MC74HC4046N Motorola, MC74HC4046N Datasheet

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... R2 Resistor R2 Connection 13 PC2 OUT Phase Comparator 2 Output 14 SIG IN Signal Input 15 PC3 OUT Phase Comparator 3 Output Positive Supply Voltage 10/95 Motorola, Inc. 1995 16 Name and Function 3–1 REV 6 MC74HC4046A N SUFFIX PLASTIC PACKAGE CASE 648– SUFFIX SOIC PACKAGE 16 CASE 751B–05 1 ORDERING INFORMATION ...

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... Plastic DIP: – from 125 _ C SOIC Package: – from 125 _ C For high frequency or heavy load considerations, see Chapter 2 of the Motorola High–Speed CMOS Data Book (DL129/D). Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î ...

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... Current (per Package) (VCO disabled) Pins 3, 5 and Pin 9 at GND; Input Leakage at Pins 3 and excluded NOTE: Information on typical parametric values can be found in Chapter 2 of the Motorola High–Speed CMOS Data Book (DL129/D). [Phase Comparator Section] AC ELECTRICAL CHARACTERISTICS Symbol Symbol Parameter ...

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... INH, VCO IN V VCO IN Operating Voltage Range at INH = V IL VCO IN over the range specified for R1; For linearity see Fig. 15A, Parallel value of R1 and R2 should be > 2 Resistor Range R2 C1 Capacitor Range MOTOROLA (Voltages Referenced to GND – Volts Volts Test Conditions Test Conditions 3 4.5 6 ...

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... MC74HC4046A Guaranteed Limit 85 C 125 C Max Min Max Min Max Unit Unit Unit %/K MHz See Figures 15A Typical 50% % Guaranteed Limit 85 C 125 C Unit Unit Unit Max Min Max Min Max 300 k 300 300 See Figure 12 mV Typical 25 MOTOROLA ...

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... PCP OUT , PC1 OUT 50% PC3 OUT OUTPUTS 10% t THL Figure 1. SIG IN 50% INPUT COMP IN 50% INPUT t PLZ t PZL 50% PC2 OUT OUTPUT 10% Figure 3. MOTOROLA SWITCHING WAVEFORMS SIG 50% INPUT GND COMP IN t PLH INPUT t PZH PC2 OUT 50% OUTPUT t TLH V CC GND V CC DEVICE UNDER ...

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... Op–amps (see Figure 5). This is useful if the internal VCO is not being used. A logic high on inhibit disables the VCO and all Op–amps, minimizing standby power consump- tion CURRENT MIRROR (EXTERNAL ref + + Figure 5. Logic Diagram for VCO 3–7 MC74HC4046A 4 VCO OUT MOTOROLA ...

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... In order to achieve lock when the PLL input frequency increases, the MOTOROLA COMP IN . The SIG IN and COMP IN have a special DC bias network that enables AC coupling of input signals. If the sig- nals are not AC coupled, standard 54HC/74HC input levels are required ...

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... SIG IN COMP IN PC2 OUT HIGH IMPEDANCE OFF–STATE VCO IN PCP OUT Figure 8. Typical Waveforms for PLL Using Phase Comparator 2 SIG IN COMP IN PC3 OUT VCO IN Figure 9. Typical Waveform for PLL Using Phase Comparator 3 3–9 MC74HC4046A V CC GND VCC GND MOTOROLA ...

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... 4 100 pF VCOIN = 1 –15 –100 – AMBIENT TEMPERATURE ( C) Figure 13B. Frequency Stability versus Ambient Temperature 4.5 V MOTOROLA V CC =3 =6 +1.0 V –4.0 1/2V CC – 500 mV Figure 11. Input Current at SIG IN , COMP IN with 500 mV at Self–Bias Point ...

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... Figure 15B. Definition of VCO Frequency Linearity 3–11 MC74HC4046A 0.1 F 1.0 1.5 2.0 2.5 3.0 3.5 V VCOIN ( 300 0.1 F 1.0 1.5 2.0 2.5 3.0 3.5 4.0 V VCOIN (V) MIN 1 MAX V = 0.5 V OVER THE V CC RANGE: FOR VCO LINEARITY LINEARITY = (f 0 – 100% MOTOROLA 4.0 4.5 ...

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... VCOIN = 1 FOR 4.5 V AND 6 VCOIN = 1 FOR 3.0 V; INH = GND; T amb = 4.5 V 3 4.5 V 3 4 (pF) Figure 20. Frequency Offset versus C1 MOTOROLA pF VCOIN = amb = Figure 17. Power Dissipation versus 6 3.0 V 6 ...

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... Figure 24. R2 versus Frequency Lock Range ( High–Speed CMOS Logic Data DL129 — Rev 8.0 6.0 4.0 2.0 0 –2 C1= 3–13 MC74HC4046A C1=39 pF R1=3 k R1=10 k R1=20 k R1=30 k R1=40 k R1=50 k R1=100 k R1=300 Figure 23. R2 versus f min R1=10 k R1=3.0 k R1=20 k R1=30 k R1=40 k R1=50 k R1=100 k R1=300 MOTOROLA ...

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... Determine R1–C1 from Figure 21. Calculate value of R1 from the value of C1 and the product of R1C1 from Figure 21. (see Figure 24 for characteristics of the VCO operation) MOTOROLA Phase Comparator Given f max and f0 Given f0 and fL Determine the Calculate f min value of R1 and f min = f0–fL ...

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... Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters can and do vary in different applications. All operating parameters, including “ ...