www.lansdale.com page 1 of 9 issue a ML12061 crystal oscillator legacy device: motorola mc12061 the ML12061 is for use with an external crystal to form a crys- tal controlled oscillator. in addition to the fundamental series mode crystal, two bypass capacitors are required (plus usual power sup- ply pin bypass capacitors). translators are provided internally for mecl and ttl outputs. ? frequency range = 2.0 to 20 mhz ? operating temperature range = 0 to + 70? ? single supply operation: +5.0 vdc or ?.2 v dc ? three outputs available: 1.complementary sine wave (600 mvpp typ) 2.complementary mecl 3.single ended ttl p dip 16 = ep plastic package case 648 16 1 cross reference/ordering information motorola p dip 16 mc112061p ML12061ep lansdale package note : lansdale lead free ( pb ) product, as it becomes available, will be identified by a part number prefix change from ml to mle . figure 1. block diagram note: 0.1 f power supply pin bypass capacitors not shown. voltage reg. bias bypass 0.1 f agc filter 0.1 f v cc sine wave output mecl output 71 v cc 432141516v cc 13 12 11 v cc crystal osc. agc ampl./ agc sine to mecl mecl to ttl trans- lator 10 ttl output ? ? 5 6 crystal 8v ee v ee 9 free datasheet http:///
lansdale semiconductor, inc. ML12061 electrical characteristics test limits pin under 0 c +25 c +75 c characteristic symbol under test min max min typ max min max unit power supply drain current i cc 1 13 16 19 madc 1 11 16 18 13 23 3.0 16 28 4.0 19 input current i inh 14 15 250 250 adc i inl 14 15 1.0 1.0 adc differential offset voltage ? v 4 to 7 2 to 3 40 ?00 0 325 +200 madc output voltage level v out 2 3 3.5 3.5 vdc logic ??output voltage v oh1 (note 1) 12 13 4.0 4.0 4.16 4.16 4.04 4.04 4.19 4.19 4.1 4.1 4.28 4.28 vdc v oh2 10 2.4 2.4 2.4 logic ??output voltage v ol1 (note 1) 12 13 2.98 2.98 3.43 3.43 3.0 3.0 3.44 3.44 3.02 3.02 3.47 3.47 vdc v ol2 10 10 0.5 0.5 0.5 0.5 0.5 0.5 logic ??threshold voltage v oha 12 13 3.98 3.98 4.02 4.02 4.08 4.08 vdc logic ??threshold voltage v ola 12 13 3.45 3.45 3.46 3.46 3.49 3.49 vdc output short circuit current i os 10 20 60 20 60 20 60 madc note: 1. devices will meet standard mecl logic levels using v ee = ?.2 vdc and v cc = 0. www.lansdale.com page 2 of 9 issue a free datasheet http:///
www.lansdale.com page 3 of 9 issue a lansdale semiconductor, inc. ML12061 electrical characteristics (continued) test voltage/current values volts @ test temperature v ihmax v ilmin v ihamin v ilamax v iht v ccl 0 c 4.16 3.19 3.86 3.51 4.0 4.75 +25 c 4.19 3.21 3.90 3.52 4.0 4.75 +75 c 4.28 3.23 3.96 3.55 4.0 4.75 pin under test voltage applied to pins listed below characteristic symbol u n d er test v ihmax v ilmin v ihamin v ilamax v iht v ccl gnd power supply drain current i cc 1 8 1 11 16 14 15 8 8,9 8 input current i inh 14 15 14 15 15 14 8 8 i inl 14 15 15 14 8,14 8,15 differential offset voltage ? v 4 to 7 2 to 3 5,6 4 8 output voltage level v out 2 3 4 4 8 8 logic ??output voltage v oh1 (note 1) 12 13 14 15 15 14 8 8 v oh2 10 15 14 11,16 8,9 logic ??output voltage v ol1 (note 1) 12 13 15 14 14 15 8 8 v ol2 10 10 14 14 15 15 11,16 8,9 8,9 logic ??threshold voltage v oha 12 13 14 15 15 14 8 8 logic ??threshold voltage v ola 12 13 15 14 14 15 8 8 output short circuit current i os 10 15 14 11,16 8,9,10 note: 1. devices will meet standard mecl logic levels using v ee = ?.2 vdc and v cc = 0. free datasheet http:///
