semiconductor technical data mecl pll components 64/65, 128/129 low power dual modulus prescaler pin connections d suffix plastic package case 751 (so8) 1 8 in (top view) 8 in v cc sw out nc mc gnd 7 6 5 1 2 3 4 device operating temp range package ordering information mc12052ad t a =40 to 85 c so8 mc12052a motorola wireless rf, if and transmitter device data 4.212
the mc12052a is a super low power dual modulus prescaler used in phaselocked loop applications. motorola's advanced bipolar mosaic ? v technology is utilized to achieve low power dissipation of 2.7 mw at a minimum supply voltage of 2.7 v. the mc12052a can be used with cmos synthesizers requiring positive edges to trigger internal counters such as motorola's mc145xxx series in a pll to provide tuning signals up to 1.1 ghz in programmable frequency steps. a divide ratio control (sw) permits selection of a 64/65 or 128/129 divide ratio as desired. the modulus control (mc) selects the proper divide number after sw has been biased to select the desired divide ratio. ? 1.1 ghz toggle frequency ? the mc12052 is pin and functionally compatible with the mc12022 ? low power 1.0 ma typical ? 2.0 ma maximum, 40 to 85 c, v cc = 2.7 to 5.5 vdc ? short setup time (t set ) 16 ns maximum @ 1.1 ghz ? modulus control input level is compatible with standard cmos and ttl ? maximum input voltage should be limited to 6.5 vdc mosaic v is a trademark of motorola functional table sw mc divide ratio h h 64 h l 65 l h 128 l l 129 notes: 1. sw: h = v cc , l = open. a logic l can also be applied by grounding this pin, but this is not recommended due to increased power consumption. 2. mc: h = 2.0 v to v cc , l = gnd to 0.8 v. maximum ratings characteristic symbol range unit power supply voltage, pin 2 v cc 0.5 to 7.0 vdc operating temperature range t a 40 to 85 c storage temperature range t stg 65 to 150 c modulus control input, pin 6 mc 0.5 to 6.5 vdc
mc12052a mc12052a motorola wireless rf, if and transmitter device data 4.213 electrical characteristics (v cc = 2.7 to 5.5 vdc, t a = 40 to 85 c, unless otherwise noted.) characteristic symbol min typ max unit toggle frequency (sine wave input) f t 0.1 1.4 1.1 ghz supply current (pin 2) i cc 1.0 2.0 ma modulus control input high (mc) v ih1 2.0 v cc + 0.5 v v modulus control input low (mc) v il1 gnd 0.8 v divide ratio control input high (sw) v ih2 v cc 0.5 v v cc v cc + 0.5 v vdc divide ratio control input low (sw) v il2 open open open output voltage swing (note 2) (c l = 8.0 pf, r l = 3.3 k w ) v out 0.8 1.1 v pp modulus setup time mc to out @ 1100 mhz t set 11 16 ns input voltage sensitivity 2501100 mhz 100250 mhz v in 100 400 1000 1000 mv pp output current (note 1) v cc = 2.7 v, c l = 8.0 pf, r l = 3.3 k w v cc = 5.0 v, c l = 8.0 pf, r l = 7.2 k w i o 0.5 0.5 3.0 3.0 ma notes: 1. divide ratio of 64/65 @ 1.1 ghz 2. valid over voltage range 2.7 to 5.5 v; r l = 3.3 k w @ v cc = 2.7 v; r l = 7.2 k w @ v cc = 5.0 v figure 1. logic diagram (mc12052a) a h g f e d in mc in sw out q s q c qb d q c qb d qb c q d c qb d qb c q d qb c q d b qb c q d c qb c q d m figure 2. modulus setup time modulus setup time mc to out is the mc setup or mc release plus the prop delay. prop. delay in out mc mc setup mc release figure 3. ac test circuit external components c1 = c2 = 1000 pf c3 = 0.1 m f c l = 8.0pf (including scope and jig capacitance) r l = 3.3 k w @ v cc = 2.7 v r l = 7.2 k w @ v cc = 5.0 v c l mc input c2 c1 c3 v cc = 2.7 to 5.5 v 50 w sine wave generator sw v cc out gnd mc in in r l
mc12052a mc12052a motorola wireless rf, if and transmitter device data 4.214 1200 1100 1000 900 800 700 600 500 400 300 200 100 0 100 200 300 100 200 300 400 500 600 700 800 900 1000 1100 1200 figure 4. typical input impedance versus input frequency mhz ohms jx r
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