HKS VRING VL VI VBG THA ST RECO2 RECO1 RECIN RDC GND2 GND1 AGC PRIV ACY RCK VDD1 MFOMIC1 MIC2 MICO TIN OUT DPKTBM VDD2 XT XT To tester I/O OUT IN IN I/O To tester IN U3760MB b a b VRECO VL IN I/O IN IN IN IN IN To tester IN I/O 12460 /C0109 /C0109 /C0109/C0109 /C0109 10k Á 100n 8.2k Á
Rev. A3, 19-Feb-98 17 (19) 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 /C004320 /C0032log /C0466VL VMIC /C0467 VMIC = 3 mV/1 kHz, S5 = open Receiving gain GR /C004320 /C0032log /C0466VRECO VL /C0467 RX-mode: VGEN = 300 mV/1 kHz, S7b Line-loss compensation transmit /C0068GS /C0043GS(at IL/C004373 mA)–GS(at IL /C004320 mA) TX-mode: VMIC = 3 mV/1 kHz, S5 = open Sidetone reduction GSTA /C004320 /C0032log/C0466VL VRECO /C0467(in TX–mode) /C0041GR TX-mode: VMIC = 3 mV/1 kHz, S5 = open Line-loss compensation receive /C0068GR /C0043GR(at IL /C004373 mA)–GR(at IL /C004320 mA) RX-mode: VGEN = 300 mV/1 kHz, S7b Gain change when muted GRM /C004320 /C0032log VRECO VL (Mute /C0043inactive)–20/C0032log VRECO VL (Mute /C0043active) VGEN = 100 mV/1 kHz, S5 = open, S8 = open Input impedance of microphone amplifier Ri /C004350 k /C0466 VL (s6/C0043closed) VL (S6 /C0043open) –1/C0467 TX-mode: VMIC = 3 mV/1 kHz, S5 = open
18 (19) Rev. A3, 19-Feb-98
Package Information
0.53 0.48 4.9 4.3 0.38 0.20 15.34 15.14 1.778 3.3 0.7 13.9 13.7 17.2 16.0 Dimensions in mm 37.4 33.782 technical drawings according to DIN specifications 36.9 13027 13040 technical drawings according to DIN specifications Dimensions in mm 0.25 0.10 0.3 0.8 18.05 17.80 16.8 2.35 9.15 8.65 7.50 7.30 10.50 10.20 0.25 44 23 1 22
Rev. A3, 19-Feb-98 19 (19) 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