www.lansdale.com page 4 of 9 issue a lansdale semiconductor, inc. ML12061 electrical characteristics (continued) test voltage/current values volts ma @ test temperature v cc v cch i ol i oh i il 0 c 5.0 5.25 16 ?.4 ?.5 +25 c 5.0 5.25 16 ?.4 ?.5 +75 c 5.0 5.25 16 ?.4 ?.5 pin under test voltage applied to pins listed below characteristic symbol u n d er test v cc v cch i ol i oh i il gnd power supply drain current i cc 1 1 8 1 11 16 1 11,16 16 8 8,9 8 input current i inh 14 15 16 16 8 8 i inl 14 15 16 16 8,14 8,15 differential offset voltage ? v 4 to 7 2 to 3 1 8 output voltage level v out 2 3 1 1 8 8 logic ??output voltage v oh1 (note 1) 12 13 16 16 12 13 8 8 v oh2 10 10 8,9 logic ??output voltage v ol1 (note 1) 12 13 16 16 12 13 8 8 v ol2 10 10 11,16 10 10 8,9 8,9 logic ??threshold voltage v oha 12 13 16 16 12 13 8 8 logic ??threshold voltage v ola 12 13 16 16 12 13 8 8 output short circuit current i os 10 8,9,10 note: 1. devices will meet standard mecl logic levels using v ee = ?.2 vdc and v cc = 0. free datasheet http:///
www.lansdale.com page 5 of 9 issue a lansdale semiconductor, inc. ML12061 all input and output cables to the scope are equal lengths of 50 ? coaxial cable. unused outputs are connected to a 50 ? 1% resistor to ground. 80% 50% 20% 50% ?00 mv +200 mv 50% 80% 50% 20% 80% 20% t t t t + t t+ t+ t++ t+ + t+ t+ input (pin 15) ttl output (pin 10) mecl output (pin 13) mecl output (pin 12) 16 11 13 450 12 450 10 1.2 k 400 +2.0 vdc 89 c t mmd6150 or equiv mmd7000 or equiv ?.0 vdc v ee = 3.0 vdc 0.1 f 0.1 f 15 pulse generator (eh 137 or equiv) prf = 2.0 mhz t + = t = 2.0 0.2 ns 14 v cc = + 2.0 vdc figure 6. ac characteristics ?mecl and ttl outputs t c t = 15 pf = total parasitic capacitance which includes probe, wiring, and load capaci- tance. test limits test voltages / waveforms applied to pins listed below: pin under 0 c +25 c +75 c characteristic symbol under test min max min typ max min max unit pulse in pulse out + 2.0 vdc 3.0 vdc gnd propagation delay t 15 + 10 + t 15?0 t 15 + 12 t 15?2+ t 15 + 13 + t 15?3 10 10 12 12 13 13 22 19 5.2 5.0 4.8 5.0 17 12 4.3 3.7 4.0 4.0 25 18 5.5 5.2 5.0 5.0 27 18 5.8 5.2 5.2 5.1 ns 15 10 10 12 12 13 13 11,16 8,9 14 rise time t 12 + t 13 + 12 13 4.0 4.0 3.0 3.0 4.0 4.0 4.4 4.4 ns ns 15 15 12 13 11,16 11,16 8,9 8,9 14 14 fall time t 12 t 13 12 13 4.0 4.0 3.0 3.0 4.0 4.0 4.0 4.0 ns ns 15 15 12 13 11,16 11,16 8,9 8,9 14 14 pin under +25 c test voltage applied to pins listed below characteristic test min typ unit + 2.0 vdc 3.0 vdc sine wave amplitude 2 3 650 650 750 750 mvp-p 1 8,9 all output cables to the scope are equal lengths of 50 ? coaxial cable. all unused cables must be terminated with a 50 ? 1% resistor to ground. 450 ? resistor and the scope termination impedance constitute a 10:1 attenuator probe. crystal reeves hoffman series mode, series resistance minimum at fundamental f = 10 mhz r e = 5 ? *r s = 15 k ? is inserted only for test purposes. when used with the above specified crystal, it guarantees oscillation with any crystal which has an equivalent series resistance 155 ? r p : will improve start up problems value: 200?00 ? 6589 3 2 450 450 0.1 f 0.1 f v cc = + 2.0 vdc 14 v ee = 3.0 vdc 0.1 f crystal 0.1 f r p *r s figure 7. ac test circuit ?sine wave output free datasheet http:///
