LC73881M SANYO | Alldatasheet

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CMOS LS! LC73881M Fr HR . SANYO | DTMF Receiver LSI Applications Package Dimensions +» Remote controllers for telephone answering machines unit: mm and other telephone products 3086A-MFP10S Features [Lo7s8e1M] * Detects 16 DTMF signals. * Includes on-chip all filters required in a DTMF receiver oh HAH As — Dial-tone filter ~ | — High-frequency group bandpass filter H * £4 — Low-frequency group bandpass filter | + “we * Serial data output __} + Supports microprocessor-controlled guard times. “A SS * Wide operating power-supply voltage range: 2.7 to 5.5 V 541 — * Supports a low power mode that allows current dissipation to be reduced. - exlha Tr . 2.55, 4. Bi Specifications a SANYO: MFP10S Absolute Maximum Ratings at Ta = 25°C a [Maximum upstage ———*( Vom] ——SSCSCSCSC~S~S~SCSCSCSCS nw VY [inutveiage dw [Sd voy ve | | finput cuenta [Ourpurvorage TT Mor P08 Vp +03 TV | [Allowable power dissipaton | Pdmax | Tas7oc 120m [pong pure | Toe | ida fo] [Surage temperature <i tp [SS 0 as fo] Allowable Operating Ranges at Ta =~35 to +70°C, Vsg = 0 V a [poring spy votes | Voo [SSCS Cd [a7 i Vg | ~ees ST [Ping 0800 serene a CTH [Soorira wunpy eure | pot SS tf 8 [Standby suplycwrert | (6 [POPReSVSSSSSCSC~d SSCS | | [upurhignieveicurent | low [Pins 6.8 and Vogr=28V Sid dT | | [uperiowievelcuren | i. | Pre, 8and0,Voyr=0av——S—S~d oj | iY i ma [inputimpedance [Zin [Ping te [Putaoun wexsorcurent | ly |PO-BV___—— SSS 8] SANYO Electric Co., Ltd. Semiconductor Business Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, } Chome, Ucno, Taito-ku, TOKYO, 110 JAPAN 7259SHA (OT) No. 5000-1/5

[Parameter] symboi_[Condiiong min ve max Tun input eignal valid level [= [er 298.6,9 0 as To [am] [Postive wistaccept | [ve .eaty so Frequency detection accept | [285.9 fate Frequency ejection accept [ [e280 ass [Oe [Thidionewerance | *2.9.4,5.9, 10 ee cs ee [Dialtone tolerance +d +d 2,8, 4, 5,8, 8, 10 es cd ee [Noise wierance | *2.8.4,5,7,9, 10 a ee Tone presentdetection ime | top | See te ting chat. a) ee es [Tone absent detection ime "| tpa__| See the timing chat. Ss eo [Tone duraton accept | tae [See the timing chat. a) re ee [Tone durationrelect_ | tac | See te timing chat. re ee es Inte-digt pause invalidime [too | See he timing chan. re ee ee Inier-digit pause vaidsme | __tip _ | See the timing chan. [|| of ms | Data shit speed a a Data output delay time [| teap__ | See the ACK/SD timing chart es es Setup tne delay See the ACK/SD timing chart a) ee Data hold ime See the ACKISD timing chart a) ee ee Osailator Frequency [ oso [oa t52062 | 4.190908 [a 236207 |r| The OSC! and OSCO pins a ee ee | Note: 1. The dBm values are defined such that 0 dBm is the 1 mW power level for a 600 2 load. 2. All 16 DTMF signals frequency 3. With a 40 ms OTMF signal period and a 40 ms pause period 4, Nominal DTMF signa! frequencies 5. Low-group and high-group signal levels are the same. 6. DTMF signal frequency deviations within +1.5% + 2 Hz 7. Gaussian noise with a 0 to 3 kHz bandwidth 8. 350 and 440 Hz dia! tore frequencies 9. Error rate of less than 1 error in 10,000 events 10.Referenced to the lowest component of the DTMF signal. High-frequency group tone level 11. Twist = Low-frequency group tone level Pin Assignment ruput [4 | [10] voo ro [2 [e}est osco [3 | LC73881M [e] sto ascr ACK ves [3] [a] <0 Top View aoases No. 5000-2/5

INPUT | t__| The input must be capacitor coupled. This signal Is biased to Vpo/2 intemally. [2 [PD | 1 | The L73861M goes to low power mode when his pin is set high. [8 [0860 [0 J connect a 4.194908 MHz crystal oscilator or caramic resonator to these pins to from an oscllator circuit. [| 4 [| osr || When using a ceramic resonator, a capacitor of approximately 30 pF must be connected to each pin. [os [veg] Por eu Normal, [6 | 80 ____| © | The decoded DTMF signat is output, this pinin a 4-bit LSB first format. ‘The ACK pin is used to shift out data trom the SD pin, Four pulses are required to shift out the DMF 7 character, which consists of four bits. The rising edge of the first pulse latches the data (before shifting) into the ehitt register. ‘A high level indicates the presence of a DTMF signal. Although the rise of this signal is later than thatof the EST pin, itis less sensitive to burst waveforms and other noise, ‘A high level indicates the presence of a DTMF signal. Applications should monitor this pin and, after waiting EST an appropriate period, apply four pulses to the ACK pin to access the data. [oo Pome sin Namal 2710 SV. Block Diagram Yoo Vss Trew PB Saat }—O est ereut 3 fl Great | —Q) sto 3 32 z F3 se |_| 3] | 88 mo a group bandpats > ‘detector 3 cH Shitt } so . Timing wr Sreuit {| register os generator O—O oscr osco o3s07 Test Circult/Sample Application Circult 0.1 uF +3V O—HA { 4 | rNeuT Voo oO. { 2] Po est |} O [3 | osco sto | 8} O 4,494304MHz CI {4 | oscr ACK O [s| vss so [6] O Aoatee a No, 5000-3/5

Tone #n Bnet tinea tpp toa ke kb est to sD \\eeX eee) \\eeesXee yee) uss use usa use LSB Firet aoases ACK/SD Timing Chart ee Est vin eS A a VIL fou ack \\ \\f \\-f VIL SE a meee OO tpap ton Vin TDF ETF ep F>7F op 7 TL wor nnnr renee ern enn ee Aoa60a Filter Characteristics [_[] PRECISE DIAL TONE: LIA EAA TONES |_| ] \\ X=350H _ =350Hz 3. \\ IN Y=440Hz = | zat it TT Dm os 2 20 I E i A=697Hz = B=770Hz 30) = = C=852Hz ~40 yan E=1209Hz LAT I ACT N ect G=1477Hz ~60) A L A H=1633H2 xy ABCD EFG H FREQUENCY [Hz] a0a760 No, 5000-4/5

[eo fv a [ev [ we [oz fe te tTuoeye | [eer fa? Ts a DD [vo |e se a j 7 [we Pe a Tk [ese [sano a a {ese [soe Te ee a OD {eT se Pe a a { sn [oo Pe Pe a TT a [eon Ph Pe Te CC RS SO OO [__esz_ [es fc OT KH Th Tk Te A A . DTMF Dialing Matrix C1 C2 C3 C4 ») & »L) &) Gl ms Ey mE} [2] P| No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss. @ Anyone purchasing any products described or contained herein for an above-mentioned use shall: © Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and | distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use: @ Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO,, LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally. 1 Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied | regarding its use or any infringements of intellectual property rights or other rights of third parties. |! This catalog provides information as of July, 1995. Specifications and information herein are subject to change without notice. No, 5000-5/5