Order this document by MC12038A/D The MC12038A 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 127/128 or 255/256 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 • • • • • • MECL PLL COMPONENTS ÷127/128, ÷255/256 DUAL MODULUS PRESCALER SEMICONDUCTOR TECHNICAL DATA Supply Voltage of 4.5 to 5.5 V Low–Power 4.8 mA Typical Operating Temperature Range of –40 to 85°C 8 Short Setup Time (tset) 16ns Maximum @ 1.1 GHz 1 Modulus Control Input Level Is Compatible With Standard CMOS and TTL On–Chip Output Termination D SUFFIX PLASTIC PACKAGE CASE 751 (SO–8) FUNCTIONAL TABLE SW MC Divide Ratio H H 127 H L 128 L H 255 L L 256 8 1 NOTES: 1. SW: H = VCC, 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 VCC, L = GND to 0.8 V. P SUFFIX PLASTIC PACKAGE CASE 626 DESIGN GUIDE Criteria Value Unit Internal Gate Count* 67 ea Internal Gate Propagation Delay 200 ps Internal Gate Power Dissipation 0.75 mW Speed Power Product 0.15 pJ NOTE: PIN CONNECTIONS IN VCC SW OUT * Equivalent to a two–input NAND gate MAXIMUM RATINGS Characteristic Symbol Range Unit VCC –0.5 to 7.0 Vdc TA –40 to 85 °C Storage Temperature Range Tstg –65 to 150 °C Modulus Control Input, Pin 6 MC –0.5 to 6.5 Vdc Power Supply Voltage, Pin 2 Operating Temperature Range NOTE: 1 8 2 7 3 6 4 5 IN NC MC Gnd (Top View) ESD data available upon request. ORDERING INFORMATION Device MC12038AD MC12038AP Operating Temperature Range TA = – 40° to +85°C Motorola, Inc. 1997 Package SO–8 Plastic Rev 2 MC12038A ELECTRICAL CHARACTERISTICS (VCC = 4.5 to 5.5V; TA = –40 to 85°C, unless otherwise noted.) Symbol Min Typ Max Unit ft 0.1 1.4 1.1 GHz Supply Current Output Unloaded (Pin 2) at 5.0 Vdc ICC – 4.8 6.5 mA Modulus Control Input High (MC) VIH1 2.0 – VCC V Characteristic Toggle Frequency (Sine Wave Input) Modulus Control Input Low (MC) VIL1 – – 0.8 V Divide Ratio Control Input High (SW) VIH2 VCC VCC VCC Vdc Divide Ratio Control Input Low (SW) VIL2 Open Open Open – Output Voltage Swing (CL = 8.0 pF) Vout 1.0 1.6 – Vpp Modulus Setup Time MC to Out tset – 11 16 ns Vin(min) 100 400 – – 1500 1500 mVpp Input Voltage Sensitivity 250–1100 MHz 100–250 MHz Figure 1. Logic Diagram (MC12038A) D Q D Q D B A Figure 2. Modulus Setup Time Q Prop. Delay C In QB C QB C QB C M In In Out MC MC Setup D Q D QB C D C QB D E Q D QB C F Q C QB D G H Q MC QB C S Q MC Release Out Modulus setup time MC to out is the MC setup or MC release plus the prop delay. SW Figure 3. Typical Output Waveforms 500 m ≈ 20 ns (÷128, 1.1 GHz Input Frequency, VCC = 5.0 V, TA = 25°C, Output Loaded) 2 MOTOROLA RF/IF DEVICE DATA MC12038A Figure 4. AC Test Circuit VCC = 4.5 to 5.5 Vdc C3 Sine Wave Generator C1 VCC SW IN 50Ω OUT C2 CL IN MC EXTERNAL COMPONENTS C1 = C2 = 1000 pF C3 = 0.1 µF CL = 8.0 pF (Including Scope and jig capacitance) GND MC Input +1250 +10.0 +710 +5.0 +400 0 +225 –5.0 +125 –10.0 +71.0 –15.0 +40.0 –20.0 +22.5 –25.0 +12.8 –30.0 +7.1 –35.0 +4.0 –40.0 +2.25 –45.0 +1.25 –50.0 250 0 500 750 1000 1250 mVrms AMPLITUDE (dBm) Figure 5. Input Signal Amplitude versus Input Frequency +15.0 +0.71 1500 FREQUENCY (MHz) Divide Ratio = 128; VCC = 5.0 V; TA = 25°C Figure 6. Output Amplitude versus Input Frequency 5000 3000 2000 mVpp 4000 1000 0 250 500 750 1000 1250 0 1500 FREQUENCY (MHz) MOTOROLA RF/IF DEVICE DATA 3 MC12038A Figure 7. Typical Input Impedance versus Input Frequency 200 150 R 100 MHz 50 0 –50 OHMS –100 –150 –200 –250 –300 –350 –400 –450 jX –500 –550 –600 –650 100 4 200 300 400 500 600 700 800 900 1000 1100 1200 MOTOROLA RF/IF DEVICE DATA MC12038A OUTLINE DIMENSIONS 8 P SUFFIX PLASTIC PACKAGE CASE 626–05 ISSUE K 5 –B– 1 NOTES: 1. DIMENSION L TO CENTER OF LEAD WHEN FORMED PARALLEL. 2. PACKAGE CONTOUR OPTIONAL (ROUND OR SQUARE CORNERS). 3. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 4 F –A– NOTE 2 L DIM A B C D F G H J K L M N C J –T– N SEATING PLANE D M K G H 0.13 (0.005) T A M B M 8 NOTES: 1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M, 1994. 2. DIMENSIONS ARE IN MILLIMETER. 3. DIMENSION D AND E DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 PER SIDE. 5. DIMENSION B DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.127 TOTAL IN EXCESS OF THE B DIMENSION AT MAXIMUM MATERIAL CONDITION. C 5 0.25 H E M B M 1 4 h B X 45 _ e q A C SEATING PLANE L 0.10 A1 B 0.25 M C B S A INCHES MIN MAX 0.370 0.400 0.240 0.260 0.155 0.175 0.015 0.020 0.040 0.070 0.100 BSC 0.030 0.050 0.008 0.012 0.115 0.135 0.300 BSC ––– 10_ 0.030 0.040 M D SUFFIX PLASTIC PACKAGE CASE 751–06 (SO–8) ISSUE T D A MILLIMETERS MIN MAX 9.40 10.16 6.10 6.60 3.94 4.45 0.38 0.51 1.02 1.78 2.54 BSC 0.76 1.27 0.20 0.30 2.92 3.43 7.62 BSC ––– 10_ 0.76 1.01 S DIM A A1 B C D E e H h L q MILLIMETERS MIN MAX 1.35 1.75 0.10 0.25 0.35 0.49 0.19 0.25 4.80 5.00 3.80 4.00 1.27 BSC 5.80 6.20 0.25 0.50 0.40 1.25 0_ 7_ Motorola reserves the right to make changes without further notice to any products herein. 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