www.lansdale.com page 6 of 9 issue a lansdale semiconductor, inc. ML12061 the ML12061 consists of three basic sections: an oscillator with agc and two translators. buffered complementary sine wave outputs are available from the oscillator section. the translators convert these sine wave outputs to levels compatible with mecl and/or ttl. series mode crystals should be used with the oscillator. if it is necessary or desirable to adjust the crystal frequency, a reac- tive element can be inserted in series with the crystal ?an inductor to lower the frequency or a capacitor to raise it. when such an adjustment is necessary, it is recommended that the crystal be specified slightly lower in frequency and a series trimmer capacitor be added to bring the oscillator back on fre- quency. as the oscillator frequency is changed from the natural resonance of the crystal, more and more dependence is placed on the external reactance, and temperature drift of the trim- ming components then affects overall oscillator performance. the ML12061 is designed to operate from a single supply either +5.0 vdc or ?.2 vdc. although each translator has sep- arate v cc and v ee supply pins, the circuit is not designed to operate from both voltage levels at the same time. the sepa- rate v ee pin from the ttl translator helps minimize transient disturbance. if neither translator is being used, all unused pins (9 thru 16) should be connected to v ee (pin 8). with the translators not powered, supply current drain is typically reduced from 42 ma to 23 ma for the ML12061. frequency stability output frequency of different oscillator circuits (of a given device type number) will vary somewhat when used with a given test setup. however, the variation should be within approximately ?.001% from unit to unit. frequency variations with temperature (independent of the crystal, which is held at 25?) are small ?about ?.08ppm/? for ML12061 operating at 8.0 mhz. signal characteristics the sine wave outputs at either pin 2 or pin 3 will typically range from 800 mv p-p (no load) to 500 mv p-p (120 ohm ac load). approximately 500 mv p-p can be provided across 50 ohms by slightly increasing the dc current in the output buffer by the addition of an external resistor (680 ohms) from pin 2 or 3 to ground, as shown in figure 9. frequency drift is typi- cally less than 0.0003% when going from a high-impedance load (1 megohm, 15pf) to the 50 ohm load of figure 9. the dc voltage level at pin 2 or 3 is nominally 3.5 vdc with v cc = +5.0 vdc. harmonic distortion content in the sine wave outputs is crys- tal as well as circuit dependent. the largest harmonic (third) will usually be at least 15 db down from the fundamental. the harmonic content is approximately load independent except that the higher harmonic levels (greater than the fifth) are increased when the mecl translator is being driven. typically, the mecl outputs (pins 12 and 13) will drive up to five gates and the ttl output (pin10) will drive up to ten gates. noise characteristics noise level evaluation of the sine wave outputs operation at or 9.0 mhz, indicates the following characteristics: 1. noise floor (200 khz from oscillator center frequency) is approximately ?22 db when referenced to a 1.0 hz bandwidth. noise floor is not sensitive to load conditions and/or translator operation. 2. close-in noise (100 hz from oscillator center frequency) is approximately ?8 db when referenced to a 1.0 hz bandwidth. +5.0 v 0.1 f 0.1 f 0.1 f 4 71 2 or 3 0.1 f 658 680 50 * see text under signal characteristics. t a , ambient temperature ( ) +10 0 ?0 ?0 ?0 ?5 ?5 0 25 50 75 100 125 ) m p p ( t f i h s y c n e u q e r f , f figure 8. frequency variation due to temperature ML12061 v cc = +5.0 vdc t crystal = 25 c ML12061 figure 9. driving low impedance loads free datasheet http:///
www.lansdale.com page 7 of 9 issue a lansdale semiconductor, inc. ML12061 figure 10. mecl translator load capability to hp8552b/53b spectrum analyzer or equiv sine to mecl 16 v cc = +5.0 v 0.1 f 13 12 8.2 k 15 pf 8 0.1 f v cc = +5.0 v 11 mecl to ttl trans- lator 10 1.5 k 15 pf +5.0 v 270 all diodes mbd101 or equiv 9 +5.0 v 0.1 f 0.1 f 0.1 f 0.1 f 71 4 658 750 2 or 3 figure 11. ttl translator load capability figure 12. noise measurement test circuit measurement sweep bandwidth video filter noise floor close-in noise 50 khz/div 20 khz/div 10 khz 10 hz 10 hz 10 hz analyzer setting free datasheet http:///
www.lansdale.com page 8 of 9 issue a lansdale semiconductor, inc. ML12061 figure 13. circuit schematic c g a / r e i f i l p m a r o t a l l i c s o r o t a l u g e r e g a t l o v s a i b 7 c c v 1 r e t l i f 4 c g a 1 r 1 r 0 6 2 k 1 0 0 1 k 2 . 1 1 4 2 k 8 9 . 2 0 1 4 1 4 2 0 1 4 + 3 2 t u p t u o e v a w e n i s 6 1 3 1 4 1 + 5 1 c c v t u p t u o l c e m 2 1 r o t a l s n a r t l t t o t l c e m r o t a l s n a r t l c e m o t e n i s 1 1 c c v 0 4 5 0 8 6 0 1 t u p t u o l t t 0 5 7 0 0 5 9 e e v 8 e e v 5 6 l a t s y r c 0 2 0 3 1 k 4 . 1 2 8 5 k 5 . 1 k 5 . 1 5 0 2 k 2 3 . 9 2 r 3 r 3 r 0 2 2 r 0 1 4 k 2 3 . 9 r1 (2 places) r2 (2 places) r3 (2 places) 200 ? 400 ? 2 k ? resistor ML12061 free datasheet http:///
www.lansdale.com page 9 of 9 issue a lansdale semiconductor, inc. ML12061 p dip 16 = ep plastic package (ML12061ep) case 648?8 issue r notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: inch. 3. dimension l to center of leads when formed parallel. 4. dimension b does not include mold flash. 5. rounded corners optional. ? b f c s h g d j l m 16 pl seating 18 9 16 k plane ? m a m 0.25 (0.010) t dim min max min max millimeters inches a 0.740 0.770 18.80 19.55 b 0.250 0.270 6.35 6.85 c 0.145 0.175 3.69 4.44 d 0.015 0.021 0.39 0.53 f 0.040 0.70 1.02 1.77 g 0.100 bsc 2.54 bsc h 0.050 bsc 1.27 bsc j 0.008 0.015 0.21 0.38 k 0.110 0.130 2.80 3.30 l 0.295 0.305 7.50 7.74 m 0 10 0 10 s 0.020 0.040 0.51 1.01 outline dimensions lansdale s emiconductor reserves the right to make changes without further notice to any products herein to improve reliabili- ty, function or design. lansdale does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others. typical parameters which may be provided in lansdale data sheets and/or specifications can vary in different applications, and actual performance may vary over time. all operating parameters, including ?ypicals must be validated for each customer application by the customer s technical experts. lansdale s emiconductor is a registered trademark of lansdale s emiconductor, inc. free datasheet http:///
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